napajedlaci.cz
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Re: Raspberry Pi High Quality Camera

Tue May 05, 2020 7:44 pm

Time exposure is only 10.2, but raspberrypi.org writes about up to 200 seconds. So how do I take a photo with a time of up to 200 seconds via raspistill? :?

spidermanman
Posts: 1
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Re: Raspberry Pi High Quality Camera

Tue May 05, 2020 9:24 pm

Is anyone else having issues using Picamera with the new HQ camera? Mine times out when I take still captures.

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HermannSW
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Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 12:37 pm

My HQ camera was delivered today, and I really wanted to test it.
I have not bought a new lens yet, because I wanted to try with the CS mount lense I already own, from a v1 clone:
viewtopic.php?f=43&t=266916&p=1638585#p1638585

It turned out that this lens cannot be screwed in deep enough to give any reasonable picture.
But I found a way, small piece of paper with slightly <2mm height digits, directly on camera lens ;-)
(16MP photo with smartphone camera)
Image


Seems that I will have to order one of the official lenses now -- anyway, this is my first 12MP HQ camera photo:
Image
https://hermann-sw.github.io/planar_graph_playground
https://stamm-wilbrandt.de/en#raspcatbt
https://github.com/Hermann-SW/memrun
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/en/Raspberry_camera.html

ethanol100
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Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 12:52 pm

Did you remove the cs-to-c adapter from the camera?

PiGraham
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Location: Waterlooville

Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 1:05 pm

ethanol100 wrote:
Wed May 06, 2020 12:52 pm
Did you remove the cs-to-c adapter from the camera?
That was my thought. It looks like the 5mm extension ring is still fitted and the lens is probably a CS mount that does not use the adaptor.

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HermannSW
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Location: Eberbach, Germany

Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 1:13 pm

ethanol100 wrote:
Wed May 06, 2020 12:52 pm
Did you remove the cs-to-c adapter from the camera?
THANK you!
I did not, because I thought that the lens would not fit without.
The lens did fit perfectly without the adapter, below you can see 1st 12MP selfie of my HQ camera.

Btw, the first setup is quite a good microscope already.
I measured length from left of digit "4" to right of digit "2" as 5mm.
And gimp told me that same distance is 2670px long, that is 1.9µm/px(!):

Code: Select all

$ echo "5000/2670" | bc -ql
1.87265917602996254681
$

I would have expected a different photo, according HQ doc it says horizontal FoV depends on lens.
And product description from the v1 camera with CS lens says "Diagonal: 65 degrees":
https://www.aliexpress.com/item/4000324286262.html
Anyway, no need yet to buy a new lense immediately:
Image


P.S:
In the previous posting photo you can see scratches in lens (outside of area with paper).
In this posting photo these (minimal) scratches cannot be seen at all.
I know it is on lens glass, because the scratches move radially when changing focus.
https://hermann-sw.github.io/planar_graph_playground
https://stamm-wilbrandt.de/en#raspcatbt
https://github.com/Hermann-SW/memrun
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/en/Raspberry_camera.html

PiGraham
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Location: Waterlooville

Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 1:46 pm

HermannSW wrote:
Wed May 06, 2020 1:13 pm

I would have expected a different photo, according HQ doc it says horizontal FoV depends on lens.
And product description from the v1 camera with CS lens says "Diagonal: 65 degrees":
https://www.aliexpress.com/item/4000324286262.html
Anyway, no need yet to buy a new lense immediately:
Image
the FOV as an angle depends on both focal length of the len and the size of the sensor.
V1 camera has a much smaller sensor so you have different focal length and different sensor size resulting is different FOV.

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HermannSW
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Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 4:10 pm

Thanks for the explanation.
I just turned camera horizontal and took photo through 4m room and then window.
Image was just white in the window.
So I reduced shutter time to 1000µs and got a nice image.
Then I went down to 100, 10 and 1 -- no changes between those three, but much darker than 1000.
Minimal exposure time shown by "eog" image viewer was 1/8772 seconds, corresponding to 114µs shutter time.
I did capture with all shutter times between 114µs and 150µs, these are the exposures reported (corresponding to 129µs/144µs):

Code: Select all

-128: 1/8772
-143: 1/7752
-150: 1/6944
https://hermann-sw.github.io/planar_graph_playground
https://stamm-wilbrandt.de/en#raspcatbt
https://github.com/Hermann-SW/memrun
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/en/Raspberry_camera.html

jnd
Posts: 18
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Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 6:05 pm

