Gossen vs. Sekonic meters - don't mix em

[Kirk Keyes]

"you delivered the meter the exact same intensity light"

Quick answer before I go to bed -

I gave the meter light from a tunsten bulb of approximately 2800K color temp. The light then passed through the spectrophotometer which using a diffraction grating, split that 2800K light up into individual wavelengths. Then meter then made readings at the wavelengths indicated in the chart.

Your hypothetical "ULM" will always be at the whim of whatever light source it is reading. SO you need to compare the graph I presented with a graph of a 2800K light source and look for the differences. THe differences will be due to the spectral characteristics of the meter.

[Jeff Conrad]

Kirk,

Great work! Your results are quite similar to the ones I got 20 years
ago for my Minolta Flashmeter III (my meter's response was pretty much
limited to 460–710 nm, but the curve shape was similar).

Bill,

I think what you really want is a match to the film response rather than
uniform response from 400–700 nm. A good match for IR film is shown
in this

graph; of course, both the meter and the camera have 89B filters. A
perfect match to say, Tri-X, would be a bit more difficult because of that
film's rising sensitivity toward the UV end of the spectrum.

Again, although I'd love a perfect match that could be set to every
individual film, I could live with far less as long as the response was
halfway sensible and reasonably consistent among all of my meters. I don't
need perfection to get reasonably good exposures.

I eagerly await the results for the Spot V ...

[Kirk Keyes]

"I eagerly await the results for the Spot V ..."

I finally got the cover off my Spot V meter last night, and it looks like the bulb in it is ok - I get a continuous circuit across it, about 30 ohms, and it looks litke there is about 3+ volts going to it when I press the button. So I'm stumped at this point as to why it doesn't work...

I'll see if I can borrow a friends meter.

Kirk