DesertScape,
Gracias,
I see the 6 by 9 active area is actually 56 by 87 (1.55) , however the Ilford multigrade paper is 203 by 254 (1.25)
So far I have been enlarging to fit the 87W on to the 254W with a little border on the sides and a big border on the height.
However i can ( or probably should be, to fit store bought mats ) cropping in the enlarger to fit the 56 H in the 203 H of the paper.
Then I will only be using 70 mm Width of the neg .
I am looking to bid on a lower cost Pentax 67 1:4 135 mm Macro just to try it in comparison to the Optar f/4.7 135 mm, on some Fuji iso 400 color neg.
Thanks for info on the wide angles. First I am making an aluminum lens board for my 90 mm Rodagon to try, as the 135mm to a bit too long on 6by9 for my street and house photos.
6 by 9, Wollensak Optar 135 mm
https://www.box.com/s/xvs1aqjxnm70ogh34xp8
Pentax MX 35 mm, with Rikenon 1:1.4 50 mm
https://www.box.com/s/eknh47tirp7zqb5p6hpm
Both these are scans of the paper prints ( Ilford Multigrade and HP5+, IE 400)