Canon Stealth Adds RF24-105mm F4 L IS USM Firmware 2.0.7

Weirdly enough. I don’t use the control ring at all. Not sure if it is because I had a lot of EF lenses to begin with or that the 3 wheels on the R5 already do what I need or that I can't access the ring underwater.
I imagine shooting underwater is a whole different thing, including the setup. I've never experienced it so far, but it sure would be a fun thing to try it one time.
 
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The 70-200 4L is an exception to that. Great performance throughout the range.
The 70-200mm F4 is a stunning lens! Sharp throughout the range, the nicest bokeh of any F4 zooms (probably due to the focal length), great handling and a near perfect balance of size and weight. Plus, imho the control ring is "in the right place" at the end of the lens. I don´t like where the control ring is placed with 70-200mm F2.8 (collapsible) lens. It makes reaching for it kind of awkward imo.

Especially between 70-105mm it performs better than the 24-105mm although I have the feeling the 70-200mm excels at the long end. I agree that the 24-105mm is fairly strong at the wide end.
 
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Indeed, this zoom has quickly become my second most used lens, after the 15-35 f/2,8.
By the way, my 24-105 f/2,8 had mushy corners at 24mm, and was a bit on the soft side at 105mm. Q.C. had seemingly failed...
Hehe, I have a familiar case: my two most used lenses are the RF 14-35mm F4 L and the 70-200mm F4. It is also a neat way to avoid the 24-105mm :) Currently, I´m taking a lot of family pics so I use the 50mm F1.4 and 85mm F2 a lot.
 
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Personally, I use the control ring for ISO.

I rarely need to change aperture, so having access to ISO with my left hand means I can change it without releasing the back focus and shutter buttons. That way, I can simultaneously perform autofocus, adjust exposure and keep shooting without changing shutter speed.

Shutter speed with my right index finger, autofocus with my right thumb, aperture is mostly a constant, and ISO with left thumb, pinky or index finger, depending on the lens.
 
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Hehe, I have a familiar case: my two most used lenses are the RF 14-35mm F4 L and the 70-200mm F4. It is also a neat way to avoid the 24-105mm :) Currently, I´m taking a lot of family pics so I use the 50mm F1.4 and 85mm F2 a lot.
The only lens I miss is a 50mm macro, but I don't believe it will ever come from Canon. The Zeiss I currently use disappoints at infinity, and the RF 50mm 1,4 or 1,2 don't focus close enough. The gap between 35mm and 70mm is a bit too wide...
 
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What function did you assign to the control ring?
As another Control Ring user, I wanted to chime in: I set it to Exposure Compensation, as usually I have auto ISO (still linked to back panel dial - aka Quick Control Dial 1 - if direct control is needed) it helps in making fast exposure corrections as a proper 4th dial.

With flash photography, I set it to Flash Exposure Compensation.

In both configurations, it only registers inputs while the shutter button is half pressed, to prevent unwanted changes.
 
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I imagine shooting underwater is a whole different thing, including the setup. I've never experienced it so far, but it sure would be a fun thing to try it one time.
Lensrentals offer some underwater housings via https://www.lensrentals.com/catalog_search?q=ikelite for rent but otherwise you need to buy it outright. Minimum you need for a DLSR/MILC is the body housing, the port extensions and zoom gear (for the zoom lens you want to use) and either a dome or flat port (macro) at the end.

For compact/fixed lens bodies then there are cheaper options as long as you are happy with the image quality/AF etc. I had different compacts for probably a decade until it got to the point that a new compact body plus housing was about the same cost as a housing for my main camera.

Pros/Cons: Much more expensive/larger/heavier housings needed for DLSR/MILC but can mix/match with different lenses.
Plus other bits like: vacuum pumps, trim weight/float system, handles/tray/arms, strobes, sync cords.

Hard to sell second hand if you upgrade although certain bits can be upgraded depending on the OEM placement of buttons and physical dimensions. Ikelite have a different "back" for the R5ii vs R5 housing for USD850 although the power switch needs to be on before closing it. A new housing is USD2000.
Ikelite are at the cheaper end of the spectrum. Aluminium housings start at about double the Ikelite cost and a Nauticam setup for a R5ii +RF14-35mm would be about USD10k (plus the camera/lens :) )
Nauticam do have a zoom gear that can use the control ring for the EF-R adapter but otherwise not.
 
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