If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Easier way to do exposure step tests?
Are there clear test strips with varying opacity that I can lay over
my paper and expose only once yet be able to calculate correct exposure? If so what are they called and where can I get one... if not, would it be possible to make such a thing? Perhaps by printing on a transparancy using an inkjet? |
#2
|
|||
|
|||
Jed Savage wrote: Are there clear test strips with varying opacity that I can lay over my paper and expose only once yet be able to calculate correct exposure? Correct exposure for what? Making prints? No such thing as "correct exposure" (i.e., a standard exposure.) Base exposure varies from film to film and paper to paper. If so what are they called and where can I get one... if not, would it be possible to make such a thing? Perhaps by printing on a transparancy using an inkjet? I'd suggest a real step wedge for sensitometric applications. Don't really understand all this fascination with doing basic, simple darkroom stuff with a computer and printer. Waste of (much) excess time.. |
#3
|
|||
|
|||
In article ,
(Jed Savage) wrote: Are there clear test strips with varying opacity that I can lay over my paper and expose only once yet be able to calculate correct exposure? If so what are they called and where can I get one... if not, would it be possible to make such a thing? Perhaps by printing on a transparancy using an inkjet? Called a step wedge. Go here http://www.stouffer.net/ Get a 21 step wedge. If your doing real darkroom work as opposed to computer futzing a real step wedge is the best bet. -- 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 |
#4
|
|||
|
|||
In article ,
(Jed Savage) wrote: Are there clear test strips with varying opacity that I can lay over my paper and expose only once yet be able to calculate correct exposure? If so what are they called and where can I get one... if not, would it be possible to make such a thing? Perhaps by printing on a transparancy using an inkjet? Called a step wedge. Go here http://www.stouffer.net/ Get a 21 step wedge. If your doing real darkroom work as opposed to computer futzing a real step wedge is the best bet. -- 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 |
#5
|
|||
|
|||
In article ,
Tom Phillips wrote: I'd suggest a real step wedge for sensitometric applications. Don't really understand all this fascination with doing basic, simple darkroom stuff with a computer and printer. Waste of (much) excess time.. Human Nature? The desire to take a completly working process and completely foobar it with a bunch of inferior suppositions? Or the desire to make something on the cheap and easy that took close to 200 years to nearly perfect? Who knows. -- 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 |
#6
|
|||
|
|||
If you mean lay over a projected print Kodak makes/made a gadget called a
projection print scale, make a test print for 60 seconds through the scale and pick the piece of the wedge that has the best exposure and expose for the indicated time. Kind of a crutch, once you get the hang of things it's probably a waste of time. -- darkroommike ---------- "Jed Savage" wrote in message om... Are there clear test strips with varying opacity that I can lay over my paper and expose only once yet be able to calculate correct exposure? If so what are they called and where can I get one... if not, would it be possible to make such a thing? Perhaps by printing on a transparancy using an inkjet? |
#7
|
|||
|
|||
If you mean lay over a projected print Kodak makes/made a gadget called a
projection print scale, make a test print for 60 seconds through the scale and pick the piece of the wedge that has the best exposure and expose for the indicated time. Kind of a crutch, once you get the hang of things it's probably a waste of time. -- darkroommike ---------- "Jed Savage" wrote in message om... Are there clear test strips with varying opacity that I can lay over my paper and expose only once yet be able to calculate correct exposure? If so what are they called and where can I get one... if not, would it be possible to make such a thing? Perhaps by printing on a transparancy using an inkjet? |
#8
|
|||
|
|||
If you mean lay over a projected print Kodak makes/made a gadget called a
projection print scale, make a test print for 60 seconds through the scale and pick the piece of the wedge that has the best exposure and expose for the indicated time. Kind of a crutch, once you get the hang of things it's probably a waste of time. -- darkroommike ---------- "Jed Savage" wrote in message om... Are there clear test strips with varying opacity that I can lay over my paper and expose only once yet be able to calculate correct exposure? If so what are they called and where can I get one... if not, would it be possible to make such a thing? Perhaps by printing on a transparancy using an inkjet? |
#9
|
|||
|
|||
On Thu, 18 Nov 2004 13:22:40 GMT, Gregory W Blank
wrote: Are there clear test strips with varying opacity that I can lay over my paper and expose only once yet be able to calculate correct exposure? If so what are they called and where can I get one... if not, would it be possible to make such a thing? Perhaps by printing on a transparancy using an inkjet? Delta makes a little sheet of transparant material with a circle cut into wedges with increasing darkness - you lay this over your paper (I think that it is about 4x5 so you can cut your paper into quarters rather than strips, then expose for 1 min, each wedge has a number on it which will tell you the number of seconds of equivalent exposure. It will get you into the right ballpark to begin fine tweaking. |
#10
|
|||
|
|||
On Thu, 18 Nov 2004 13:22:40 GMT, Gregory W Blank
wrote: Are there clear test strips with varying opacity that I can lay over my paper and expose only once yet be able to calculate correct exposure? If so what are they called and where can I get one... if not, would it be possible to make such a thing? Perhaps by printing on a transparancy using an inkjet? Delta makes a little sheet of transparant material with a circle cut into wedges with increasing darkness - you lay this over your paper (I think that it is about 4x5 so you can cut your paper into quarters rather than strips, then expose for 1 min, each wedge has a number on it which will tell you the number of seconds of equivalent exposure. It will get you into the right ballpark to begin fine tweaking. |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
How do I calibrate my photographic process | Alan Smithee | In The Darkroom | 66 | August 31st 04 04:45 PM |
What densities at which zones? | ~BitPump | Large Format Photography Equipment | 24 | August 13th 04 04:15 AM |
Kodak on Variable Film Development: NO! | Michael Scarpitti | In The Darkroom | 276 | August 12th 04 10:42 PM |
Enlarger timer accuracy required for relative paper speed tests | Phil Glaser | In The Darkroom | 24 | June 14th 04 12:20 PM |
Camera's built-in spotmeter as densitometer? | Phil Glaser | In The Darkroom | 22 | March 18th 04 12:41 AM |