Otus 85 on Hassy X1D: image circle big enough for the sensor?

ahsanford

Particular Member
Aug 16, 2012
8,617
1,642
Can I get a BS meter on this one?

https://petapixel.com/2017/12/15/hasselblad-x1d-zeiss-otus-85mm-ultimate-image-quality/

1) How is this lens' image circle covering a 44x33 sensor?

2) On a FF sensor, the 85 Otus is a bit over two stops of vignetting. How would that get less with a 44x33 MF sensor?

- A
 

ahsanford

Particular Member
Aug 16, 2012
8,617
1,642
He apparently gets into the Otus is oversized argument here:

https://youtu.be/IDZMqQIhNDY?t=2m16s

If true, Sigma needs to start making immense oversized lenses for FF now that can drop into an adapter like this. Because if undercutting Canon is profitable, imagine how profitable undercutting MF lens folks would be...

- A
 

privatebydesign

EOS-1D X Mark III
CR Pro
Jan 29, 2011
9,694
4,253
ahsanford said:
On a FF sensor, the 85 Otus is a bit over two stops of vignetting. How would that get less with a 44x33 MF sensor?

- A

Give Rishi the figures and say they came from a Sony test scenario ::)
 

ahsanford

Particular Member
Aug 16, 2012
8,617
1,642
But the sample files are indeed 50 MP, so this isn't cropped output off the sensor.

Any chance the adaptor is stretching the output on the back end of the FF adaptor to fill the MF frame? Is that even possible?

- A
 

3kramd5

EOS R6
Mar 2, 2012
3,084
405
ahsanford said:
But the sample files are indeed 50 MP, so this isn't cropped output off the sensor.

Any chance the adaptor is stretching the output on the back end of the FF adaptor to fill the MF frame? Is that even possible?

- A

Yes, that's what a teleconverter does.
 

aceflibble

EOS RP
May 8, 2015
298
71
Do bear in mind too that the X1D's sensor is pretty small by medium format standards. The Fuji GFX has the same size sensor and people have adapted Canon EF lenses to that.

A '35mm' lens projecting an image circle large enough to cover these smaller-than-6x4.5 'medium format' cameras isn't particularly special. The time to get excited will be when full 6x4.5 digital occurs and we can adapt lenses to that. (Though personally, as someone who grew up on large format and mostly used 6x7 for the last twenty years, even 6x4.5 doesn't get me too excited; 35mm sensor cameras can easily replicate the same look with f/1.4 and faster lenses.)
 
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