Sorry Frank, you just don't seem to know how to ask sensible
questions.

But you sometimes make a mildly amusing sideshow out of your
general ignorance and social ineptitude, so do carry on
while I settle down with a box of popcorn... again :-)

PS: do learn how to edit and post articles on Usenet,
there's a good chap.

The original question:
"High end DSLR's costing many thousands of dollars have large CMOS
areas (24x36mm) and feature 100% viewfinders demanded by Pros

Yet, if you personally want to make borderless prints of them
using your high end Inkjet Printer you can only buy paper 4"x6"
paper.

You can buy many sizes of Inkjet Paper like 8x10, 8.5x11 or A4
(210x297mm) but you cannot buy 8x12 borderless paper.

Does that seem reasonable?"

I cannot revise the original premise because I would have to change
the issue of suppliers matching 2:3 camera to 8x12 paper.

Good and interesting information. I didn't know that of the Epson
Stylus Photo R1800. If so it would be a large omission on the part of
Epson since I print borderless 4x6's using their paper to match my 2:3
digital size.
On the other hand Epson just goofed by, with coordination with
Photoshop the new Epson R1800/Photoshop drivers they now distribute
don't work correctly. If you contact them they will give you a work
around.

Why would it not print 8x12 borderless?  That's a driver
configuration, not a hardware limit.

I've never printed anything at 8x12, but it is one of
the paper size options for the Gutenprint drivers used
by CUPS on Linux.

Learn how to cut mats dude.

I guess he is afraid of paper cutters. Of course, one does have the quite
valid argument that a paper cutter never produces EXACTLY 8x12
paper. But that only matters if you want a stack of prints. In which case,
I actually AGREE WITH HIM that 8x12 is needed!

Doug McDonald

Jürgen. Your statement above "What on earth does the viewfinder of any
camera have to do with printing something on paper?" stunned me and
sent me reeling.
Before shooting a single planned image,for  many years using 6x9cm or
4x5 inch cameras, the size and proportions of the finished sheet of
paper was what dictated was going to be on the film. I used standard
masks, custom masks or writing lines with a china marker on the ground
glass to get my compositions exactly as I wanted them to be.
When I moved primarily to 35mm as those cameras began to improve I
used a Nikon F3 because of the ability of its viewfinder to cover
100%.
I carefully scribed lines directly on the ground glass to achieve the
4:5 ratio in order to use paper with those proportions exactly.
Don't misunderstand. I have often included lots of extra area before
shooting and cropped using a large variety of different ratios-
sometimes even different shapes. But when I wanted to exactly compose
a planned to print composition I knew exactly where each element fit
in advance and there wasn't a single grain of film wasted.
If you ever looked through the fine older fine quality Linhof Technica
magazines displaying their large format prints, I doubt there was not
a single picture taken without first considering the ratio and size of
the sheet of paper.
Nowadays I shoot Nikon Digital and strictly for fun and pleasure. I
can squeeze off hundreds of images in a day and sometimes even get a
really good one worth enlarging.