35 APO-M performs well on a 44x33 mm sensor (Hasselblad X, Fuji GFX)

[onasj]

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Just a small note that the 35 APO-M casts an image circle large enough to cover a 44x33 mm medium-format sensor with only moderate vignetting in the corners and moderate purple color cast in the corners, both removable in post, for those who want to shoot it on a medium format sensor or film.

[cboy]

I understand the gfx 50s has fullframe crop mode so i was wondering if the original 100 has the same. At least it could take advantage of the mega pixels.

[frame-it]

https://docs.google.com/spreadsheets/d/1uxvvpxJ9QVFFyh0pW2rs9KBmUW9vlh-d-VnbcLDCTn8/edit#gid=0

[Guest JMF]

On 4/15/2021 at 5:33 AM, frame-it said:

https://docs.google.com/spreadsheets/d/1uxvvpxJ9QVFFyh0pW2rs9KBmUW9vlh-d-VnbcLDCTn8/edit#gid=0

Thanks for the link but my experience with the 50 Leica Apo in 44x33 is full coverage , no vignetting no smearing, just fine .

 

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I find Jeffo's list on Fujifilm GFX Madness facebook group quite helpful:

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Edited April 16, 2021 by JMF

[Guest JMF]

On 4/14/2021 at 9:31 PM, onasj said:

Just a small note that the 35 APO-M casts an image circle large enough to cover a 44x33 mm medium-format sensor with only moderate vignetting in the corners and moderate purple color cast in the corners, both removable in post, for those who want to shoot it on a medium format sensor or film.

Would you share please some photos ?

Best, JM.

[hdmesa]

On 4/14/2021 at 6:31 PM, onasj said:

Just a small note that the 35 APO-M casts an image circle large enough to cover a 44x33 mm medium-format sensor with only moderate vignetting in the corners and moderate purple color cast in the corners, both removable in post, for those who want to shoot it on a medium format sensor or film.

Are you taking about close distance wide open where most full frame lenses work on the GFX or at infinity stopped down?

Edited April 17, 2021 by hdmesa

[onasj]

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11 hours ago, hdmesa said:

Are you taking about close distance wide open where most full frame lenses work on the GFX or at infinity stopped down?

It actually performs well at a variety of distances and apertures.  Most Leica M lenses do NOT work without cropping on X1D/GFX sensors at any distance or aperture:

WATE at 16 or 18 mm: NO

*WATE at 21 mm: YES, some vignetting

21/3.4: NO

24/3.8: NO

28/1.4: NO

28/2: YES, but with strong vignetting especially at or near infinity, and at wide apertures

28/2.8: YES, but with strong vignetting and purple corners

Stemar: YES, but the divider produces some artifacts at top of the frame. Still, it's very cool to generate 3-D stereo image pairs using this old Leica lens and a current medium-format sensor!

MATE at 28: NO

MATE at 50: YES, but only at near distances

MATE at 35: YES, but with strong vignetting at the very corners

35/1.4: YES at closer distances or apertures around f/2.8, with some color shift

*35/2: YES, with some vignetting

*35/2 APO: YES, with modest vignetting and some purple cast in the corners

50/0.95: NO

*50/1.4: YES, with only slight vignetting at infinity

50/2 APO: YES, but only between f/3.5-6.3

*50/2.8: YES, a little vignetting wide open at infinity

*75/1.25: YES, slight vignetting at infinity

75/1.4: YES, but only around f/2.8 and at close distances

*75/2 APO: YES, almost perfect until f/8, only slight vignetting

*90/2 APO: YES, with only slight vignetting

90/2.4: YES, but only at mid/near distances

90/4: NO

135/3.4 APO: NO

Overall, the lenses I marked with an asterisk are the most useable: the WATE at 21 mm, the 35/2, 35 APO, 50/1.4, 50/2.8, 75/1.25, 75 APO, and 90 APO. Which is really a not a bad outfit if your goal is to shoot your small Leica M lenses on a cropped medium format sensor at a range of focal lengths.

[hdmesa]

22 hours ago, JMF said:

Thanks for the link but my experience with the 50 Leica Apo in 44x33 is full coverage , no vignetting no smearing, just fine .

Seems to be a disconnect between different users' experience with the Leica 50 APO on 44x33. I wonder if it has anything to do with:

• Using a 50S/R versus the GFX100/100S (100/S BSI sensor should be better at capturing the more severe angles of light in the corners)
• Adapter quality/accuracy for infinity focus
• Those seeing good corner performance are testing using landscapes/scenes where the land/scene is closer to the camera in the corners, thereby making good use of field curvature (if there is any) at the edges of 44x33
• Focusing differences: optimal focus distance for 44x33 may be less forgiving – maybe before the hard stop – or focus may need to be done at the corners versus the center

 

Edited April 17, 2021 by hdmesa

[SoarFM]

3 hours ago, onasj said:

if your goal is to shoot your small Leica M lenses on a cropped medium format sensor at a range of focal lengths.

I’m trying to word this in a way that doesn’t sound to snarky. All I can think of is “Why?” 

[Guest JMF]

6 hours ago, SoarFM said:

I’m trying to word this in a way that doesn’t sound to snarky. All I can think of is “Why?” 

 I guess it could be down to the adapter and the user's experience . I'm happy with my 50 Apo lens used on the Gfx50r and would like to see some shots taken with the 35 apo as well .

Best

JM

[frame-it]

7 hours ago, hdmesa said:

Adapter quality

is very important

[frame-it]

6 hours ago, SoarFM said:

All I can think of is “Why?” 

its fun, and the images are very nice.

GFX50R + Leitz Elmar 35mm LTM [1946]

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[Arif]

I am using the APO 50 on the 100s with the Novoflex adapter and find minimal vignetting as well.  Pictures are sharp at f2 (easy to focus on the 100s with magnification/peak focusing). As for the "why",  I am able to get 95-102MP of files which allow better printing and also allows me to supplement my GF lens line with my M lenses.  Note: I did not get the same minimal vignetting with the 35 AA; 50/1.0; 75/1.4 but was able to get 60-70 MP files after cropping.  Still need to shoot more to see if the character of the lens holds up.

[anorphirith]

Hi, just curious if anyone has sample images on this.

thanks !