MR do little wrote in post #9227734
So you tested the lens in the camera store...?
Yep, indoors, but also outdoors.
Well thats great, for many vignetting isnt such a problem.
Well, for me it depends on how serious it is and at what apertures. I like to shoot a fast lens in low light, and heavy vignetting is a no-no to me in that case, not because it isn't incorrigible in PP, but because you loose a fair amount of DR too, when you don't have a lot to start off with. Generally, strong optical vignetting is an indication, to some degree, of sharpness as well. Compare attached pictures.
LMAO
Are you serious ? The 50L is a prime example (no pun intended) if compromises made to have a fast lens.
In one sentence you say "your" 50L dosent have any more issues, next you say no more then is documented on this site... confusing to say the least.
I didn't want to put the story up another time, what is documented on this site in my own posts about my own 50L, that's all, but here you go.
In short: a few years ago I was looking for a fast 50, did test, amongst quite a few others, a 50L - focus shift. IQ in sharp areas incredible, which si why I wanted to have a good one - knew it was possible. Over period of > 1 year tested 4 more. First two of those: focus shift (just like first, from F/1.4, worst at around F/2, disappeared by F/2.8, from MFD to about 1.5 and 1.8 m, to different degrees for each lens). Next two: "normal" backfocus (same amount, all apertures, all distances). Kept last one. Sent to Canon for recalibration, twice. Second time around was perfect. Has become my preferred lens.
This you tested in the store ?
As I said, yes, not only indoors, but also outdoors. Walked around with it taking some shots.
Its funny cause you can detect the Vignetting of the 28/2 and not on the 50L, just as some people wont be bothered with the vignetting on the 50L, in fact they think of it as a charateristic same goes for the 28/2.
It is quite a difference in scale. It is immediately noticeable with the 28 at F/2. I've attached two images, 1 at F/2, the other at F/4. They are processed exactly the same, i.e., exposure correction exactly the same amount, and sized for web in eaxctly the same procedure and steps.
Now anyone having more then fondled the lens in the store, knows that 28/2 is not a "flat field" lens, meaning it suffers from FC wich in turn makes it less then ideal for someone looking for a lens for flat field reproduction. This on the other hand i would think is a real (bigger then vignetting) issue for those that need a lens performing equally across the frame.
If I want a flat field lens, I'll get a short macro lens, not a fast WA or standard lens. I'd get a 28 for landscape, city scape, group portraits. And I'd get a fast 28 for low light too. This is where heavy vignetting is a problem, unless you only want to see the centre, or everything in the centre sharply, see my remarks higher up. Field curvature will be taken into account when framing and focusing, so no problem for me, certainly not with this lens.
Yes. Which is why I added the note. Others may have different needs and/or opinions.
Why do start to get worried ? You dont own the lenses in question. Nor do you need to.
No. But I do get worried because I would like to have a fast 100 which can compete with an L-lens. Just like I was looking for a fast 50, I'd really like a fast 100. And no, the EF 100 F/2 doesn't cut it for me. Not the same.
Do you have the 50/1,4 ZE ?
No, I have a CZ 50 F/1.4, as I indicated. It's also in my gear list.
How do you hope the 100/2 ZE will perform diffrently compared to the 50/1,4 ZE. Of course it will since they are two completely diffrent designs.
With regard to performance wide open, IOW, at F/2.
I played with a ZE 50 F/1.4, just for the sake of it a while ago, because I wanted to see whether it was better than the CZ 50 F/1.4. It is a little, as it is sharper at F/2. Other than that it is about the same.
I want a 100 mm which is fast, and which is excellent at F/2, without noticeable vignetting. I am hoping the ZE 100 F/2 is the lens that delivers that. I get worried because personally, I think the other ZEs I mentioned here are not as good as people believe them to be, specifically when used wide open. They are good to excellent two stops down from wide open, but that is not what I am looking for in a fast lens. To me it is F/2 and be there with a WA of 24 mm and longer lens up to 135 mm, F/2.8 with an UWA down to 20 mm, and F/4 if shorter. This is where they fall short, for me.
Kind regards, Wim
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