I never had C-mount lens or camera but I'm enthusiast photographer so I was excited to order when I first saw the anouncement. I have made some initial test of the two lenses, going through different aperture settings at extreme focus settings of infinity and couple cm closeup:

6mm lens test
https://photos.app.goo.gl/kPWuSLADHUGkCKMZA
6mm lens test 2
https://photos.app.goo.gl/5n8PWe1zHrHbQbAB6
6mm lens closeup test
https://photos.app.goo.gl/YmnxfS1to9yo2SaG6
16mm lens test
https://photos.app.goo.gl/2PEMRctwUW8y1nNf7
16mm lens test 2
https://photos.app.goo.gl/6n7vEr9kw78GUpPM9
16mm lens closeup test, focus shifts somewhat when stopping down (fixed link)
https://photos.app.goo.gl/TztBo6ZQog1Yx2i68
Closeup tests aren't great as they had bright window in background which downgraded the contrast somewhat but you can see the real world results.

Summary of my impressions so far:
  • The sensor is really good and lenses are the main limitation, you will need to apply basic photography knowledge to get the best out of them. Default raspistill output looks a bit oversharpened for my taste but this can be changed.
  • The basic CS mount doesn't have standard flange distance, nor the C-mount adapter, see other thread.
  • 6mm lens looks and feel worse, it is cheaper anyway: it has significant barrel distortion coming short of fisheye, there are no aperture marks, aperture has only three blades (can matter for out of focus background rendering), when focusing the ring itself doesn't move but the rest of lens body does.
  • 6mm lens doesn't have any close focus limit so you can probably unscrew it in two pieces if you go too far. Shouldn't be needed with proper settings, it will focus close to the front element. Interestingly it also doesn't have limit for closing down aperture, it simply closes shut at the end.
  • 6mm lens performance is good in the center, outside you need to stop down heavily for sharp image. When stopped down a lot it is susceptible to flare, losing contrast and having bright spot across the frame. Some (3D printed) hood is definitely recommended.
  • 16mm lens is nicer, it has marked aperture position although I suspect the 8 and 16 aren't correct, 8 seems more like 11 and 16 is farther too when I check the shutter speed drop. Focusing angle is short but smooth so should be enough to focus correctly if you are careful.
  • 16mm lens wide open is again sharp in the center but contrast is suffering and chromatic aberration on contrasting edges is strong, that's normal performance for old style manual lenses. Sharpness doesn't fall away so fast like with 6mm lens. For sharpness across the frame you need to stop down around f/5.6. It has little visible distortion which is nice. Again, (3D printed) hood is recommended for better performance.
  • When imaging subjects close to the camera the depth of field is quite small and quality degrades too. You need to stop down couple stops but not too much as you will hit diffraction limit and lose detail again. That's true for any photographic lens.
  • In general you have to decide you priorities: For low light indoors keep it open and put subject in the middle of frame, stop down one stop for most improvement. For closeups invest in bright light at stop down more. If you have enough light then stop down to f/4 to f/5.6 (have to guess it for the 6mm) for optimal sharpness before diffraction kicks in. Don't use f/8 and higher if possible.
  • If you want better performance and let the sensor really shine invest in higher quality lens or adapt fast lens for slightly larger format. With that you will capture the good center image without blurry borders. With full size SLR lenses you will only get large focal lengths and receive zoomed in view.
  • Use magnified view to focus precisely, I like to run raspistill -t 0 -roi 0.4,0.4,0.2,0.2 -vf -hf
All in all it's a nice tool to play with for the price. I'd like to package it together with model 3A+, the official display, and have fun with this open source camera :)
Last edited by jnd on Wed May 06, 2020 6:43 pm, edited 1 time in total.

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HermannSW
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Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 6:14 pm

Today I received black metal (11$) C/CS to M12 mount adapter as well, which I bought because I own several M12 lenses.

