SCOTLAND 7 - Exposure

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Comments

[Jarad]

Thanks for the great to-the-point post. What are some of the differences between using a light meter outside as apposed to inside? Thanks!

[Jem Schofield]

Jared,

Mainly that you have to be more aware of latitude and stops of difference outside as it is less controllable.

-Jem

[David Cooper]

One of the things I have noticed with my meter is that the correct f stop for my 24-70mm does not equal the proper stop when I switch out to my 70-200mm. I would say there is at least 1/2 stop loss of light for the longer lens. That's the great thing about a histogram or the display since you can visually see the loss of light through the longer zoom. This was never a problem with my older primes. I always open up from the meter with my 70-200 even though we should trust the meter. Not sure why but I assume it has to due with the huge amount of glass in those big lenses.

[Jem Schofield]

David,

It's a good point. I even see a change when going from the wide end of my 24 to the long end at 105. You have to learn your camera system and your lenses. Additionally, when using certain gamma settings (like Canon Log, S-Log and Log-C), things are mapped so differently that you need to calibrate your meter to compensate.

-Jem