Tri -X development question

[ohnri]

Advertisement (gone after registration)

If I expose Tri-X at 320 do I need to tell the lab or is standard development preferred?

 

Thanks,

 

Bill

[mdozier]

fwiw, my opinion is to tell the lab.

By my reckoning 320 is almost 1/2 stop off and it could matter depending on what and where you were shooting. If I were processing it myself I would adjust even though it's minor.

 

Just my opinion.

 

m

[Xmas]

Hi

 

Pre 1961 Tri-x was 200 ISO, then they changed the rules and made it 400 ISO, cause most people had photo electric meters rather than sunny side f/16 tables or slide rules.

 

I always use 1/3 of a stop over I like shadow details.

 

Noe

[treeplanter]

If I expose Tri-X at 320 do I need to tell the lab or is standard development preferred?

 

Don't worry about it. I've exposed Tri-X at 320 or 400 for years and would be hard pressed to tell the difference between the two (I process at home using either D-76 or Xtol). There's just too many other variables that come into play to worry about 1/2 of an F-stop.

 

Jim B.

[tobey bilek]

I do not believe a lab will adjust even if you tell them.

 

In my darkroom, I would reduce 10%. 20% for EI200.

 

Tri x is beautiful at 200 and minus 20%.

[ohnri]

Thanks everyone! Lots of useful information.

 

I'll try standard development unless I go for even more overexposure.

 

Great forum!

 

Best,

 

Bill

[BJDrew]

Advertisement (gone after registration)

I found it depends heavily on your developer, the scene contrast of your subject, the enlarger (or scanner) you use, and/or the paper you print on.

 

In a standard scene, D76 1:1, the enlarger I use and 11x14 ilford warmtone RC paper, I have to shoot at ISO 200 and normal development time to get a good print with a #2 filter. With HC110 (, its ISO 320. With a lower contrast scene, develop +20% time works.

 

You'll find what works for you. If you are very specifix with your lab and comment like 'hey... the negs were a little contrasty last time can you give me 20% less time than your normal dev? They usually comply.

[stunsworth]

As others have said, there are so many variables that you probably won't notice over an entire roll.

 

The only other suggestion would be to consider developing at home - it's not difficult and gives you the flexibility to alter exposure and development as required.

 

After saying that I exposed Tri-X at 400, and developed in Xtol 1:3 and was very pleased with the results.