Market for LF gear?

In article ,
(Scott Norwood) wrote:

In article , jjs X-No-Archive: yes
wrote:

Good point. So we should try to find out how many 4x5" films have been
processed. If we focus upon color then we might have a good idea. No?

What about those of us who don't shoot color in large format?
There's no way I could afford to shoot 4x5 Ektachrome, given the
costs of processing. B&W is much more reasonable (and I can develop
it myself in my bathtub).

Nice, really nice mental imagery there ;-)

--
LF Website @ http://members.verizon.net/~gregoryblank

"To announce that there must be no criticism of the President,
or that we are to stand by the President, right or wrong,
is not only unpatriotic and servile, but is morally treasonable
to the American public."--Theodore Roosevelt, May 7, 1918

In article ,
(Scott Norwood) wrote:

In article , jjs X-No-Archive: yes
wrote:

Good point. So we should try to find out how many 4x5" films have been
processed. If we focus upon color then we might have a good idea. No?

What about those of us who don't shoot color in large format?
There's no way I could afford to shoot 4x5 Ektachrome, given the
costs of processing. B&W is much more reasonable (and I can develop
it myself in my bathtub).

Nice, really nice mental imagery there ;-)

--
LF Website @ http://members.verizon.net/~gregoryblank

"To announce that there must be no criticism of the President,
or that we are to stand by the President, right or wrong,
is not only unpatriotic and servile, but is morally treasonable
to the American public."--Theodore Roosevelt, May 7, 1918

On Mon, 4 Apr 2005 20:46:16 -0500, "jjs" wrote:

"rafe bustin"

A 4x5 or 8x10" monochrome scanning back for LF
could be made by strapping a CIS flatbed scanner
to the back, and disabling the LED bars on top
of the CIS.

And you know it's been done. The optics regarding the aerial image and the
length of exposure remain issues.


Please define "aerial image." I am saying that
either a CCD or CIS sensor could be waved across
the film plane and capture the image that was
on the ground glass.

I presume you understand the difference between
CIS and CCD scanners.

It's important. CIS bars have no traditional
lens, and sense monochrome only. CIS bars 8"
long are commonplace and used in the cheapest
flatbed scanners. Up to 2400 dpi apparently.
Color scanners use CIS bars with RGB LED
arrays.

CCDs are monolithic silicon. The longest
(and probably most expensive) I've seen is
Kodak's KLI-14403, which is 3" and 14400
x3 pixels. In a scanner, CCDs are almost
always coupled with lens and mirror(s).
Typical consumer flatbed scanners have
CCD chips about 1.25" long.


rafe b.
http://www.terrapinphoto.com

On Mon, 4 Apr 2005 20:46:16 -0500, "jjs" wrote:

"rafe bustin"

A 4x5 or 8x10" monochrome scanning back for LF
could be made by strapping a CIS flatbed scanner
to the back, and disabling the LED bars on top
of the CIS.

And you know it's been done. The optics regarding the aerial image and the
length of exposure remain issues.


Please define "aerial image." I am saying that
either a CCD or CIS sensor could be waved across
the film plane and capture the image that was
on the ground glass.

I presume you understand the difference between
CIS and CCD scanners.

It's important. CIS bars have no traditional
lens, and sense monochrome only. CIS bars 8"
long are commonplace and used in the cheapest
flatbed scanners. Up to 2400 dpi apparently.
Color scanners use CIS bars with RGB LED
arrays.

CCDs are monolithic silicon. The longest
(and probably most expensive) I've seen is
Kodak's KLI-14403, which is 3" and 14400
x3 pixels. In a scanner, CCDs are almost
always coupled with lens and mirror(s).
Typical consumer flatbed scanners have
CCD chips about 1.25" long.


rafe b.
http://www.terrapinphoto.com

jjs wrote:

: "Sander Vesik" wrote in message
: ...

: Well, realistcly, so will be estimating it based on film sales - after
: all,
: you don't know the relative numbers of people shooting 5 sheets per year
: vs 5 sheets per month or more. Never mind film distributed to channel but
: not sold, spoilage etc.

: Good point. So we should try to find out how many 4x5" films have been
: processed. If we focus upon color then we might have a good idea. No?

Not really. A lot of LF photographers don't shoot color film.

--




Keep working millions on welfare depend on you
-------------------

jjs wrote:

: "Sander Vesik" wrote in message
: ...

