The Zeiss/Sony cobranded Distagon T* FE 35mm f/1.4 ZA lens gets some digital ink for its quality, but gets a lot more for its supposedly horrid copy variation. Those of you who are regulars readers her know that I believe that many, if not most, of the lenses returned by customers as decentered, tilted, or… [Read More]
Luminance and focus plane
Fair warning: this is a nerdy little post, of interest only to photo-techies and numbers junkies. Who’s left? Jack, I knew I could count on you. A reader took me to task several days ago for using the Adobe RGB green channel as a proxy for luminance when I measured focus accuracy and focus shift…. [Read More]
Fuji 32-64/4 at 32 mm focus shift and autofocus accuracy
This is a continuation of a series of posts on the Fuji GFX 50S. You should be able to find all the posts about that camera in the Category List on the right sidebar, below the Articles widget. There’s a drop-down menu there that you can use to get to all the posts in this series;… [Read More]
Fuji 32-64/4 at 44 mm focus shift and autofocus accuracy
This is a continuation of a series of posts on the Fuji GFX 50S. You should be able to find all the posts about that camera in the Category List on the right sidebar, below the Articles widget. There’s a drop-down menu there that you can use to get to all the posts in this series;… [Read More]
Fuji 32-64/4 at 64 mm focus shift and autofocus accuracy
This is a continuation of a series of posts on the Fuji GFX 50S. You should be able to find all the posts about that camera in the Category List on the right sidebar, below the Articles widget. There’s a drop-down menu there that you can use to get to all the posts in this series;… [Read More]
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