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polaris8030 · 07-31-2025

A recent issue with my camera has me stumped Body: R5 mk1 + EF adapter Issue seen with EF 16-35 F4L mk3, EF 24-70 f2.8L mk2 and 100-400 f4.5-5.6L mk2At the wider zoom end of these lenses I cannot get the camera to focus at distant objects. Only by in...

polaris8030 · 07-31-2023

I don't use my 600ex-rt mk2 very often and I have successfully used the st-e3-rt to remote control the 600ex in the past, but yesterday it would just not work. Setup: R5 + ST-E3-RT + 600ex-2- 600ex-rt works just fine directly off the R5 shoe- not rel...

polaris8030 · 08-05-2018

I have used the 5DSR + 600EXII setup without issue for about a year on numerous occasions. Last time I used this setup was about 2 weeks ago and noticed nothing unusual. This time around I am unable to use any of the camera buttons when the EX-II is ...

polaris8030 · 08-16-2025

got the R5 body back this week and also had to wait for a (new or factory refurbished, I cannot tell) adapter sent by Canon. Tested the camera today with the 16-35 2.8 over various zooms at the wide end, subjects near and far - and so far so good. Is...

polaris8030 · 08-09-2025

Yes, cleaned by Canon. Once a year, I send the 2x bodies (R5, 5DSR) + EF lenses for cleaning. Its a perk of the CPS membership, so even if there isn't dust per se on the lenses or the sensors, I send it. And I believe they also do a functional check ...

polaris8030 · 08-09-2025

I have zero RF lenses, all EF. Same reason - the EF lenses work beautifully, and I hope they continue to do so.Apparently the adapter got a clean bill of health, since I sent both body and adapter for repair.

polaris8030 · 08-09-2025

Like never. Only time I might have removed the adapter is to send the sensor for cleaning.I don't know what to make of this diagnosis. Trying to think what kind of forces can displace the flange back but not cause the rest of the body to be impacted....

polaris8030 · 08-08-2025

thought I'd give an update to this thread. Here is the diagnosis from Canon repair "A technician has evaluated your product and determined that the flange back is out of standard. Unit needs open repair to make adjustments and correct CMOS and mount ...

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R5 mk1 no longer focusing at infinity with EF lenses at wide end

Can't remote control flash w/ ST-E3-RT (ver 1)

Issue : Using 600EXII-RT with 5DSR is disabling all buttons on the body

Re: R5 mk1 no longer focusing at infinity with EF lenses at wide end

Re: R5 mk1 no longer focusing at infinity with EF lenses at wide end

Re: R5 mk1 no longer focusing at infinity with EF lenses at wide end

Re: R5 mk1 no longer focusing at infinity with EF lenses at wide end

Re: R5 mk1 no longer focusing at infinity with EF lenses at wide end