Here is the Canon RF 100mm f/2.8L IS USM Macro

Nemorino

EOS R
Aug 29, 2020
137
164
I have been going back and forth on the Laowa 100mm F2.8 2:1 Ultra Macro APO myself, and can't decide..
I am very happy with my Laowa which is great for flowers or mushrooms, but as mentioned moving subjects are a challange! The manual aperture is in bad light conditions also a problem and afaik only the Laowa EF 100 has electronic aperture.
of flying bees
In fact I had bee-flies aka Bombyliidae im mind like this one:
https://www.canonrumors.com/forum/threads/butterflies-moths-and-assorted-insects.31073/post-869000
Shot with the Sigma 105 Macro and tubes.;)
 

Mt Spokane Photography

I post too Much on Here!!
CR Pro
Mar 25, 2011
16,618
1,577
All RF lenses are focus by wire? Can anyone advise whether they are fiddly like the Sigma 70mm Art?
So far they are. The setting is in the body, not the lens.
20210411_073519.jpg
 

Normalnorm

EOS RP
Dec 25, 2012
713
345
It's not quite a ring, but a few solid stops. I can imagine if this is focus bracketing, every step is a defined amount different backwards or forward from the focused point. That would let you make your focus brackets in specific amounts, and if it's electronic, you could probably define how far of focus every step is.
Fiddling with a ring seems to be a way to maximize camera movement in a process that wants to avoid that. I use silent shutter and control my camera with CamRanger precisely so I don't have to touch my camera.
 
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bks54

EOS M50
Aug 30, 2018
47
55
According to Nokishita, the SA ring controls spherical aberration for bokeh adjustment. Magnification up to 1.4x.
 
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Sludz

CR Pro
Sep 16, 2020
7
3
Essentially would blur corners more and split the light spectrum. I can’t imagine you would want to control this aside from I don’t think you can control it. Canon is using a special blue coating that helps realign the spectrum.
This didn’t age well
 

miketcool

EOS 90D
Jun 29, 2017
168
345
This didn’t age well
Chromatic aberration and spherical aberration are the same thing right?

I followed this up with the Nikon 105mm DC lens that has the same ability to adjust spherical aberration. It’s helpful in portraiture when you stop down because of the narrow range of DoF. I still can’t see the benefit in Macro shooting. To Canon’s credit, the EF 100mm macro likely sold more copies for portrait work than macro work with it’s cheap complaint being harsh bokeh stopped down. At least portrait shooters have an expensive tool to add to their bag.
 
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