Quick Question

[JeremyLangford]

Im a little confused over the Digital Truth Developing Time Chart.

http://www.digitaltruth.com/devchart.html

Im trying to look up developing times for HC-110, but all the Dilutions are written as numbes. Such as H, B, D, E, A, or F.

What does this mean?

 

[cmedin]

I ran into that too and never got around to looking it up, so I'm curious as well.

 

[MartinP]

Have a look here, about halfway down the page....

http://www.covingtoninnovations.com/hc110/

 

[rover]

Also, download the data sheet from the Kodak website. The data sheets for the developers and films will give you a starting point for the dilutions and times you will want to use. The Covington dilution H and other places can offer some options. In the end, a little experimentation will allow you to find what you like best. Personally, I have stuck with Dilution B or H and have been satisfied.

 

[JeremyLangford]

So all those letters just represent regular dilutions that I have to look up to find?

Whats the point of that?

 

[clintock]

Maybe Kodak found it easier to print an 'H' in the literature than to print '1:63'.
http://mysite.verizon.net/fowler/photo/hc110.htm

 

[JeremyLangford]

I didnt realize that so much of the mixed developer is water.

When would a very diluted developer be necessary and when would a less diluted developer be necessary?

What is up with the U.S. dilutions vs. the European dilutions?

 

[Anupam]

H is the "unofficial" dilution so I wouldn't expect to find it in any Kodak literature. It's twice as dilute as B. All the rest should be on a HC110 bottle or the Kodak datasheet.

 

[FrankS]

The reason for the difference between US and European suggested dilutions is that this developer is sold in different stock strengths in US and Europe. One is more concentrated than the other. The other has already been diluted a bit.

 

[rogue_designer]

I didnt realize that so much of the mixed developer is water.

When would a very diluted developer be necessary and when would a less diluted developer be necessary?

What is up with the U.S. dilutions vs. the European dilutions?

US vs European is a difference in the syrup.

Very low dilutions (1:1, 1:3, etc.) develop very quickly, and are usually coarser, can be harder to control, and of course, uses up more chemistry. But the look is hard to achieve with other mixes.

Very high dilutions (1:63, 1:100) has a solvent action which can be used with low agitatiton to control contrast (more development of shadows, without blocking highlights - a compensating effect) and have finer accutance. And is also more thrifty on the chemistry. But, of course, takes much longer.

necessary is the wrong word, I think. As it will come down to experimentation, and desired outcome given the shooting circumstances.