reinhard_blanck

<p>there are viewfinder masks for the 127mm and the 150mm (metal, clip-on). they are 6x9 with little indexes for 6x7. but they are hard to find. a part the 75mm external viewfinders have several frames, if you have a ground glass, just compare and find out, wich one corresponds. and yes, the lenses are not compatible at all.</p>

<p>I do have a lot of expired film, polaroid and fuji. these are my personal findings, no scientific research in no way and no warranty. non-refrigerated film seems to be good for about 3 years beyond the date. after that date it's a game or a bet. I had both, fuji and polaroid film which was usable even after 10 years beyond the date, not as new, but usable. but I also had fuji film which was completely dead and dry after 5 years and polaroid which was really bad after 5 years beyond the date. sx and 600 polaroid film seems to be more fragile than pack film.<br> if the pack film has been refrigerated from the beginning and you can be somewhat sure about it, no problem so far for about 10 years. I have a big batch of fuji from 2005 which is fine (but you feel it touches the limits) and polaroid from 2006 to 2009 which is still o.k.<br> forget about impossible film. all of my old film was just bad up to now. but I do have some 8x10 film in the fridge and a bigger batch of second choice sx and 600 film from last year to test this winter...</p>

<blockquote> <p>Just be sure that you don't freeze any of it--that destroys the chemistry. Refrigeration is fine, and will extend the lifespan.</p> </blockquote> <p>that was for polaroid film, it's not true for fuji film. I tested freezing fp-100c and the result was fine. maybe there is a slight red tint, it disappeared on my prints after a day or two. we had several tests on a french forum http://www.polaroid-passion.com/forum/viewtopic.php?t=17430 <br /> another member tried fp-3000b. fine as well, maybe you loose a bit of sensivity, but it's just a little bit. nothing compared to not having film any more. so I will freeze some film before it's over. and yes, refrigerating extends lifespan. </p>

<p>the first link was a mamiya 4.5x6 (645) back, pretty useless as the rest of the format is wasted. the second was a good one. they are somewhat pricey, although the hype is over, fb-3000b film has ended and the future of fb-100c is uncertain. if you have a project, it's still worth the expenses. the fuji film is fantastic and it's self-terminating. no need of a timer. and even if fuji stops fp-100c you can stock it for about 10 years. so go for it. good luck. </p>

<p>it's not just that simple, but it's possible. have a look at this<br /> http://www.instantphoto.eu/diy/uni_600se.htm</p>

<p>as they are extreme wide angles, the 50mm are prone to flare. there are nearly no shades in the photo, couldn't it just be a very strong hazy sun from the right? try the lens in a photo with the sun in your back.</p>

<p>o.k. that makes more sense. I have one but saw little use on my universal. so now I know how to sell it best. thanks.</p>

<p>afaik it was made for the universal, to use with the spacers.</p>