Quote Originally Posted by HMG View Post
Personally (and assuming I'd want to invest in the lens), I could live with "infinity-only" focus - but not without a reasonably accurate viewfinder. Assuming a 6x17 viewfinder is commercially available, you'd presumably need an adjustable cold shoe to mount.

Another question I have is how film flatness is maintained. Seems to me you'd need both an effective pressure plate and tension in the film spools.
thank you very much for your advice, since it is a DIY concept and very very low cost production (not massive production too). i think custom modification is acceptable. I using iphone as light meter and view finder(with guess), tripod indicator to make balance. demonstrate photos all without any other auxiliary. of cause if the budget okay, i am willing to fulfil both you mentioned features in final product. thx again