RustyBug
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 p.34 #8 · Fujifilm GFX100RF Discussion and Image Thread | |
Lukacs wrote:
Is there any, more serious information, test (not YT content creator bs) about the lens quality?
I'm using my 35GM 90% of my shots. Other 10% when I want wider, and I tend to use my 20G in crop mode to get bit wider FOV. I'm certain sometime I'd miss fast aperture. I'm waiting for reviwes but can't find any reliable yet. I'd like to know how this lens compares to 35GM at F4.
I haven't found anything yet ... that presents technical objectivity regarding lens resolution, etc.
My gut tells me that this lens will perform "softer" than some of the world class leading MTF busting glass. My expectation is that its design (as noted by simple barrel distortion) will not achieve the same MTF levels of ASPH or APO glass. For instance, my Voigtlander 50/1.5 II Vintage is not bitingly sharp compared to its ASPH / APO brethren. Yet, it renders nicely and is plenty "sharp enough".
I'll put it through the paces for a comparison to my Q2 ... and I'm expecting the Lux to trump it on acuity, at f/4. But, my hope is that it'll be on par with the difference between say the Hassy original XCD glass and the new V or E series Hassy glass, similar to the diff between the Vintage / APO / ASPH in the Voigtlander lineup. Kinda like having a chisel that has been honed to 2000 grit, but not up to the levels of a 6000 grit honing. It's still way sharp enough to slice through and let you carve up whatever you like, but might not be as impressive on a paper cutting demonstration.
Until folks have it in hand, we're not gonna know for sure ... but, I'm going in to it with the perspective that my little OM 28 beat out a lot of lenses in a shootout for an overall optic (years back), despite other lenses having slightly sharper zone A performance. The Oly had a broader / balanced performance across A / B / C zones. Point being, how a designer balances out the quid pro quo aspects of optical design always comes with some degree understanding where the tradeoffs are / aren't ... vs. a single attribute, etc. The hint that it has simple barrel distortion (vs. typical ASPH wave distortion) is what I'm leaning on. While I'm not intimately familiar with your 35GM, the Zeiss tendency to harness ASPH designs (vs. spherical) would be something I'd factor into my expectations, regarding the magnitude of difference ... i.e. hoping it to be a good spherical design, yet, not on par with the best ASPH designs (for Zone A MTF performance).
That's part of the reason that Fred's reviews are so incredibly valuable. I'm hoping that Fred could get his hands on this lens for his world class review of it ... THEN, we'd really KNOW what it is / isn't. 
Till then, we wait for folks to get this one in their mitts to see what can / can't be done with it. The "lack" of folks showing off its bitingly sharp attributes in the reviews hints to it not being something that is going to head to head with other glass on the MTF charts. The X100 series optic isn't the MTF King, I don't expect the GFX 100RF to be an MTF King, either. I expect it to be excellent for its size / optical design choices ... even, if not class leading against other optical designs.
I think this one isn't going to be about how sharp the chisel is ... it's gonna be about how well balanced, the chisel sits in your hand and lets you move about your work, as effortlessly and smoothly as possible. That, to see what you can craft and create with the tool in your hand, moreover than measure how sharp the tool is / isn't against other tools.
Of course ... nobody wants a "dull" tool, either. They're of no inspiration to use.
We'll soon see where Fuji landed this one. Hopefully, it'll be full of inspiration, when landed in your hands.
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