using a translucent cap for incident metering/expodisk

[ibcrewin]

I found that a translucent vitamin water bottle cap fits perfectly over the 35mm skopar lens. I know you can use frosted pringles cap for WB on digital from searching a few forums, but I also hear there is a way to use it as an incident meter.

How's that work? Meter off the cap and open 1 stop? 1/2 stop? Also, poland spring bottles (1 gallon) make great expodisks.

 

[charjohncarter]

You better calibrate it. I think you mean 'meter though' not 'meter off.' Maybe you don't?

 

[ibcrewin]

Right!.. Meter through..

I tried it with the Rebel XT and it worked good enough. I have a roll in the bessa r right now I am trying it with. (exp tmx 400) I'll probably soup that later this week with my expired HC-110. :wink:

 

[Sparrow]

Under consistent lighting take a meter reading off a grey card using the camera’s ttl meter then put the your vitamin cap on the lens and turn the camera through 180° and take a second reading, how much the two differ would give you some idea.

 

[charjohncarter]

Sparrow has been thinking. Excellent, Sparrow. Here is a page from 'Existing-Light Photography' The Kodak Workshop Series, it should help, too. If this violates the copyright laws, just delete:

edit, it is difficult to read, but if you 'save as' to your desktop, you can print or read with an editing program.

 

[ibcrewin]

cool stuff.. I'm going to try a few different things. See which ones work best. Thanks again!

 

[BillBingham2]

I grabbed a cap like this from an old Sony FD-91 I sold a few months ago. It reminded me of a cap I was on a Leica CL years back. Some photographer had put a light meter dome (like from a Norwood Director) into the center of his cap to get incident readings. Because it was a spot meter he said it worked well.

B2 (;->

 

[FrankS]

Try a white foam coffee cup inverted over the lens. Empty it first.

 

[ibcrewin]

Frank, what happened to the Jerry Garcia avatar?

 

[Roger Hicks]

You better calibrate it. I think you mean 'meter though' not 'meter off.' Maybe you don't?

Disputable. The old name for incident light metering was the 'artificial highlight method', after all. You're metering off a transilluminated highlight...

Pure pedantry, but worth a few moments' idle thought.

Cheers,

Roger

 

[Sparrow]

And then of course there is the K-factor to consider

 

[charjohncarter]

Quit droll Roger, these little tidbits are useful at cocktail parties.

 

[Bob Michaels]

brain power. Some lightmeters can supplement it. None can replace it.

 

[BillBingham2]

Funny.......

Funny.......

And then of course there is the K-factor to consider

Funny, I thought Quarks would come into the equation some where. Perhaps I should have some more Lepton Tea......

B2 (;->