Re: Comparison of three 50mm lenses at f2.0
AeroPhotographer wrote:
I posted these pics because many photographers discuss rendering where I can't see why they prefer one lens over another.
Several of you expressed preferences, but none have explained any reasons for their preferences. I would love to learn your reasons.
I also agree with several of you that the same lenses might produce different preferences with a different scene. I walked around my neighborhood and shot a bunch of scenes that appeared to demonstrate bokeh. This scene seemed best for comparison, so I returned and shot it with three different lenses. And yes, f2 was the largest aperture available on all three lenses.
The distance to the background is usually ignored when discussing bokeh. But if the background is sufficiently distant, it will blur quite well at f11.
I invite all of you to post lens comparisons on some other scene. You are welcome to do it on this thread.
TBH the exposure change is clouding some of the differences, and I don't know that this is necessarily the best scene to point out differences in rendering, it's almost the opposite (a scene where the differences will be more minor). I do think it's a worthwhile excitement tho, since so much is often made of some lenses' so called rendering.
To me the background in A is ever so slightly more soft (less contrast and hard edges to the OOF elements) but it's really subtle. "Rendering" is also often used as a catch all (or an entirely meaningless adjective) so I can imagine why you would want specifics pointed out. To me it usually does encompass a few things, tho mostly related to how the background and transition zone look, tho that can be tied to contrast and other aberrations like SA and LoCA.
I think a scene with more highlights in the background (shape and cleanliness of bokeh balls as well as their edges, and whether they start to swirl) as well as a background that's closer and melts away, could reveal more differences. Denser vegetation tends to do so as well, but against empty space or the sky it's easier to see whether it looks busier on one lens or the other.
I've been meaning to do a test like this with some lenses at wildly different price brackets, just for fun (I don't shoot each of them strictly for their rendering but it played into why I bought them). They're slightly different FLs so I'll have to frame carefully and crop some then equal out the res tho or it'd probably give it away. You telling us which is which yet?
Edit: Shooting something more level rather than into the ground might result in more highlights, likewise shooting something close by that fence (plush toy, whatever) with the fence fading more directly into the background would show more of the transition zone. To me the shadows/contrast in C just look a little harsher in the background (than A), the plant on the bottom edge is ever so slightly more obvious...
And B just looks brighter overall so more distracting. Again tho, it's pretty darn subtle here. Sometimes subtle differences that some people will only notice subconsciously can be what makes a lens more liked or less liked tbh, even while many won't give a toss or care.