I'm not much of a sunstar shooter, and it's been dark and dreary all weekend. With 9 rounded blades, I can't imagine it will be a strong point for the Sigma. The CV's 10 straight is probably much better suited for sunstars.
-Tim
nhsonyshooter wrote: tsdevine wrote:
The more resolution, the harder it would be to get. So that probably is a good part of it.
nhsonyshooter wrote: tsdevine wrote:
I see it in both shots, that's moire.... So both lenses are sharp enough to excite moire out of the fine grain in the wood posts.
That's not a lens aberration, that's bayer and a lack of AA filter.
-Tim
nhsonyshooter wrote: tsdevine wrote:
Initial thoughts is that is performs similarly to my CV 110. The MF experience is better on the CV, but I think I can manage MF with the Sigma. I had planned to use the Sigma when I'm out with the family and can't setup properly for macro with the CV. I'll try to post some more, but here is a f/2.8 shot from both the Sigma and CV. Both were processed through Photo Ninja and no CA correction (or fringing) was enabled.
Sony a7R III + Sigma 105mm f/2.8 DG DN Art @ f/2.8
The Sigma has softer edges on the bokeh, at least in this shot.
I'll try to post some other comparisons later.
-Tim
Interesting. When you look at the full size files you see magenta and green in the wood post base (on the CV) that is in the middle (in focus area and pixel peeping of course). The Sigma has none of it. I would have thought it would have been the other way around.
Way more evident on the CV. Which is why I'm surprised because I had that lens and never had anything like that pop up. It was on the Riv though so maybe that is the difference.
Yeah both look really good though. I'd never be pixel peeping that much anyway. How are the sunstars on the Sigma?
I think the absense rather than presence of sunstars is a strong point of the Sigma. I don’t like sunstars and think it looks like a cheap filter effect. Besides rounded aperture blades improves bokeh in the close up and macro range.
So you think the Bokeh is worse on the CV?
In the macro range, yes. OOF highlights get a polygonal shape, which isn’t very attractive. I don’t especially care for sunstars, but for those who do sunstars are most relevant in landscape images. There are examples to illustrate this in the thread dedicated to this lens.
I like multi purpose lenses which is why I asked about sunstars. Yes I like the "cheap filter" effect as well. Always rather have the ability to create a look than not have that ability. I'm intrigued with the Sigma regardless (mostly because AF is useful in those other areas) as a macro (which I don't do alot of), landscape, Portrait, and even street lens. I had the CV110 (and used it for all 4 of those things) and never noticed any issues in Bokeh but then that's a personal taste thing. I would be interested if you could point to an example of this on the 110 thread because I have seen a heck of alot of nice images there and don't remember a "bokeh" being particularly distracting. I'm sure there is one, I am just having trouble I guess visualizing what your talking about.
Maybe Tim could have a look these days at the Sigma's flare / veil with the sun just outside the frame. The CV 110 can certainly look distinctly "vintage" in such situations.
Nov 02, 2020 at 07:15 AM
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