replace the goggle on a Summaron, need re-cal for focus?

[roundg]

My question is, if I replace the original goggle on my M3 version summaron with another one, does the lens need to be calibrated for the new goggle?

or it's a simple plug and play? any experience?

Thanks in advance.

 

[Erik van Straten]

I think it is an easy job, but maybe a little shimming of the lens is needed. The faster the lens, the more critical the job becomes.

Erik.

 

[roundg]

I think it is an easy job, but maybe a little shimming of the lens is needed. The faster the lens, the more critical the job becomes.

Erik.

Dear Erik,

Thanks for the info. I have checked with DAG, and DON said, it may need adjustment. But it's a simple and not expensive job.