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johnrmoyer · 06-17-2022

When using a manual only lens with no electronics, DPP does not permit one to do diffraction correction. I would guess that the only information about the lens that is needed to do a Richardson/Lucy deconvolution to correct diffraction is the F numbe...

johnrmoyer · 04-20-2022

EOS R5 focus puzzleThese three images were hand held, Canon EF 100-400mm f/4.5-5.6L IS II USM + 1.4x".The focus box displayed in the viewfinder and in DPP does not match the actual focus.I have included 3 screen captures from DPP.The camera focused o...

johnrmoyer · 04-06-2022

HelloOn a windy day when multiple things are moving in different directions, it seems to me that the IBIS might get confused on the EOS R5. Even though the auto focus locks onto the eye of the bird, the image ends up soft. It appears that the bird is...

johnrmoyer · 02-18-2022

I hope this might be useful information for someoneI updated the firmware on my EOS R5 from 1.5.0 to 1.5.1. I used the Canon EOS Utility on an iMac to do it.After the update, it did not recognize the lens attached to the camera until I turned if off ...

johnrmoyer · 06-26-2021

Young buck was at the bird feeder at my house in Norman, Oklahoma, United States just before sunset. That makes good lighting with the sun on his face and shadow behind. Since the camera is able to see less into shadow than a human eye, de-emphasizin...

johnrmoyer · 09-27-2022

Just speculating. If the 17-40 works in Tv but not in Av, then maybe the camera is not able to change the aperture on the lens. This might be an easier test.

johnrmoyer · 09-25-2022

The lens I use most often by far is EF100-400mm f/4.5-5.6L IS II USM often with 1.4x III or 2x III extender. So this might be my favorite. But I also have other favorites.Zinnia with American Bumble Bee (Bombus pensylvanicus) in Norman, Oklahoma, Sep...

johnrmoyer · 09-04-2022

Here is an example:https://www.rsok.com/~jrm/2021Sep08_birds_and_cats/2021sep02_bumblebee_IMG_3837c.htmlA Bumble Bee (Bombus pensylvanicus) was on a Zinnia in Norman, Oklahoma, United States on September 2, 2021. I made this photo with a very old len...

johnrmoyer · 09-04-2022

Canon says of the EOS R10 "Subject tracking handed down from the R3 with people, animal, and vehicle detection" which seems to me valuable for photographing active people.High Image Quality 24.2 megapixels APS-C sized CMOS sensor.DIGIC X Image Proces...

johnrmoyer · 09-04-2022

The adapter would work for continuing to use the EF-S 55-250mm lens with the EOS R10. I have used my ancient EF-S 55-250 on my EOS R5 and it works much better than it did on my Rebel T1i. I am not convinced that the RF24-240 would actually be enough ...

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DPP software feature request

EOS R5 focus puzzle

EOS R5 windy day IBIS

EOS R5 firmware update

White-tailed Deer (Odocoileus virginianus), June 25, 2021

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