wfrank wrote:
Trying to understand... could you elaborate? I am normally using the 35 pretty much wide open, shouldnt the metering then use what it sees and be more correct? Especially at 1.4?
Yes, you are right. Metering with adapted glass even occurs wide open though, but it's not as bad as when stopping down (which invariably causes underexposure, even up to ~2 stops). I don't know what electronically coupled lenses do to keep metering accurate (ZE lenses for example), but it must be something more than what chipped adapters do.
obik wrote:
Focus breathing. Framing can change a lot at the near end.
I don't believe it's proper to call it focus breathing. I thought the FL reduction is done on purpose so that less extension is needed to achieve maximum reproduction ratio (1:1 or 1:2 usually). Non-macro lenses that focus by linear extension also have focus breathing, which means that the FL indeed is indeed reduced a bit when focused at anything other than infinity, but not nearly as much as with macro lenses.
Also, I'm having the same problems with framing when using a bellows (== linear extension), so I'm not convinced that the FL reduction is a good or bad thing in this respect.
AhamB wrote:
I don't believe it's proper to call it focus breathing. I thought the FL reduction is done on purpose so that less extension is needed to achieve maximum reproduction ratio (1:1 or 1:2 usually). Non-macro lenses that focus by linear extension also have focus breathing, which means that the FL indeed is indeed reduced a bit when focused at anything other than infinity, but not nearly as much as with macro lenses.
Why shouldn't it be called focus breathing? The FL reduction is a deliberate design choice, but that doesn't make the focus breathing anything but focus breathing. We don't say a fisheye has no distortion just because it's deliberate part of the design.
Also, I'm having the same problems with framing when using a bellows (== linear extension), so I'm not convinced that the FL reduction is a good or bad thing in this respect.
If you move the objective end of the bellows, some of that is doubtless just changing perspective. I'd be really interested in seeing a test between the 100L and 100 MP to see how much of the FOV change with linear extension differs from FL shortening.
It's worth noting that I'd rather have an IF macro lens over an extending design 99% of the time. Focus breathing bugs me sometimes, but it's preferable to a lens that extends as it focuses down.
obik wrote:
It's rarely a problem hand-held, but it can really mess with you if you're on a tripod. Well, it really messes with me, anyway. YMMV.
My macro shooting is somewhere around 50% hand-held and 50% tripod.
obik wrote:
It's worth noting that I'd rather have an IF macro lens over an extending design 99% of the time. Focus breathing bugs me sometimes, but it's preferable to a lens that extends as it focuses down.
Well, in that regard we are very much alike. Only 1% difference.
Yakim Peled wrote:
Damn! Just after I spent more than 3K on the 2 TS lenses I wanted.
Happy shooting,
Yakim.
Yeah, but you actually get to use those lenses right now instead of having to wait for Samyang's TS to come to market. And, when it does, if you want to sell those other ones, you should be able to get a decent price. Just think of it as an extended rental
I am curious though how Samyang's TS will handle geometric distortions. Architecture photography is one of the big uses for TS lenses, and one of the reasons Canon's TS-Es are so popular in this regard is they do a great job of keeping lines straight. (Yeah I know, you can always correct distortions in software...but you can't avoid the fact that pushing pixels around in software will degrade the image quality ever so slightly, and it also means you will lose a little of the image around the edges of the frame.)
artd wrote:
Yeah, but you actually get to use those lenses right now instead of having to wait for Samyang's TS to come to market. And, when it does, if you want to sell those other ones, you should be able to get a decent price. Just think of it as an extended rental
You're quite right, of course. Another thing, I just remembered that I had 3 Mamiya 645 lenses with Mirex TS adapter which I eventually sold just because it was inconvenient to use. The 24/3.5 II and 85/2.8 PC are real peaches in all aspects.
Was hoping it would be out by the and of this year, but I'm guessing that's not going to happen. I'm really looking forward to seeing how this lens performs.
i've been checking the samyang website several times aweek for the past month.. it'd be nice if they gave an update as it was originally 'by the end of the year or early 2012'. hopefully there's a firm date now.