I played with the M12 mount and the 70mm lens I used before to capture house of friend 1.73km distant:
viewtopic.php?p=1550239#p1550469

This time I took pictures of Ohrsbergturm, a small tower on a small hill on other side of river Neckar, 2.30km distant.
This was the capturing setup, that allowed to see live whether lens position got better or worse on 7" display with this command:

Code: Select all

raspivid -p 0,0,1014,760 -t 0
Image


The setup is located in 1st floor bathroom in our house:
home.start.png
home.start.png
home.start.png (241.49 KiB) Viewed 6650 times

Ohrsbergturm is 2.30km distant:
Ohrsbergturm.end.png
Ohrsbergturm.end.png
Ohrsbergturm.end.png (241.69 KiB) Viewed 6650 times

I copied out 1:1 just the Ohrsbergturm from full 12MP photo, impressive details for 2.3km distant:
Ohrsbergturm.detail.png
Ohrsbergturm.detail.png
Ohrsbergturm.detail.png (156.85 KiB) Viewed 6650 times

This is complete 12MP photo, the trees at border to sky are even 4km distant:
Image
https://hermann-sw.github.io/planar_graph_playground
https://stamm-wilbrandt.de/en#raspcatbt
https://github.com/Hermann-SW/memrun
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/en/Raspberry_camera.html

jamesh
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Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 6:26 pm

jnd wrote:
Wed May 06, 2020 6:05 pm
I never had C-mount lens or camera but I'm enthusiast photographer so I was excited to order when I first saw the anouncement. I have made some initial test of the two lenses, going through different aperture settings at extreme focus settings of infinity and couple cm closeup:

6mm lens test
https://photos.app.goo.gl/kPWuSLADHUGkCKMZA
6mm lens test 2
https://photos.app.goo.gl/5n8PWe1zHrHbQbAB6
6mm lens closeup test
https://photos.app.goo.gl/YmnxfS1to9yo2SaG6
16mm lens test
https://photos.app.goo.gl/2PEMRctwUW8y1nNf7
16mm lens test 2
https://photos.app.goo.gl/6n7vEr9kw78GUpPM9
16mm lens closeup test
https://photos.app.goo.gl/YmnxfS1to9yo2SaG6
Closeup tests aren't great as they had bright window in background which downgraded the contrast somewhat but you can see the real world results.

Summary of my impressions so far:
  • The sensor is really good and lenses are the main limitation, you will need to apply basic photography knowledge to get the best out of them. Default raspistill output looks a bit oversharpened for my taste but this can be changed.
  • The basic CS mount doesn't have standard flange distance, nor the C-mount adapter, see other thread.
  • 6mm lens looks and feel worse, it is cheaper anyway: it has significant barrel distortion coming short of fisheye, there are no aperture marks, aperture has only three blades (can matter for out of focus background rendering), when focusing the ring itself doesn't move but the rest of lens body does.
  • 6mm lens doesn't have any close focus limit so you can probably unscrew it in two pieces if you go too far. Shouldn't be needed with proper settings, it will focus close to the front element. Interestingly it also doesn't have limit for closing down aperture, it simply closes shut at the end.
  • 6mm lens performance is good in the center, outside you need to stop down heavily for sharp image. When stopped down a lot it is susceptible to flare, losing contrast and having bright spot across the frame. Some (3D printed) hood is definitely recommended.
  • 16mm lens is nicer, it has marked aperture position although I suspect the 8 and 16 aren't correct, 8 seems more like 11 and 16 is farther too when I check the shutter speed drop. Focusing angle is short but smooth so should be enough to focus correctly if you are careful.
  • 16mm lens wide open is again sharp in the center but contrast is suffering and chromatic aberration on contrasting edges is strong, that's normal performance for old style manual lenses. Sharpness doesn't fall away so fast like with 6mm lens. For sharpness across the frame you need to stop down around f/5.6. It has little visible distortion which is nice. Again, (3D printed) hood is recommended for better performance.
  • When imaging subjects close to the camera the depth of field is quite small and quality degrades too. You need to stop down couple stops but not too much as you will hit diffraction limit and lose detail again. That's true for any photographic lens.
  • In general you have to decide you priorities: For low light indoors keep it open and put subject in the middle of frame, stop down one stop for most improvement. For closeups invest in bright light at stop down more. If you have enough light then stop down to f/4 to f/5.6 (have to guess it for the 6mm) for optimal sharpness before diffraction kicks in. Don't use f/8 and higher if possible.
  • If you want better performance and let the sensor really shine invest in higher quality lens or adapt fast lens for slightly larger format. With that you will capture the good center image without blurry borders. With full size SLR lenses you will only get large focal lengths and receive zoomed in view.
  • Use magnified view to focus precisely, I like to run raspistill -t 0 -roi 0.4,0.4,0.2,0.2 -vf -hf
All in all it's a nice tool to play with for the price. I'd like to package it together with model 3A+, the official display, and have fun with this open source camera :)
Worth noting that these lenses are very much at the cheaper end of the market, so don't expect miracles! You can get MUCH more expensive ones!
Principal Software Engineer at Raspberry Pi Ltd.
Working in the Applications Team.

