Patent: Optical formulas for Canon RF macro lenses

Canon Rumors Guy

EOS-1D X Mark III
CR Pro
Jul 20, 2010
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We’re obviously going to get an RF L macro lens sooner than later, and Canon News has uncovered another patent showing various optical formulas for such a lens.
Canon RF 65mm f/2.8

Focal length: 65.13mm
F number : 2.92
Angle of view: 18.38°
Image height: 21.64mm
Lens length: 135.78mm
Backfocus: 21.40mm

Canon RF 90mm f/2.8 Macro

Focal length: 87.04mm
F number: 2.92
Angle of view: 13.96°
Image height: 21.64mm
Lens length: 135.86mm
Backfocus: 19.58mm

Canon RF 100mm f/2.8 Macro

Focal length: 97.62mm
F number: 2.92
Angle of view: 12.50°
Image height: 21.64mm
lens length: 123.21mm
Backfocus: 18.86mm

Canon RF 180mm f/2.8 Macro

Focal length: 189.96mm
F number: 2.92
Angle of view: 6.50°
Image height: 21.64mm
Lens length: 185.34mm
Backfocus: 23.95mm
Continue reading...


 

slclick

Pinhole
Dec 17, 2013
4,189
2,196
Good news. Personally a great 100-ish macro and a pancake would get me onboard onto the RF train. I don't need IS for a macro lens, as I do nearly 100% on a tripod, ymmv. Plus, won't the bodies be stabilized?
 

lbeck

*
Jul 30, 2019
16
38
Man I hope these come soon, I’d prefer the 100 or 180, and it’d be great if one of them did more than 1:1 mag, I’d love a 1-5x like their manual focuse MP-E 65
 
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Chaitanya

EOS R
Jun 27, 2013
1,316
428
34
Pune
Personally I would like to see 180mm f4 IS USM macro over 180mm f2.8 Macro. Sigma already offered similar lens and it was very bulky lens. Now due to shorter flange distance if these lenses offer some additional working distance over their Slr counterparts then I would gladly purchase these lenses along with hypothetical crop sensor based RF camera.
 

CJudge

EOS M6 Mark II
Mar 22, 2019
61
75
Ireland
www.colin-judge.com
Good news. Personally a great 100-ish macro and a pancake would get me onboard onto the RF train. I don't need IS for a macro lens, as I do nearly 100% on a tripod, ymmv. Plus, won't the bodies be stabilized?
The 100 macro makes for a great portrait lens too, and that's where a lot of shooters would benefit from IS. Although with the upcoming IBIS, all of this matters less and less...
 

slclick

Pinhole
Dec 17, 2013
4,189
2,196
I wish I could find the quote, I think it was from the CEO of Olympus who said there is a limit of how many stops of stabilization is possible due to forces from the Earth's rotation....anyone?
 

koenkooi

EOS R
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Feb 25, 2015
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BeenThere

EOS R
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Sep 4, 2012
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Eastern Shore

lexptr

Photograph the nature while it exists...
Aug 8, 2014
55
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Wow, 180mm f/2.8 is very interesting! Hope it will sport IS.
Also hope the 65mm will be the MP-E counterpart with improved sharpness.
Switching to R system one day gonna be a budget disaster... :)
 
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joseph ferraro

5DM4 Macro
Apr 16, 2020
1
3
Can I hope and hope that there might just be an updated RF 65mm lens like the MPE-65. From my handheld macro perspective IS isn't much of an issue or want, since at +1x or more I feel that it wouldn't have much effect. Anyone on here use the MPE-65 on a EOSr body?