: Well, realistcly, so will be estimating it based on film sales - after
: all,
: you don't know the relative numbers of people shooting 5 sheets per year
: vs 5 sheets per month or more. Never mind film distributed to channel but
: not sold, spoilage etc.

: Good point. So we should try to find out how many 4x5" films have been
: processed. If we focus upon color then we might have a good idea. No?

Not really. A lot of LF photographers don't shoot color film.

--




Keep working millions on welfare depend on you
-------------------

In article ,
rafe bustin wrote:

On Mon, 4 Apr 2005 20:46:16 -0500, "jjs" wrote:


I presume you understand the difference between
CIS and CCD scanners.

It's important. CIS bars have no traditional
lens, and sense monochrome only. CIS bars 8"
long are commonplace and used in the cheapest
flatbed scanners. Up to 2400 dpi apparently.
Color scanners use CIS bars with RGB LED
arrays.

CCDs are monolithic silicon. The longest
(and probably most expensive) I've seen is
Kodak's KLI-14403, which is 3" and 14400
x3 pixels. In a scanner, CCDs are almost
always coupled with lens and mirror(s).
Typical consumer flatbed scanners have
CCD chips about 1.25" long.

So your idea is to use the CIS bars, in a 3 set to obtain
a RGB image,....wouldn't that be a rather large piece
of hardware to carry?

--
LF Website @ http://members.verizon.net/~gregoryblank

"To announce that there must be no criticism of the President,
or that we are to stand by the President, right or wrong,
is not only unpatriotic and servile, but is morally treasonable
to the American public."--Theodore Roosevelt, May 7, 1918

In article ,
rafe bustin wrote:

On Mon, 4 Apr 2005 20:46:16 -0500, "jjs" wrote:


I presume you understand the difference between
CIS and CCD scanners.

It's important. CIS bars have no traditional
lens, and sense monochrome only. CIS bars 8"
long are commonplace and used in the cheapest
flatbed scanners. Up to 2400 dpi apparently.
Color scanners use CIS bars with RGB LED
arrays.

CCDs are monolithic silicon. The longest
(and probably most expensive) I've seen is
Kodak's KLI-14403, which is 3" and 14400
x3 pixels. In a scanner, CCDs are almost
always coupled with lens and mirror(s).
Typical consumer flatbed scanners have
CCD chips about 1.25" long.

So your idea is to use the CIS bars, in a 3 set to obtain
a RGB image,....wouldn't that be a rather large piece
of hardware to carry?

--
LF Website @ http://members.verizon.net/~gregoryblank

"To announce that there must be no criticism of the President,
or that we are to stand by the President, right or wrong,
is not only unpatriotic and servile, but is morally treasonable
to the American public."--Theodore Roosevelt, May 7, 1918

In article ,
Frank Pittel wrote:

jjs wrote:

: "Sander Vesik" wrote in message
: ...

: Well, realistcly, so will be estimating it based on film sales - after
: all,
: you don't know the relative numbers of people shooting 5 sheets per year
: vs 5 sheets per month or more. Never mind film distributed to channel but
: not sold, spoilage etc.

: Good point. So we should try to find out how many 4x5" films have been
: processed. If we focus upon color then we might have a good idea. No?

Not really. A lot of LF photographers don't shoot color film.

Not only that, but the ones that do, shoot a lot more than others. You
also have students that use LF cameras supplied from schools, are having
film processed.

--
LF Website @ http://members.verizon.net/~gregoryblank

"To announce that there must be no criticism of the President,
or that we are to stand by the President, right or wrong,
is not only unpatriotic and servile, but is morally treasonable
to the American public."--Theodore Roosevelt, May 7, 1918

In article ,
Frank Pittel wrote:

jjs wrote:

: "Sander Vesik" wrote in message
: ...

: Well, realistcly, so will be estimating it based on film sales - after
: all,
: you don't know the relative numbers of people shooting 5 sheets per year
: vs 5 sheets per month or more. Never mind film distributed to channel but
: not sold, spoilage etc.

: Good point. So we should try to find out how many 4x5" films have been
: processed. If we focus upon color then we might have a good idea. No?

Not really. A lot of LF photographers don't shoot color film.

Not only that, but the ones that do, shoot a lot more than others. You
also have students that use LF cameras supplied from schools, are having
film processed.

--
LF Website @ http://members.verizon.net/~gregoryblank

"To announce that there must be no criticism of the President,
or that we are to stand by the President, right or wrong,
is not only unpatriotic and servile, but is morally treasonable
to the American public."--Theodore Roosevelt, May 7, 1918