whoopiepi
Posts: 6
Joined: Thu Jul 13, 2023 7:56 pm

HQ Cam Lens Help

Mon Feb 26, 2024 6:59 am

I just picked up a HQ Cam for my Pi 5 camera project I'm working on. I had seen a post a few years back from a user on the these forums, crackerjack, recommending the Kern Paillard 13mm f1.8 lens to someone for a scanner project ((viewtopic.php?t=314625). I've purchased one of these old KP 13mm f1.8 lenses and hooked it up to the HQ cam using a fotodiox d to c mount adapter and have been playing with it. However I only seem to be able to do extremely close focus, about an inch or less, so it functions only as a macro lens. Crackerjack's post mentions the lens focusing from 8" out to infinity so I'm not sure if I'm missing something?

Also, curious if people have other old (or new) funky lens suggestions for HQ camera for general photographic use, portraits, landscape, etc.

Thanks!

gordon77
Posts: 8146
Joined: Sun Aug 05, 2012 3:12 pm

Re: HQ Cam Lens Help

Mon Feb 26, 2024 9:45 am

Do you have any other adaptors on the camera eg the c mount to cs mount 5mm adaptor ?

whoopiepi
Posts: 6
Joined: Thu Jul 13, 2023 7:56 pm

Re: HQ Cam Lens Help

Mon Feb 26, 2024 5:55 pm

No other adapters, only this D to C mount:
https://www.amazon.com/dp/B00YCPOPD2?ps ... ct_details

6by9
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 16123
Joined: Wed Dec 04, 2013 11:27 am
Location: ZZ9 Plural Z Alpha, aka just outside Cambridge.

Re: HQ Cam Lens Help

Mon Feb 26, 2024 6:23 pm

The HQ camera is a CS mount - see https://www.raspberrypi.com/products/ra ... ty-camera/
Adding the 5mm extension converts it to a C mount.

https://en.wikipedia.org/wiki/C_mount#CS_mount

Your adapter lists itself as a C-mount to D-mount adapter, so normally you would need the 5mm extension to mount it onto the CS mount camera module.
However the description also says:
Compatible with D-mount 8mm film lenses on C-mount cameras (1.000 inch thread) such as Cine, CCTV / Machine Vision / Microscopes; No infinity focus, macro only
Removing the 5mm will make it longer sighted, so it's worth trying with and without it to note the effect.
Software Engineer at Raspberry Pi Ltd. Views expressed are still personal views.
I'm not interested in doing contracts for bespoke functionality - please don't ask.

gordon77
Posts: 8146
Joined: Sun Aug 05, 2012 3:12 pm

Re: HQ Cam Lens Help

Mon Feb 26, 2024 8:39 pm

whoopiepi wrote:
Mon Feb 26, 2024 5:55 pm
No other adapters, only this D to C mount:
https://www.amazon.com/dp/B00YCPOPD2?ps ... ct_details
Have you this fitted ? Coloured red to identify. If so remove it.
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