Fond Memories

[The Vulcan]

"Reciprocity Failure" is now a lost "art" in the digital world.

I loved the surreal and unpredictable colours that this phenomenon could create.

Rollei 6006 - 80mm lens - Velvia 50ASA - scanned slides.

[Who, me ?]

I love picture on the right

Rain , night, lights, colors ....all is great to me

[astral]

"Reciprocity Failure" is now a lost "art" in the digital world

I think you need to explain what you mean.

To me "Reciprocity Failure" is when film fails to follow the rule of

Double the exposure/half the aperture...........

usually at the extremes of exposure.

You are saying it is an art?????????

PS the photos are excellent.

[The Vulcan]

Reciprocity Failure

Occurs during exposures exceeding one second. Essentially what this means is that the emulsion, having been designed for high-speed exposures, fails to respond in its usual proportions to the amount of light it is exposed to. Every emulsion responds differently to long exposures. Color emulsions will experience uncorrectible color shifts as reciprocity fails at different rates in the various color layers.

Of course, digital does not have this "problem"

I refer to it as a lost art simply because I deliberately chose subjects (obviously dimly lit or night-time) and slow transparency film (Velvia) to capitalise on this colour shift. Sometimes it came off, other times it flunked. Perhaps "art" should read "luck"

It was actually correctable by adjusting shutter speeds and/or the use of filters - I didn't want it "corrected"

Hope this explains thing a little better.

Here's another example

Edited April 5, 2008 by The Vulcan

[skippybangkok]

I miss Velvia ! . Nothing like shooting film to get the Dynamic Range.