jnd
Posts: 18
Joined: Thu Aug 02, 2012 12:32 am

Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 6:39 pm

jamesh wrote:
Wed May 06, 2020 6:26 pm
Worth noting that these lenses are very much at the cheaper end of the market, so don't expect miracles! You can get MUCH more expensive ones!
Sure. I didn't know what to expect because I never bought C-mount lenses before. Perhaps that smaller format has good performing cheaper lenses and the lens on v2 camera is pretty good across the frame. I just wanted to make honest review so people know what they can expect. It's the same like in larger sensor photography. Cheap or old film camera lenses are poor wide open by modern standards (blame the high resolution sensors! :) ) but stop them down 3 or 4 stops and you will get similar very good results. You will lose couple stops of light however. There's a tradeoff like usually in engineering, it opens up challenges for creativity. Same with Raspberry Pi boards. Doesn't mean they're bad products.

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jbeale
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Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 6:46 pm

I'm curious what available lenses are at least approximately matched to this sensor (so-called 1/2.3 inch format; 7.9 mm image circle, and delivering 4k or 12 Mpixel resolution), particularly in the normal to short-telephoto range of viewing angles, either in the consumer or industrial market.

If you search for "4k 1/2.3 lens" you find a number of M12 thread lenses sold for GoPro cameras which could be used on PiCam-HQ with M12-CS adaptor. These are often wide-angle with f = 3.4 mm to 4.35 mm. There's some fisheye 220 degree FOV f=1.2 lenses. I found one f=7.2mm (HFOV=47 deg.) f/2.5 lens around $70. https://www.aliexpress.com/item/32909828108.html

There don't seem to be many longer focal length lenses made for this format that claim 4k or 12MP resolution. There is for example a f=12mm lens claiming 10MP on 1/1.8 inch sensor. https://4klens.co/collections/flat-lens ... gopro-lens
The lenses that deliver a given resolution for larger image formats like 1/1.8" would not achieve that resolution when the image circle is cropped down to the 1/2.3" format.

I have tried some full-frame Nikkor lenses with adaptor, and a moderately pricey Theia CS-mount 9-40mm tele which is ok, but I have not yet seen what I presume the sensor should be capable of. Photos: https://photos.app.goo.gl/nRtHb8SZJcTgYJ5v9

jamesh
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Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 7:50 pm

jbeale wrote:
Wed May 06, 2020 6:46 pm
I'm curious what available lenses are at least approximately matched to this sensor (so-called 1/2.3 inch format; 7.9 mm image circle, and delivering 4k or 12 Mpixel resolution), particularly in the normal to short-telephoto range of viewing angles, either in the consumer or industrial market.

If you search for "4k 1/2.3 lens" you find a number of M12 thread lenses sold for GoPro cameras which could be used on PiCam-HQ with M12-CS adaptor. These are often wide-angle with f = 3.4 mm to 4.35 mm. There's some fisheye 220 degree FOV f=1.2 lenses. I found one f=7.2mm (HFOV=47 deg.) f/2.5 lens around $70. https://www.aliexpress.com/item/32909828108.html

There don't seem to be many longer focal length lenses made for this format that claim 4k or 12MP resolution. There is for example a f=12mm lens claiming 10MP on 1/1.8 inch sensor. https://4klens.co/collections/flat-lens ... gopro-lens
The lenses that deliver a given resolution for larger image formats like 1/1.8" would not achieve that resolution when the image circle is cropped down to the 1/2.3" format.

