kin2son wrote:
DavidBM wrote
mark1958 wrote
This is for those who have or continue to use both the 50mm/2 Loxia and the 50mm/1.5 Sonnar.
I realize the Sonnar may not be the best choice for landscapes but once stopped down to say f8 -- is there still a major difference in image quality including sharpness, tonal range etc between these two lenses? The reason I ask is that my Sonnar gets very good even in the corners at f8 and even at F11-- less distortion than I get with some of my other lenses (e.g. Sony 24-70/2.8) Yes. The difference in corner resolution at f8 between the Sonnar and the Loxia Planar is significant. Quite a large corner area is vastly worse. I don't mean coke bottle soft, but I mean quite noticeable without peeking at a modest print size. I love my Sonnar, but if I had to have only one of the Sonnar and Planar I would get the Loxia Planar. (although if I was mainly taking 50mm portraits or street work I might reconsider). The Planar has noticeably better microcontrast stopped down across the field too. Glad I found your post. I am contemplating whether or not to sell my Loxia and get this instead.
So what's your opinion? Which lens has more "character"?
Thanks in advance.
Gee that's a difficult question, because everyone means something different by 'character'.
What I mean by 'character' is endearing optical flaws: under corrected aberrations which have an effect (often in the bokeh) which can sometimes be used to artistic benefit. But by it's very nature, not all the time or it becomes an effect that you can be tired of.
If that's what you mean by character I'd say the C-sonnar is like that at it's wider apertures. But there's really not much point using it unless you have to stopped down. It becomes a perfectly acceptable but not by modern standards great 50mm stopped down (and in the outer field you might not find it acceptable, if you take images that rely on the outer field)
I do love the look it gives portraits at 1.5-2.5. But 'character' lenses all have a *different* character. Wheras optical perfection tends to look the same. So you need to look at a lot of C-Sonnar images to see if the character it has is one that *you* like, and compare it with more neutral lenses and other character lenses.
But if I were you I wouldn't sell your Loxia to get the Sonnar unless you have some other way to get a highly corrected image in this focal length range (GM zoom? 1.8/55? Even the cheap 1.8/50 @ f8 is sharper stopped down I suspect). Most of us that have and love the C Sonnar have it as a adjunct to a highly corrected lens. Of course it's not that the Sonnar is *terrible* stopped down. If it's all you have with you and you see a great image that needs across the field resolution then f9 and pray. But I don't think it's as good as the better zooms of today for that purpose, let alone the primes.
So by all means get the Sonnar (or a Jupiter or some cheaper variant). I'm having more fun with it than I've had with a lens for ages. But its not a replacement for your Loxia, but an adjunct. And if you can't afford both - they are pretty pricey - I'd stick with the Loxia. If I wanted an all round lens for both stopped down and wide portrait use the 1.8/55 is an alternative to having both the Lox and the C Sonnar. The Jupiter is very cheap though if you can find a clean one. That's something you could supplement your Loxia with without breaking the bank. It's basically the same design as the C Sonnar, but coatings not as good and a little less sharp in the centre at wide apertures.