[Konvas] 250mm vs 135mm Jupiter lens test

[Adam Frey]

I did a small test this morning, just to see if it would work, and it  
kinda did. I decided to try and shoot some FUJIFILM 400 Superia X-tra  
135 film (still 35mm film) thru my Konvas. The test was to compare the  
Jupiter 250mm Pentacon Six lens with the Jupiter 135mm OCT18 lens.

Check them out here:
http://adamfrey.com/images/lenses/konvas-1m-135mm-lens.jp2
http://adamfrey.com/images/lenses/konvas-1m-250mm-lens.jp2

They both look pretty good, don't you think? The test was inside my  
son's new "house" that he got for his birthday. It was sitting in the  
shade, and I thought it was the perfect place to test. So I put the  
light-meter inside the little house, with a few objects behind it for  
lighting/color contrasts and grass/dirt between the boards on the  
fence. I only popped the meter where it sat (this wasn't a film test,  
but now I wished I'd have done it to see what kinda latitude the film  
has). It popped at f11.4, so I set the lenses halfway between f11 and  
f16. Anyway, here's two pictures ripped from the negs. I scanned them  
in at 24-bit, 1200x1200dpi and imported the to LiveQuartz 1.8.1, where  
I got them down to a size that was more manageable, and was able to at  
least stay in 16-bit. These are JPEG-2000 images (thus ending in .jp2)

For those that can't read JPEG-2000 or they are too large for you to  
download, after export, I loaded the pics into the GIMP and re- 
exported them as 86% JPEGs (Jpegs are 8-bit ONLY). Every effort was  
made to keep the images as close to their original look as possible,  
while trying to cut them down to a manageable size. And here they are:
http://adamfrey.com/images/lenses/konvas-1m-135mm-lens-test.jpg
http://adamfrey.com/images/lenses/konvas-1m-250mm-lens-test.jpg

Note that these pics weren't doctored in anyway other than resizing -  
and I kinda had an issue with getting the *exact* exposure, since the  
Konvas hiccuped a few times at 8fps (Like an idiot, I did this on it's  
first run and it was a cold morning), and, well, I only had a foot or  
so of raw film to play with (it was a 135 roll of 24 exposures, which  
meant I'd get 48 exposures - but, of course, you have to burn a good  
many frames just to load the film). Anyway, I chose the frames that I  
thought represented the proper exposures...


Enjoy,

Adam Frey
Director/Cinematographer
Crimson Chain Productions
http://crimsonchain.com