Quote Originally Posted by trythis View Post
Translation required:

Half frame as in what? I am used to "full frame" meaning 35mm in the digital slr world, and "punk" means good or bad?
6x4.5 is half of 6x9. In the film world, "half-frame camera" usually means a camera with an 18 mm x 24 mm gate that uses 35 mm film. A full frame 35 mm camera has a 24 x 36 gate, also uses 35 mm film. To add to the confusion, 35 mm cine cameras have 18 x 24 gates and when 35 mm still cameras with 24 x 36 gates were used their format was called double frame 35 mm.

In this context, "punk" means bad or poor. Sorry, Pioneer, you got it backwards. Bigger is better, smaller is worse.

Quote Originally Posted by trythis View Post
He was deflated becasue 2x3 looked better than 645?
No, he was deflated because 2x3 (the actual size is 2.25" x 3.25", 57 mm x 82 mm, and some nominal 2x3/6x9 roll holders have gates as short as 78 mm; 6x9 is a lousy metric approximation to 57 x 82, note that some 6x9 folders have gates longer than 82 mm) is twice as big as 645 and looks twice as good as 645 on a lightbox.

Sorry, Pioneer, although there is indeed 2.25" x 3.25" sheet film for most of us 2x3 is a roll film format. 120 film in a roll holder with a nominal 2x3 gate.

[/QUOTE]Then why would 2x3 look "punk" next to 4x5 which is bigger?....confused.[/QUOTE]

4x5 is 4" x 5", is larger than 2x3 (we call 2 1/4 x 3 1/4 2x3 because 2x3 is easier to say and to type).

Since no one has spelled it out in this discussion, nominal 6x6 is in fact 2.25" mm square, nominal 6x7 is 2.25" x 3.25" and nominal 6x12 is 56 x 112. I don't believe there was an ANSI or is an ISO standard for the 6x7 and 6x9 formats, with both formats gate dimensions vary a little from manufacturer to manufacturer. 120 film was invented by Kodak and all of these formats, except, I think, 612, were originally defined in inches.