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

mb66energy

EOS 5D Mark IV
Dec 18, 2011
1,504
371
Germany
www.MichaelBockhorst.de
What about "Static Aperture" ...
My idea is that you can decide
  • to have a classical 2.8 macro with fixed focal length where the effective aperture is f/5.6 at 1:1 or
  • to have a zoom like 2.8 macro where you change the focal length to get 1:1 and keep the f/2.8
Would be a great thing to tune the lens to maximize working distance if needed or to maximize aperture if you need low light compatibility in the macro range ...

But ... just an idea ...
 

dilbert

EOS M6 Mark II
Aug 12, 2010
74
53
Patent mentions variable spherical abberation ... are the CR guys trolling us or just not doing their research?
 
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jjesp

EOS M50
Dec 30, 2016
29
13
A great lens, I am sure. But again. The RF lenses are almost bigger than the Fuji GFX medium format system. Never understood the need of that RF mount, if it means bigger and heavier.
 

padam

EOS R
Aug 26, 2015
1,213
878
A great lens, I am sure. But again. The RF lenses are almost bigger than the Fuji GFX medium format system. Never understood the need of that RF mount, if it means bigger and heavier.
The primes are much faster and the zooms have a much more useful range (And both 70-200 lenses are small as well) and the USM motors inside these L lenses focus way faster.
 

KrisK

EOS M6 Mark II
Jun 8, 2013
75
22
I’m hoping it’s for “Slider Adjustment” or “Slider Advance”. The major missing feature in macro work is the ability to focus stack using just the lens. When you’re shooting magnified subjects, you often need to rely on a focus rail to incrementally slide the lens in and out to capture the narrow range in focus to stack. Simply moving the internal components in and out would achieve this control without the need of a rail and tripod. What a revolutionary idea this would be for macro shooting!!

EDIT:
Having looked at the patent, I’m gonna guess it does move the entire internal assembly in and out. SA could also be “Scale Adjustment” where you could change the magnification from 1:1 to 1.4:1 etc.

In terms of macro and stacking, Is the use of a slider preferable to focus bracketing (automation of which is built in to some Canon bodies.)?
 
Apr 8, 2021
2
2
... ' don't know.. but my 2 cents/best guess is "spherical alignment". Possibly an adjustment to the curvature of the focus plane. That would be cool.
 

dilbert

EOS M6 Mark II
Aug 12, 2010
74
53
EDIT:
Having looked at the patent, I’m gonna guess it does move the entire internal assembly in and out. SA could also be “Scale Adjustment” where you could change the magnification from 1:1 to 1.4:1 etc.

That's what I first thought too but other posts point out that the reason for the movement is to manage spherical abberation (according to translations of the patent.)
 

LensFungus

EOS 90D
Apr 8, 2017
126
528
I work for Canon and I can confirm that "SA control" stands for "Sony Alpha control". You will get the ability to change the temperature of Sony Alpha cameras nearby so that you can make them overheat and Sony users have to drop them. Canon, you evil genius!
 

wockawocka

EOS R
Sep 13, 2011
852
156
Unless it comes with at least two hookers on free play and a lifetime supply of chocolate it's going to be hard to better the EF 100mm 2.8
 

pape2

EOS 90D
Mar 19, 2021
116
147
Does this spherical abberation things means macro photographers are paying from some portrait photographers quirks.
And price is 3000E :p?
 

highdesertmesa

R5 | 50R | Q | M
CR Pro
Apr 17, 2017
348
485
www.instagram.com
A great lens, I am sure. But again. The RF lenses are almost bigger than the Fuji GFX medium format system. Never understood the need of that RF mount, if it means bigger and heavier.
RF mount is the same diameter as EF, they just moved it closer to the sensor. Canon has gone all out on big lenses in the pursuit of the perfection that the short flange distance now affords. Nikon went a different direction with a series of small f/1.8 lenses even though the Z mount (55mm) is 1mm wider than RF (54mm).
 

Hobby

RP 6D 90D
Jul 23, 2017
14
11
Belgium
This RF100mm on an EOS R6 (20Mpx) or on an R5 (45 Mpx): would that be a huge difference in image quality? (Or on an EOS Rp 26 Mpx?) My question is: is sensor resolution very important for Macro?
 

Viggo

EOS R5
Dec 13, 2010
4,737
1,428
I have no idea, but I find it hard to believe it’s “Spherical Aberration” or “Spherical Adjustment” I mean, who uses a Canon camera and knows wth Spherical Adjustment is outside us nerds on CR?

DS = Defocus Smoothing sounds much more Canon like. Easy to understand even though it’s a highly specialty lens...
 
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bbasiaga

Canon Shooter
Nov 15, 2011
419
447
USA
This RF100mm on an EOS R6 (20Mpx) or on an R5 (45 Mpx): would that be a huge difference in image quality? (Or on an EOS Rp 26 Mpx?) My question is: is sensor resolution very important for Macro?
Not any more important than on other photography pursuits. How big do you want to print, and how much do you want to crop? I did a lot of macro with my digital rebel and the non L 100mm macro. The biggest print I did was I think 13x19" of a praying mantis. 6.3mp. It looked great, even though the internet would tell you that it couldn't exist because there weren't enough pixels to produce it.
 
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Apr 8, 2021
1
0
I’d guess SA control is for adjust before & after subject out of focus similar to Nikon & other brand have done in the past , 135mm defocus DC
 
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