[APML] Medium format cameras and films, along with Tak scopes

[Alan Voetsch <critter12952@yahoo.com>]

Hey all,

First of all, I'd like to thank Steve Walters and Phil Jones for the
excellent info they provided on a similiar question last month. Upon
re-reading their information, I think a logical course of action for me
now is to look for a Pentax 6X7. I realize that I probably can't use it
at PF. I'm planning to upgrade the 102 to either a FS-128, or a FSQ-106
next fall or winter. See question below.

If I understand (debatable) what I have read, the following applies to
my situation: Given that I currently have a Tak FS-102, anything larger
than a 645 size will be useless for prime focus with a 2.7" focuser.
Correct?

Then, I would like to ask the following:

1. Film size: is it true that 120 and 220 are the same film except that
220 is longer? 120 has paper backing, why? Are those the only
differences between the 2?

2. Are there any decent film choices at this size (thanks Stuart) other
than E200 or TP?

3. Say I locate a decent Pentax body, what would be a good first lens
to use as a piggyback lens? What else should I look for in a body?
Mirror lock up, anything else?

4. Of the FS-128 & FSQ-106, which is the superior imaging platform for
prime focus? I don't think all 128s have 4" focusers, but I intend to
get one that does. I suspect the answer is the 106, but does the extra
aperture of the 128 carry weight here?

5. Given a 4" focuser, is the Pentax 67 a good choice?

I have had a hard time sometimes distinquishing between what is medium
and what is large format. I took a pen and paper and drew out the
following sized rectangles: 24X36mm, 6X4.5cm, 6X7cm, 6X9cm and 4X5
INCHES. Could be that is the problem; someone decided to use different
formats to measure film sizes. How confusing. 

Anyway, I now believe that all the sizes that are measured in
centimeters are medium format sizes. 4X5 inches is large format,
correct?  

I can't believe how puny 35mm looks on the same page with the larger
sizes. I didn't believe it until I pulled a negative out and determined
that I had drawn the right size box. I've heard it, but now that I can
see it, I believe it.

I know I've covered a lot of ground here, so I really appreciate
everyone's patience.

Thanks,
Alan







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