Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Interesting ....
#1
The RF 35mm f/1.8 has quite massive RSAs. And that's (also) a macro lens ...
Chief Editor - opticallimits.com

Doing all things Canon, MFT, Sony and Fuji
#2
Why is this interesting? Isn't it closer to disgusting that such a lens would have massive RSA ?
#3
Well, it's interesting because this is the 2nd modern Canon lens that is showing this issue.
It doesn't happen that often after all.
Chief Editor - opticallimits.com

Doing all things Canon, MFT, Sony and Fuji
#4
In a lens as compact (despite the impressive stats) as this, something has to give. Smile
#5
(12-09-2019, 10:42 AM)Klaus Wrote: Well, it's interesting because this is the 2nd modern Canon lens that is showing this issue.
It doesn't happen that often after all.

Which was/is the 1st one, and how did you detect it? When taking the LoCA test images on manual focus?
#6
Quick question: what does RSA stand for? I'm guessing R-something Spherical Abberation, but I'm stumped.
#7
R = "Residual" methinks.
#8
(12-09-2019, 12:39 PM)Brightcolours Wrote:
(12-09-2019, 10:42 AM)Klaus Wrote: Well, it's interesting because this is the 2nd modern Canon lens that is showing this issue.
It doesn't happen that often after all.

Which was/is the 1st one, and how did you detect it? When taking the LoCA test images on manual focus?

The 24-70mm f/4 IS had massive RSAs.

The surprising aspect about the RF 35mm seems to be that AF isn't overly reliable either - but I have to verify that again.

(12-09-2019, 06:29 PM)Rover Wrote: R = "Residual" methinks.

Residual spherical aberrations.
Chief Editor - opticallimits.com

Doing all things Canon, MFT, Sony and Fuji
  


Forum Jump:


Users browsing this thread:
1 Guest(s)