MayaTlab wrote: Mystik wrote:
The outcomes was pretty interesting to me...I was fully expecting the 35ZA to trounce the FE 35 in terms of rendering, as there's a lot going on in the background in terms of foliage and lighting, and the 35ZA is tried and true for environmental portraits for me....but at least in this example, they're on equal footing.
I think that past the APSC circle the difference isn't difficult to notice even in thumbnails. Converted in B&W to eliminate CA as a variable :
I'm not sure but I believe that the f1.8 has more field curvature / astigmatism and this could be why it produces bokeh balls with an increasingly hard edge in one axis moving towards the corners. I'm fairly certain that, CA aside (and it's got lots of it so putting it aside may not be a good idea) this is what most people dislike about its bokeh.
An other illustration of the aspects that some people may not like about the 35 1.8 FE's bokeh. I've taken two shots from Sony Alpha Blog's flickr stream, one from the 35 f1.8 FE and the other from the Sigma 45 2.8 (the polar opposite of the 35 1.8 in many respects), showing the same subject. The Sony's combination of CA, what I believe is astigmatism, and less well fine tuned spherical aberration compared to the Sigma 45, can at times be a recipe for disaster :
In some situations it won't be noticeable (the more defocused objects are, the less they're influenced by aberrations). In others it will ruin the picture (particularly ones that rely on the transition region past the APSC circle). There's nothing inherently wrong with that performance, most wide angle lenses used to be like that. But in recent years we've seen major progresses in that regard (the 35 1.4 ZE is an early example of this new breed of wide angle lenses with fairly low FC / astigmatism - not that it doesn't have a number of issues with its bokeh, but for other reasons). Neither the new 35mm 1.8 from Canon nor Sony are participating much to that progress if at all.
We've been living with such issue for decades so I don't think that it will prevent the production of good photographs though .
And then there’s the elephant in the room, the Sigma 40/1.4. It’s the living proof that if, at these focal lengths, if you want all three qualities of being sharp, fast and with well corrected aberrations, it won’t be small and light. Anyone here using that lens for walk around / tourism? Yeah I thought so
Sep 06, 2019 at 05:23 AM
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