01-16-2023 01:36 PM
I have a Canon 5dS, and am trying to get it working with a M42 to EF adapter that includes the Focus confirm chip. The camera appears to be able to see the chip - it shows 50mm and f1.4 when I'm using it, as expected, but when I trigger the shutter, I get a 00 error, saying there's a problem communicating with the lens, clean the contacts, etc. My understanding is that I need to toggle the "Release Shutter without Lens" option in settings, but I've so far been unable to find it. I have other Canon cameras, notably an EOS M6, and found the option and have been successful using the adapter, and the adapter worked on my Canon 5dII just fine. Does the option exist on the 5dS? Am up to date on firmware, camera works fine with other lenses including Manual Focus Zeiss ZE's.
01-16-2023 02:33 PM - edited 01-16-2023 02:34 PM
While I have set "Release Shutter Without Lens" on my Canon mirrorless camera (M5), I have never done so on any of the various Canon DSLRs I've been using for nearly 20 years. And, yes, I have used several adapted lenses on them without any problem. I've used both "chipped" and plain adapters over the years.
This website is pretty old now, but has been a pretty good resource for adapted lenses. Maybe it will help you.
I am not sure why you are getting that error, but a few possibilities come to mind.
I hope this helps, but have to admit I'm doing a lot of guessing!
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"Walk softly and carry a big lens."
GEAR: 5DII, 7DII (x2), 7D(x2), EOS M5, some other cameras, various lenses & accessories
01-16-2023 02:44 PM
I think its possible that the chip has incompatibilities with the 5dS - the one I'm trying currently (I have multiple, of them, actually) is, I believe, an older "v2" chip from Fotodiox - they're up to a v10, it looks like. Their documentation is... sketchy, to be honest. I do also have other adapters with and without chips, and get the same error. Since it was happening with multiple adapters, I was wondering about Camera settings. I will say that normal Canon EF lenses of various ages seem to work fine, so I believe the camera and contacts are all good. I'll see about going through some of the settings you suggested and see if any help. I have (mostly) been using "M" for the most control possible.
Still would like to know from others who have 5Ds or from Canon (if they're listening) whether then "shutter release without lens" is an option and I just didn't find it, or if it isn't available on the 5Ds???
01-16-2023 03:04 PM
No Canon DSLR or SLR camera has ever had "Release Shutter Without Lens" custom function. This custom function is specific to EOS M and EOS R series cameras.
Current Gear: EOS 5D Mark IV, EF 16-35mm F/2.8L III USM, EF 24-70mm F/2.8L II USM, EF 50 F/1.8 STM, EF 85mm F/1.8 USM, EF 70-200mm F/2.8L IS III USM, 430EX III-RT, 470EX-AI & 600EX II-RT
Retired Gear: EOS 40D, Sigma 17-50mm F/2.8 EX DC OS HSM & EF 28-135mm F/3.5-5.6 IS USM
01-16-2023 04:33 PM
Canon DSLRs do not include a menu option to release the shutter without a lens attached. Make sure you are using a shooting mode that does not require the camera to set the Av in the attached lens.
The camera cannot automatically set an aperture value with a fully manual lens. Use Av or M shooting modes. If you are still getting the error, then your mount adapter is faulty.
01-16-2023 11:03 PM - edited 01-17-2023 07:34 AM
Your adapter isn’t faulty, it’s just not compatible with the 5Ds. I have experienced the same thing with older chipped adapters on my 5D Mk III. They work fine on older, simpler cameras, but cause errors on more complex cameras like the 5D Mk III or 5Ds.
If it were me, I would remove the AF confirm chip, as I never found them very accurate. A non-chipped adapter will not give an error. If you are having problems with a non-chipped adapter, the mirror is probably hitting the back of the lens at certain focus distances.
If you really need AF confirm, I would get another adapter with a more modern, up to date chip, that is compatible.
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