SR3 mirror clearance measurements?

[Jacob Robinson]

For those interested the 20mm PL does not fit the Aaton XTR Prod or LTR.

[Matt Figler]

6 hours ago, Jacob Robinson said:

For those interested the 20mm PL does not fit the Aaton XTR Prod or LTR.

did you try removing/unscrewing the rear cone on the lens?

[Jacob Robinson]

I did not. I looks like the rear, whilst clear of the mirror comes into contact with the ground–glass block on the prod

[Raymond Zrike]

Huh I thought the Aatons had more clearance than the SRs. Does that mean the 20mm won’t fit on the SRs?

[Jacob Robinson]

I can't say for certain but I suspect not. I think the width of the rear element is the issue rather than the depth. It did fit on a Kish 16mm viewfinder.

[Jacob Robinson]

@Matt Figler unscrewing does not help. Too bad.

[Tommy Austin]

On 5/2/2024 at 7:55 AM, Jacob Robinson said:

I can't say for certain but I suspect not. I think the width of the rear element is the issue rather than the depth. It did fit on a Kish 16mm viewfinder.

Couple months late, but I have an Arri SRI that was converted to s16 at Visual Products and I can confirm that the Laowa 20mm pl mount nanomorph does not hit the mirror or the ground glass on my camera. I’m very excited about this lens… I had done some comparison measurements on the rear element of a Zeiss 9.5 and it seemed pretty likely that the 20mm would work. So far so good! It also is small enough that it has plenty of clearance under the viewfinder. I’ll try to post some photos soon

[Tommy Austin]

Hey guys—here’s a shot of the viewfinder clearance with lens mounted

[Tommy Austin]

De-squeezed still of shot at 8ft from subject

[Tommy Austin]

And at about 1.5 ft

[Raymond Zrike]

Anybody know about the clearance for the 28-55mm and 50-100mm zooms? I didn’t know they had expanded the line of lenses to zooms until right now.