DaYi 6x17 - how to mount a lens and calibrate it?

[Ian Grant]

There's a file online somewhere telling you how to adjust the lens helical, I did save it I'll try and find it & email it. There's two small screws inside the helical mount that need adjusting.

The camera's actually made by Gaoersi so the lens helical is the same. When I bought mine the helicals were set specifically for the two lenses before shipping. It's a bit fiddly that's why the chines seller wanted to know exactly what lenses, there was a difference between my 90mm SA & Grandagon, so I had to chose which to use,

File's already sent

Ian

[Jeff Bannow]

I did indeed. It looks like it is a flange to focal distance issue.

Got the file - thanks Ian!

[Jeff Bannow]

Looks like I got it worked out - here's the first roll ....

[michael9793]

The site you refer to at the bottom has instructions on how to mount the lens and register it at infinity. Also LJH does have a point make sure that stupid screw is removed and the lens is flush.

[LJH]

Looks like I got it worked out - here's the first roll ....

What was the problem in the end, Jeff?

[Jeff Bannow]

What was the problem in the end, Jeff?

It was the flange to focal distance for the lens I was trying - it was beyond the range of the lens cone. I had to buy a different 90mm lens that fit to the cone.