Issues w/ Leica 90mm APO-Asph Summicron-M Infinity Focus

shoot6x7

Member

Joined

Jun 7, 2005

Messages

99

Location

Upper Canada

Format

35mm RF

• May 19, 2016

• #1

I recall reading somewhere that there were issues with early Apo-Aspheric 90mm Summicron-M and focussing at infinity.

What is the real issue with a lens that does this ? Is the sharpness limited ? Is the lens a dog ?

Your opinions are welcome
Thanks ...

 

cuthbert

Member

Joined

Nov 16, 2014

Messages

822

Format

35mm

• May 19, 2016

• #2

Are you talking about RF or SLR?

RF lense might have focusing problems if serviced and reassembled incorrectly, it's always important to calibrate them with the RF at max and minimum distance.

 

Mackinaw

Member

Joined

Jan 2, 2005

Messages

705

Location

One hour sou

Format

Multi Format

• May 19, 2016

• #3

Their are no issues with the 90mm APO Summicron-M. It's one of the the world's best lenses. If there are focus issues it's, as cuthbert suggests, due to an individual lens being out of adjustment. A CLA will take care of that.

Jim B.