The RF 35 f/1.4L VCM aperture ring will work for photo work on Canon’s next generation cameras

bbasiaga said:

Why would one want to use it for still photos? You can already set the aperture in the camera. I guess it prevents it from going wide open for focus or the EVF view?

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Timelapse.

Every time you take a picture the camera is stopping down from wide open to your set aperature. That set aperture remains fixed, f8 for example, but one photo may be f8.001, f8.002, f/7.9, etc. It’s not perfectly repeatable. In most conditions this is a non issue, but when taking 1,000 photos for Timelapse, it introduces a bit of flicker from inconsistent exposure. People (use to) hold the DoF preview button while simultaneously half way twisting the lens off the mount so the electronics would disconnect locking the aperture at the set size. The only other options for canon was retro, or Cine lenses. Tools to remove this type of flicker have gotten better so I don’t see it discussed as much as it was in the DSLR days, but it’s a tedious process in post and not perfect either.

In theory, an aperture ring solves for this if it remains fixed at the set f stop between shots when focus is fixed. If canon still opens the lens to focus between shots we’ll still have the aperture flicker in Timelapse.

Also ramping exposure for sunset and sunrise Timelapse would be really nice with.a smooth ring.

I was really disappointed it didn't work on the 24-105 2.8 + R5C.

padam said:

On newer cameras like an R6 Mark II and R8 there is a choice (with native RF lenses): Camera -> Display simulation -> Exposure+DOF

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Exposure+DOD: OK, but still no focusing at closed diaphragm. Though this feature wouldn't matter much for Canon lenses, very rarely affected by focus shift.

koenkooi said:

Only the R6 and up have 3 dials, the R8 o
has 2 and some of the APS-C bodies only have one.

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I stand corrected!

Still, given what you say, maybe 3 knobs on all bodies would have been better than an extra knob on all lenses?

cayenne said:

I'm shooting a LOT of older manual lenses....I really like to have aperture settable on the lens....old style.

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Ditto, I also like setting aperture on the lens. I have my R6 mk ii set up to adjust aperture on the control ring for RF lenses.

Del Paso said:

Exposure+DOD: OK, but still no focusing at closed diaphragm. Though this feature wouldn't matter much for Canon lenses, very rarely affected by focus shift.

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In one-shot AF mode, it does focus at closed diaphragm in this mode, if the object is bright enough. In tracking AF or single-shot with darker subjects it automatically opens up the aperture to help.