απίστευτα κακό το QC στους φακούς
Fujifilm GF lens quality control is the usual roll of the dice, it seems.
Examining my Fujifilm GF 120mm f/4 images, I see that all of them show left/right lens skew: the left side is blurred and the right side razor sharp, and at full-res the image below shows it in an obvious way even on a Retina display, even with f/6.4 partially masking the skew.
Fujifilm GF 120mm f/4 Panoramas: Eastern Sierra (GFX100)
Two years ago Fujifilm shipped a coke-bottle 110mm f/2 as I showed. It seems that Fujifilm has done nothing in the quality control area. It’s a medium format system, WTF.
As a pro, I always know I should pre-test gear. But for me this is often unworkable—I often have the van packed and ready to go, awaiting arrival of the FedEx truck with the lenses and/or camera. I shoot far more in the field than I can examine, often returning back to scarf food and sleep (11 PM or later). It is very hard to actively test a lens on such a schedule and even harder on an iMac 5K with its ultra-high pixel density. So I sometimes get Screwed. Accordingly, I have little love for companies that ship stuff intended for users to test (or not, a winning scheme for poor quality control), instead of spending the extra $50 at the factory to f*ing do it right before shipping it.
Now I get this skewed sample of the Fujifilm GF 120mm f/4 which has damaged all my work with it over a very strenuous 18 days of shooting. The 23/4, the 32-64 and the 120/4 all showed varying degrees of optical asymmetry, the 120/4 being the worst offender and unacceptable, the other two being off slightly but usable, but a nuisance I had to account for—focus stacking to the rescue.
Late in the trip after I saw the lens skew issue with the 120/4, I spent an hour trying to make an image sharp across the frame at f/5.6 on a distance scene. I failed to be able to do so—focus on the left and it was sharp; focus on the right and the left side goes blurry. How can Fujifilm ship out garbage like this to pros?
Shame on you, Fujifilm. I don’t go shoot your 'shit' for 2.5 weeks, hiking 14 hours a day for crap like this. I expect quality control consistent with a $20K system, not that of a $399 DSLR (which is probably better). It is not like I can make a 600 mile round trip and wait for a better sample—and my images are damaged forever. My time and effort were invested for degraded results. That is what really rankles, because it need not happen.
I have had numerous bad samples from Fujifilm from 2017 through 2019—nothing apparently has changed in quality control land at Fujifilm. Indeed, I would say that most Fujifilm GF lenses I have used have had symmetry problems—witness the Fujifilm GF 23mm f/4 that I shot in December 2018 on the Fujifilm GFX-50R which could not make sharp edges at any aperture at 50 megapixels—and how much better the sample in August 2019 on the 100-megapixel GFX100.
από τον Lloyd Chambers
