I do modest enlargements of 5x12, usually in the 3- 5x range and the 210 g claron isn't good enough for me.
Clayton... So the G-Claron you had failed to hold respectable resolution on 15x36 inch prints from 5x12 negs? That's not what I'm looking for. What about the 210mm Apo Symmar? It's advertised coverage is 305mm which is only 20mm shy of the diagonal of 5x12 film. I'm hoping I can get an inch of rise with little or no noticible lower corner degradation on 5x12. Is that a pipe dream? If so then 4x10 is looking increasingly more appealing.
Clayton, here is the exchange I had by email with Zhang Fu Ming (firstname.lastname@example.org) at Shen. N.b. payment was made by wire, they couldn't accept credit cards or paypal. There was a delay of a few weeks because my bank couldn't figure out how to write the name of the Chinese bank or the recipient's name.... even though I had the swift code etc! So, despite modern banking technology, it all came down to how to write the name of the bank or the company on some form there in China, so there was some nutty delay. But it worked out in the end, it just took some patience. Anyway the person at Shen was wonderful, see below.
As you see, my initial email (in bold) was a very simple inquiry.
Thank you for compliment!
A 5x8 reducing back for 410 will cost 180 USD.
----- Original Message -----
From: Keith A. Williams <email@example.com>
Subject: 5x8 back for Shen Hao 4x10
Date: 09-03-14 02:16:26
Can you sell me a 5x8 back for my Shen-Hao 4x10 camera? I
already have a 5x7 back (I like it!), and was considering
modifying that to 5x8, but if they could make one then I'd buy
it happily at a reasonable price.
The shipping cost is 36 USD by EMS;
The bag bellow of 410 is 150 USD;
And the 5x8 reducing back for 410 is 180 USD.
The total amount will be 366 USD.
We have got your payment, your orders will be shipped to you in 3 days.
Concerning lenses, I am thinking (guessing?) that the Bausch & Lomb anastigmat on my poco might well cover 5x12. It seems to overcover 8x10 substantially. Look out for inexpensive decrepit pocos with tele anastigmats! Incidentally the FL of mine is ~11". It converts as well, by removing the front element... but offhand I don't know what that does to the coverage.
Maybe I can try to measure the coverage if there is interest.
Mike: I was banging my head against the wall trying to find lenses to cover 5x12 and this is precisely why I opted for 4x10... I don't have Jim Galli's stash of lenses! The next biggest reason was the cost and availability of film. Turns out I later got a huge supply of 5" roll film, but nevertheless, I think it is undeniable that there are many more options for lenses and film for 4x10. If you need movements I think you will find 5x12 very restricted indeed. And honestly with 4x10 I find that I am using way more shift than I thought I would. I mean, inches of shift.... the aspect ratio seems to make me notice perspective convergence much more strongly.... simply because lines along the long axis are never too far from the frame edges. I can show you examples of what happened when I shot the 4x10 with inadequate coverage whilst trying to tackle this problem.
Keith... thank you for sharing your experiences.
Yes, I may find that I use more movements than I expect to. I just don't recall using that much a zillion years ago when shooting 4x5 but, as you stated, the longer format will likely increase the need for corrections. So... 4x10 continues to look more appealing for my needs.
Regarding film for 5x12: I know I can use the 5" Kodak aerial B&W pan film (Jim Galli does and I'm assuming you do) and I'm pretty sure the color neg film will work too. I believe that stuff has no orange backing which might actually make scanning easier though this would likely cause serious problems trying to print conventionally. However, since I intend to always print digitally (please forgive my blaspheny, fellow APUGers) this isn't a problem. I've posted inquiries about the aerial color neg film but no one seems to have used it for pictorial imagery.
I haven't used the 5" colour neg, but it interests me greatly. Maybe I will get some and play. I have a project that really calls for maskless capture, and so far all I have is the maskless c41 'digibase' stuff which, frankly is not really only soso. And anyway they told me they couldn't supply digibase larger than 120.
Anyway yes I use the 5" aerial panatomic-x and it is very sweet. Been meaning to check it out in rodinal but haven't yet.
Keith... Please post your results if you try the the B&W in Rodinal and/or aerial color neg film. I'm sure I'm not he only one keenly interested.
I've used 5 inch aerial colour neg in my camera with no problems. The film had an orange mask the same as regular C41, I think it was Agfa but would have to check.
Keith thanks for the posting the emails here, yes I dealt with the same guy. I no longer have my email exchange with him. One thing I'd be concerned about is getting the film plane position correct for the holders. Did you send them a holder? My 5x12 was built for S&S holders which they had a set of. The 4x10 holders I have are Canham, do you know what holders your camera was set up for?