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
Are you saying the 90 beats the 80 for 6x7?
If so, in what ways?
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.
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!
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.
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