Pyrocat-HD exposure compensation

couldabin

Member

Joined

Jun 9, 2005

Messages

170

Location

Kansas

Format

4x5 Format

• Oct 11, 2015

• #1

A few hours after I shot a scene on 4x5 using Ilford FP4 I realized that I overexposed it by about 4 stops (forgot to set the aperture). Any suggestions on how much I should consider reducing the development time in Pyrocat-HD, or the dilution, or both, to salvage the image? Is diluting likely to give me highlights that aren't so blocked up?

Thanks.

 

mrred

Member

Joined

Mar 8, 2009

Messages

1,251

Location

Montreal, Ca

Format

Multi Format

• Oct 11, 2015

• #2

This is where you should give divided development a try. It compensates extremely will. I have shot 4x over on purpose just to see how it went. You should give it a whirl.....

 

markbarendt

Member

Joined

May 18, 2008

Messages

9,422

Location

Beaverton, OR

Format

Multi Format

• Oct 12, 2015

• #3

I'd suggest you shoot another sheet the same way and try normal to see what happens. If needed shoot another and try 1 minus. if needed another minus 2. ...

 

OP

OP

couldabin

Member

Joined

Jun 9, 2005

Messages

170

Location

Kansas

Format

4x5 Format

• Nov 1, 2015

• #4

FWIW -- I went with 200:1 rather than 100:1, and about 75% of the normal time. Came out looking pretty normal.