zhangyue
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 p.64 #5 · Medium Format Digital Images Thread | |
BJNY wrote:
Thank you@zhangyue.
I would love to know more about your favorite lenses,
and what qualities you like about each.
As mentioned, 70 Summarit is probably one of my favorite standard lens (join with 50lux ASPH and 55 OTUS for difference reason). The lens has a quality I called smooth sharpness that very sharp but also good for skin and portraits. The Bokeh is misleading for a f2.5 Lens, and smoothness might come from lens design or S format and sensor.
35 is also the best 28mm lens I ever see in term of rendering. It is almost like a twin to 70mm. The sharpness is very impressive. This kind of quality is hard to put in word as I am pretty sure some of magic comes from sensor size, some from lens design, some from even 16 bit color depth (will be a hot debate about bit length I know), everything come together make you notice the difference during editing. Will that be easily seen by clients (you are a pro, right) or on internet 1600 size image. I would say yes or no. Yes, in a sense, I can see the whole rendering special more often with medium format but you won't see whole picture here on internet, no, it is that in some case there is no difference compare to FF or even APS-C. I'd say how to use it also make a difference most of time. at f2.5, the magic stick me quite often so it is not as simple as shallow DOF.
And both above lenses are easiest to get at great price now make them a no brainier for recommendation.
120 contax APO is my favorite lens around this focal length. Pure optically speaking, I have used or seen better lenses than it, but compare images I get with 120 contax and any FF image in similar focal length, I always prefer 120's image by a wide margin. The color, DOF transition, and Bokeh just out of this world beauty. Viewing and focusing it through big bright S OVF is experience to die for. However it is slow at f4. with CPL, viewfinder can be dark and handhold will be a problem for S camera given ISO above 400 for landscape is not usable in my book. (portrait is fine, but I loose magic skin color)
140 contax has one of best Bokeh I ever seen, very smooth and paint like. However, it has lots of CA and out of center is not sharp enough for me for landscape.
45 contax is slowly gain my respect in term of rendering and sharpness at center WO. It is different than Leica S's modern smooth clean look, but at the same time, keep in mind we are only use part of its full coverage, so no boekh jittery around corner, Bokeh ball are round all the way to corner of S and sharpness is very decent only compare short in high frequency detail of Leica S glass .
180 S actually is the absolutely best lens from any point to view it: sharpness, CA correction, Bokeh. Even it is kind of slow, It is perfect lens. but I don't use this focal length much and tend to keep it at home more. but in term of other characteristic, it comparable to 120 contax I mentioned above. IF this is your focal length, please don't hesitate to get it.
Now, 100cron, I use it most often out of any lens above, and possible give me most keepers than any other lens. It is the size and speed that make it perfect company to S. Because I can stitch a few frame to get 70 perspective or get shallower DOF portrait for my kids if I want and I also can get it work to lower light than other S lens because of f2. However, you don't see me recommend it. It is like sometimes, even a pretty lady in front of you, but you just don't feel anything. This can be very personal, could be just my expectation is high or its rendering is just too neutral. but it is anchor in my S setup I would say, it is very sharp at f2 no complain for what so ever. It do have CA and I can see Leica is trying to correct it for fast glass like this.
24S can get job done, but I don't recommend it personally for the price and size also performance. it doesn't offer sharp corner at f3.5 as most modern good SWA dose but I guess for the landscape use (f11) or portrait (center sharpness), it is fine.
I assume you are asking S medium system lenses. For FF lens, the topic can go on and on 
It would be ideal that I can illustrate above with picture but that require lots of work you have to take my word for it now I guess with a grain of salts as it is personal.
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Steve Spencer wrote:
Here are some shots from Asilomar Beach in Pacific Grove, CA (near Monterrey) with the Fuji GFX and the Hassy HC 100 f/2.2 and the HCD 24 f/4.8. I think they do a nice job of demonstrating the wide dynamic range of the mini MF sensor.
The first one is great.
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