GF 35-70mm vs Nikon 20-35mm f2.8D (New GFX Owner)

Started 3 months ago | Discussions thread
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cuppajoetography Regular Member • Posts: 155
GF 35-70mm vs Nikon 20-35mm f2.8D (New GFX Owner)

Hi everyone,

After a fairly long journey from film and in between CCD, Foveon and CMOS, I finally pulled the GAS lever on a beautiful GFX 50S found on this island So I "was" planning to wait till next year before getting any native GF lens, and brought along thisNikon 20-35mm f2.8D(which I recently acquired for Nikon DF) during my testing at the store. Thankfully, this 30years old Nikkor lens somehow managed to cover GFX sensor pretty well with only some vignetting at 20mm. 24, 28, 35mm is very usable but no doubt soft corners wide open and sharpens up nicely at F8 F11 and so on. I'm also blessed to know DF kit lens, Nikon 50/1.8G also covers entire GFX sensor but ill leave this wonderful combination for another day. Then few days later, GAS brutally caught me again when I found out the holiday promotion for GF 35-70mm f4.5!! So here's my set now..

Since I can't find much information online with this Nikon 20-35mm f2.8D lens, and I guess its normal for new GFX user to ponder "how much resolution / details am I losing out?" when adapting some old vintage full frame lenses and if capable to resolve the 50mp MF sensor compared to native GF lens, etc. So I decided to do a simple handheld landscape test and here's my unscientific comparison

* GFX Setting : Auto mode, handheld

* Both lens at 35mm (28mm FF equiv.), aperture f11 , exposure -1

* CaptureOne 22 : RAF raw; same setting (exposure +1, shadow +50, highlight -50, sharpness +250)

Center @ 200%

Top right corner @100%

Extreme left @100%

* Exported from Captureone

Nikon 20-35mm F2.8D @f11

GF 35-70mm f4.5 @f11

As a beginner to high resolution cameras, I'm surprised this 30yo Nikon lens is almost on par with native GF 35-70mm in terms of details and sharpness. - which also brings to my next question below for 28, 24 or ultra wide lenses for GFX 50xx owners.

So I know Fuji will be telling me to just get GF lenses for ultimate sharpness and I won't go wrong "but & if" given details and sharpness for 28, or 24mm lenses are all pretty much similar at 200% or 300% pixel peeping - how would you determine what's a good landscape lens for GFX? Zeiss "Pop", Micro-contrast?


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Just another average Joe from Asia

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