90mm Enlarging Lens

[Bob Carnie]

I use the apo rodagon 90 for all 6x7 and 6x9 enlarging work. I bought it new and had no problem finding one. That was a couple of years ago.
It really does beat the apo 80 coverage .and being f4 is nice

[davetravis]

Hi Bob,
Are you saying the 90 beats the 80 for 6x7?
If so, in what ways?
Just curious.
Thanks.

[Bob Carnie]

hi Dave

It seems that the 90 gives me a little bit of play on the easal surface when using 6x7 and 6x9 negatives.
With an 80 I always found that the very edges seemed to be *clipped* and I was never happy or confident that the edges were perfectly sharp.
With the 90 the coverage seems to be better and I am happy with the sharpness.
I use the 80 for all 6x6 negs with confidence but I do put in the 90 for the larger format.
Since the starting apeture for both lenses are the same and my enlarger height does not change dramatically going to the 90 , I prefer the longer lens.

[davetravis]

Thanks Bob,
I just got the 80mm APO on ebay, so I guess I'm stuck!
And just wanted to see if my new fancy signature works!

[David A. Goldfarb]

I also use the 90 Apo-Rodagon for MF (6x6 through 6x9), and I've been happy with it. I tend not to print very big that often, so I haven't had a problem with clipping on 6x9, and I've got enough column to use it for 6x6.