I have tried some full-frame Nikkor lenses with adaptor, and a moderately pricey Theia CS-mount 9-40mm tele which is ok, but I have not yet seen what I presume the sensor should be capable of. Photos: https://photos.app.goo.gl/nRtHb8SZJcTgYJ5v9
Check out Tamron. Although you'll be paying $300 and much more. Which is a lot.
Principal Software Engineer at Raspberry Pi Ltd.
Working in the Applications Team.

ethanol100
Posts: 667
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Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 9:23 pm

I searched the normal lens supplier like Kowa, Tamron, Fujinon and Ricoh. I have not found a single c-mount lens which would have a high enough resolution for a 1.55um pixel size (or about 220 lp/mm). The highest supported solution I found was for 2um pixels. Even the lenses which say 4k, 12MPix or even 23Mpix are not build for such small sensors and tiny pixels.

Are there any recommendations for high quality lenses?

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jbeale
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Re: Raspberry Pi High Quality Camera

Wed May 06, 2020 10:03 pm

If you believe the vendor's claim, M12 lenses such as this 4.35mm f/2.8 for the 1/2.3" format https://www.back-bone.ca/product/4-35mm-16mp/ are good enough for the Pi-HQ camera's sensor, for around $100. It seems most of the market for such lenses is in extreme sports "action cams" and drones, both of which generally use wide angle lenses. Apparently the feasible lens designs become different as you go longer, and I have not seen anything with comparable resolving power in longer focal lengths.

billw
Posts: 421
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Re: Raspberry Pi High Quality Camera

Thu May 07, 2020 1:53 am

I found this lens interesting and largely because of the $28 price I've ordered one to try. It's slow delivery so I won't be able to see results for a while:

https://www.amazon.com/angxi-F1-2-Inte ... 47&sr=8-4

The title description says: 8mm F1.2 CCTV Lens, 23MP HD F1.2 1/2.5 CS Interface Security Camera Lens

But from the part description and image it is more likely 12MP and 1/1.7 format. Assuming that, it should at least be very good 1080p video and at least reasonably good max still resolution quality for the price.

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jbeale
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Re: Raspberry Pi High Quality Camera

Thu May 07, 2020 5:55 am

Interesting! I've found you very seldom get more than you pay for in lens quality, but I'll be interested to hear what you think of it. I don't see an adjustable iris, so if it's a fixed f/1.2 aperture that should be good in low light, but at 8mm it will also have a quite shallow depth of field. Even with my adjustable-iris lenses, I'm finding the high resolution of the sensor (esp. with longer focal lengths) make the depth of field issues that much more apparent.

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HermannSW
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Re: Raspberry Pi High Quality Camera

Thu May 07, 2020 8:18 am

billw wrote:
Thu May 07, 2020 1:53 am
I found this lens interesting and largely because of the $28 price I've ordered one to try. It's slow delivery so I won't be able to see results for a while:

https://www.amazon.com/angxi-F1-2-Inte ... 47&sr=8-4

The title description says: 8mm F1.2 CCTV Lens, 23MP HD F1.2 1/2.5 CS Interface Security Camera Lens

But from the part description and image it is more likely 12MP and 1/1.7 format. Assuming that, it should at least be very good 1080p video and at least reasonably good max still resolution quality for the price.
I did a lot in the past with Raspberry cameras, but I am a newbie wrt lenses.
I even forgot to screw out CS2C adapter ring from my HQ camera initially, learned from ethanol100 about that.
On the weekend, before having received my HQ camera, I wondered why both lenses promoted with HQ camera only have 3MP resolution?
I searched on aliexpress.com and found this 18$ 12MP lens and ordered it, mainly because of the small FoV (I don't like wide angle). I cannot even tell which of the three columns for Field Angle applies to that lens with HQ camera ...
https://www.aliexpress.com/item/4000189825422.html
12MP.lens.png
12MP.lens.png
12MP.lens.png (139.56 KiB) Viewed 6425 times
https://hermann-sw.github.io/planar_graph_playground
https://stamm-wilbrandt.de/en#raspcatbt
https://github.com/Hermann-SW/memrun
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/en/Raspberry_camera.html

aBUGSworstnightmare
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Re: Raspberry Pi High Quality Camera

Thu May 07, 2020 9:30 am

HermannSW wrote: I cannot even tell which of the three columns for Field Angle applies to that lens with HQ camera ...
Maybe none, as diagonal size of 7.857mm is 1/2.3 for IMX477

6by9
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Re: Raspberry Pi High Quality Camera

Thu May 07, 2020 9:57 am

HermannSW wrote:
Thu May 07, 2020 8:18 am
On the weekend, before having received my HQ camera, I wondered why both lenses promoted with HQ camera only have 3MP resolution?
They don't. The 6mm is 3MP, the 16mm is 10MP.

https://www.raspberrypi.org/blog/new-pr ... nt-1527959 as to why. You do get what you pay for on optics, and genuine lenses with >=12MPix resolution get very pricey.
Software Engineer at Raspberry Pi Trading. Views expressed are still personal views.
I'm not interested in doing contracts for bespoke functionality - please don't ask.

