Methods and subtleties of clip testing
New to this forum, but quite a bit of experience in most areas of black and white, all formats, many processes.
And yet I have never in all my days done a clip test. What methods do people use for clip tests in 35mm? And for what reasons?
My most pressing concern is whether or not processing a small amount of 35mm film, in a reel (taped in or otherwise secured), will yield a result that is exactly the same as if a full roll were processed in the same chemistry at the same dilution for the same time. Do people do clip tests for precise tests like effective ISO, curves, etc?
Will the agitation currents might affect the film differently? Or will the developer oxidise/deplete faster or slower because of the smaller amount of film?