I know I have uploaded this somewhere else, but this pic is inserted here to suggest to people making their own cameras that they make the front standard the same size as a Sinar, so that should a Sinar shutter comes along at a reasonable price it can be mounted - The advantage here is that cheap un-shuttered lenses can be used and if your shutters are questionable the Sinar one will give consistency

jbaphoto120206d1389.jpg jbaphoto120206d1390.jpg

More info on http://www.jbaphoto.com.au/johnaustinblog.html

I know this will make the front standard big, but with careful design I believe it can be made to work

John

John