View Camera Strobe Exposure

Darryl Roberts · Jun 7, 2020

Adrian Bacon said:
strart with the data sheet: http://www.fomausa.com/pdf/Fomapan_400.pdf

if your strobes have a t.1 time shorter than 1/1000 the film won’t behave the same way as the range is 1/1000 to 1/2 to avoid reciprocity failure. It might be worth looking up the timing for your strobe. That and foma 400 is much better at 160-200. Arista 400 is fomapan 400.

Thank you very much

Darryl Roberts · Jun 7, 2020

TheFlyingCamera said:
So you were shooting it focused at infinity? With strobes in the studio?

Yes. I.'m certain it was the mislabled film as others have proven. Thank you. I received some HP5 from dr5.us yesterday which were pinpoint accurate.

Nokton48 · Jun 7, 2020

You can still derate and use up the 400. You might want to adjust development depending on what you see.

In 4x5 I like HP5+ FP4+ FOMA 100 and FOMA 200. All good choices

And Ilford Commercial Ortho

Darryl Roberts · Jun 7, 2020

Nokton48 said:
You can still derate and use up the 400. You might want to adjust development depending on what you see.

In 4x5 I like HP5+ FP4+ FOMA 100 and FOMA 200. All good choices

And Ilford Commercial Ortho

I'm definitely going to finish the box, I don't do my own developing. I agree with Ilford. I received for perfectly exposed, studio strobe lit portraits developed by dr5.us yesterday.

Bill Burk · Jun 7, 2020

Darryl Roberts said:
SS 60.

Thank you

That might have something to do with it. Can you check the sync? Maybe the X sync is hitting before the shutter has revealed the entire aperture.

Darryl Roberts · Jun 7, 2020

Bill Burk said:
That might have something to do with it. Can you check the sync? Maybe the X sync is hitting before the shutter has revealed the entire aperture.

Thank you but I'm sure it's the mislabeled film.

MattKing · Jun 7, 2020

I don't think "mislabeled" is the correct term for the film.
More like film with specifications that are determined in a slightly unusual way.
For some uses, an EI of 400 is entirely appropriate for that film.

View Camera Strobe Exposure

Darryl Roberts

Darryl Roberts

Nokton48

Darryl Roberts

Bill Burk

Darryl Roberts

MattKing

Moderator

Privacy & Transparency

Privacy & Transparency