Posts: 7,711
Threads: 1,754
Joined: Apr 2010
Reputation:
37
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
Posts: 205
Threads: 4
Joined: Apr 2010
Reputation:
3
Why is this interesting? Isn't it closer to disgusting that such a lens would have massive RSA ?
Posts: 7,711
Threads: 1,754
Joined: Apr 2010
Reputation:
37
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
Posts: 56
Threads: 1
Joined: Jan 2019
Reputation:
2
Quick question: what does RSA stand for? I'm guessing R-something Spherical Abberation, but I'm stumped.
Posts: 7,711
Threads: 1,754
Joined: Apr 2010
Reputation:
37
12-09-2019, 08:33 PM
(This post was last modified: 12-09-2019, 08:34 PM by Klaus.)
(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
