Lens for 6x7

I own a Mamiya RB67. I have not used it yet, but i plan to in the next few moths.
I was looking through my drawers, and i see i have a Rodagon 80mm f/4.0 lens. Doing a search...80mm seems to be mentioned quite often as a good length for 6x7.....but is it.?
(i also have 50 and 135mm)
For you guys that DO print 6x7, what Lens do you like to use.?
I have the Beseler 45 if that makes a difference.
Thank You

A 90mm lens is the recommended focal length for 6x7 negatives (which are actually a bit smaller than that).
But my understanding is that the Rodagon 80mm f/4 is designed to work well with 6x7 negatives. Certainly mine does.
I do have 90mm and 105mm alternatives available though, and they work well too.

The focal length for 6x7 varies with the design of the lens, and thus the manufacturer and even of different designs within the same manufacturer. Check the spec sheet for the lens you have or want to use..

CMoore said:

I own a Mamiya RB67. I have not used it yet, but i plan to in the next few moths.
I was looking through my drawers, and i see i have a Rodagon 80mm f/4.0 lens. Doing a search...80mm seems to be mentioned quite often as a good length for 6x7.....but is it.?
(i also have 50 and 135mm)
For you guys that DO print 6x7, what Lens do you like to use.?
I have the Beseler 45 if that makes a difference.
Thank You

Click to expand...

Rodagon list it for max 6x7 negatives. http://www.rodenstock-photo.com/Archiv/e_Rodenstock_Printing_CCD_43-62__8230.pdf

I use my Durst 80mm for 6x7 negatives and it works perfectly. I.e. I can't see any vignetting or softness towards the corners.

I use a 85mm Nikkor on a DeVere504 and works very good.

I print RA4 RZ67 negs with an Apo Rodagon-N on a Beseler 45, so it is a combo that should work, no problem.

OK.....looks like my original search jibes with what you guys are using.
Thanks Again

The Rodenstock literature states that the Rodagon is a 6 element design, the 80 f4 covers 6x7 and the recommended magnification is range 2x - 10x.

CMoore said:

OK.....looks like my original search jibes with what you guys are using.
Thanks Again

Click to expand...

Probably ought to make a print then report back here so it lives in perpetuity.

Make sure the image circle is aligned with the negative so one corner is not out of the sharp field. Many ways to do it. One is to put the laser under the lens and when it reflects a concentric bullseye pattern to the laser, it is directly under the lens. Now project your negative carrier and draw it on the baseboard. Make an x across each diagonal and they should meet where the laser point was. If you have a 4x5 enlarger, then you can just project the entire image circle without a negative carrier. Draw out the circle, then put the 6x7 carrier in and note the corners, see that they are all the same distance from the edge of the circle.