Process lenses vs made for landscape lenses

[Dan Fromm]

Dan, I agree with the point that if we like the lens, no prob. The hidden point in my comments are that I have too many and will want to weed some out. Also, it would be interesting to see what coverage and detail comes thru on 8x10 negatives, although I suspect one would have to take say a farm scene at a great distance so you could see how the houses or barns showed up with magnification. That is why I commented on the 360 Nikkor. I have an 8x10 neg that the buildings are probably 1/4 in tall on the neg, but show up nicely in blowing it up.

Also, since I paid a small fortune for the Cooke, I would like to see if it is really superior to lenses costing 1/4 as much.

Herb, if you're weeding, ask the lenses, don't ask us. Have a shootout. Then you'll know how your lenses compare with each other, not what we think of our lenses. By doing a shootout you'll eliminate two sources of error: differences between your example of a lens and our examples, differences between your preferences and ours.

This kind of question comes up a lot. I never understand why rumor is more informative than direct measurement.

Cheers,

Dan

[Gene McCluney]

I think Process lenses and General Purpose lenses both do fine at infinity, but close up, the Process lenses may have the advantage.

[Ralph Barker]

Process lenses are dangerous to both your photography and your health. All those APO-Nikkors and G-Clarons should be sent to me for proper disposal. (Big wink)

[Dan Fromm]

Ralphie, send money. Lots of money.

[Darryl Baird]

Yes, I'm even more curious now... I'd probably invest in a shutter if there was a worthwhile bonus. I currently just use this in the studio, but it might get packed with the other 'travel' stuff with the added utility.

Darryl, I have not tried my 360mm Apo-Nikkor f9 as a convertible lens, but the Wollensak shutter has 2 aperture scales: First scale, f9, f11, f16, f22, f32, f45, f64
Second scale, f22, f32, f64, f90, f128

I may be wrong, but a quick algebraic calculation in comparing this lens to my triple convertible Protar VII, I calculate this lens should convert from 360mm to 600mm. Now, my curiousity is raised and I need to try it out on my V8.

Jon

[Jon Wilson]

Darryl:

Yes, I'm even more curious now... I'd probably invest in a shutter if there was a worthwhile bonus. I currently just use this in the studio, but it might get packed with the other 'travel' stuff with the added utility.


Quote:
Originally Posted by Jon Wilson
Darryl, I have not tried my 360mm Apo-Nikkor f9 as a convertible lens, but the Wollensak shutter has 2 aperture scales: First scale, f9, f11, f16, f22, f32, f45, f64
Second scale, f22, f32, f64, f90, f128

I may be wrong, but a quick algebraic calculation in comparing this lens to my triple convertible Protar VII, I calculate this lens should convert from 360mm to 600mm. Now, my curiousity is raised and I need to try it out on my V8.

Jon


Darryl,

I tried my 360mm Nikkor which was marked on the betax #4 shutter with a convertible scale (by Steve Grimes) and the gg looked sharp with the 360mm and with the front cell removed focused out to an estimated 600mm. As expected, the 600mm gg image was not as sharp, but I do believe it would be fine for contact prints. I did take a 4x5 shot using both set ups and hope to develop the film this week.

Jon

[Darryl Baird]

Yes, it's not as sharp as a 360 Nikkor, but I'm wondering how it compares to say another 600 mm (either a telephoto design or not). Saying something isn't as sharp as a VERY sharp lens leaves some wiggle room for pretty decent quality. I think I'd like to see a print or a scan with my own eyes. Please let me know your opinion of your film after it's developed. (what film did you shoot?)

cheers

db

Darryl,

I tried my 360mm Nikkor which was marked on the betax #4 shutter with a convertible scale (by Steve Grimes) and the gg looked sharp with the 360mm and with the front cell removed focused out to an estimated 600mm. As expected, the 600mm gg image was not as sharp, but I do believe it would be fine for contact prints. I did take a 4x5 shot using both set ups and hope to develop the film this week.

Jon