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rscheffler
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Re: The R6M3 and RF 45 1.2 lens.




jaygould wrote:
bman212121 wrote:
jaygould wrote:
EB-1 wrote:
Look at that horrific spherochromatism in the TDP samples.
If there is not heavy SA I don't know what.

EBH


SA is supposed to be a bad thing? I really like having a lot of SA. It makes for beautiful rendering. One of my favorite lenses on the E mount is the Sigma 45mm f2.8. If this Canon renders similarly, then that's great. And this lens is even cheaper than the Sigma, while being several stops faster too.


Can you provide an example of where it's being used effectively?

I understand sphere = circular ball and aberration = deviation / error. But I'm not entire sure how to pick out what you're referencing from a photo and how to utilize that characteristic for enhancing an image.


It just makes bokeh more smooth.

You can look at the photos posted in the Sigma 45 thread:
https://www.fredmiranda.com/forum/topic/1608234/

There are some bokeh comparisons with other lenses. Sigma decided to under-correct spherical aberrations, so that the bokeh would look creamier.


“Leica glow” is another term you can look up that refers to under corrected spherical aberration. Basically not all of the light rays focus at the same point and result in a hazy, dreamy kind of a look. The SA masks fine details, resulting in a kind of soft but sharp look. It also can result in smooth bones but there are a lot of high SA lenses with energetic background bikes, such as the vintage Zeiss Sonnar types. The bikes generally calms down by stopping down a little. This will also boost contrast by reducing SA. In this way you can tune the look of the lens to taste.



Nov 07, 2025 at 03:24 PM





  Previous versions of rscheffler's message #16924106 « The R6M3 and RF 45 1.2 lens. »