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HermannSW
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Location: Eberbach, Germany

Re: Raspberry Pi High Quality Camera

Thu May 07, 2020 10:30 am

aBUGSworstnightmare wrote:
Thu May 07, 2020 9:30 am
Maybe none, as diagonal size of 7.857mm is 1/2.3 for IMX477
Cool, that would mean only slightly higher Field Angle than in middle column.
6by9 wrote:
Thu May 07, 2020 9:57 am
... the 16mm is 10MP.

https://www.raspberrypi.org/blog/new-pr ... nt-1527959 as to why. You do get what you pay for on optics, and genuine lenses with >=12MPix resolution get very pricey.
Thanks, so either the lens I bought and posted details is fake 12MP, or with 18$ exception to "very pricey" ...
https://hermann-sw.github.io/planar_graph_playground
https://stamm-wilbrandt.de/en#raspcatbt
https://github.com/Hermann-SW/memrun
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/en/Raspberry_camera.html

PiGraham
Posts: 5013
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Location: Waterlooville

Re: Raspberry Pi High Quality Camera

Thu May 07, 2020 10:39 am

HermannSW wrote:
Thu May 07, 2020 10:30 am
Thanks, so either the lens I bought and posted details is fake 12MP, or with 18$ exception to "very pricey" ...
I think you should be sceptical. Do they provide MTF data showing the lens can resolve that level of detail?
If it's just "12MP" marked on the front of the lens that probably doesn't mean much.
It's probably as real as those super cheap LED projectors that claim "FULL HD" but n the small print say "480 x 320 pixels"

Still, at the price, it might be worth a try. If it really is 12MP it would be quite a find.

6by9
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Re: Raspberry Pi High Quality Camera

Thu May 07, 2020 11:11 am

PiGraham wrote:
Thu May 07, 2020 10:39 am
HermannSW wrote:
Thu May 07, 2020 10:30 am
Thanks, so either the lens I bought and posted details is fake 12MP, or with 18$ exception to "very pricey" ...
I think you should be sceptical. Do they provide MTF data showing the lens can resolve that level of detail?
If it's just "12MP" marked on the front of the lens that probably doesn't mean much.
It's probably as real as those super cheap LED projectors that claim "FULL HD" but n the small print say "480 x 320 pixels"

Still, at the price, it might be worth a try. If it really is 12MP it would be quite a find.
That's a fair summary.

12MPix is starting to get up into the the DSLR type resolution, although on a smaller form factor. What price point do you expect to pay for a Canon or Nikon lens? Do you find cheap DSLR lenses that anyone actually rates on image quality?
With the IMX477 sensor size being smaller, you need slightly better optics to resolve the same detail on the same resolution DSLR sensor.

As with so many things in life, it's a matter of trading off requirements vs price.
Software Engineer at Raspberry Pi Trading. Views expressed are still personal views.
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aBUGSworstnightmare
Posts: 4871
Joined: Tue Jun 30, 2015 1:35 pm

Re: Raspberry Pi High Quality Camera

Thu May 07, 2020 11:43 am

HermannSW wrote:
Thu May 07, 2020 10:30 am
Thanks, so either the lens I bought and posted details is fake 12MP, or with 18$ exception to "very pricey" ...
I wouldn't expect it's real 12MP at this price point.Putting a laser marking on something (or a print) which 'shows' higher spec is a big bargain.

I've got my HQ today and already tested it with a 1/2.5" 8mm lens 3MP; image looks quite good. Anyhow I will play around with adjusting focal lenght and see what's the impact.

Later I want to make some comparison shots on my microcscope lens to see what's the difference between the OV5647 (that third party camera came with CS mount btw.) and the IMX477 with that lens (without altering any settings on the lens!).
Changing focal lenght might be more beneficial on this setup, let's see.

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