Photoshop Tutorial
Calibrating Your Camera
Verifying ISO
Before you head out and shoot that big
gig with your new camera, you should first check to see that it is calibrated
correctly. Some cameras
underexpose and some cameras overexpose. How do you know that when your
camera is set to 100 ISO that it’s really exposing for 100 ISO?
This simple test will verify that your camera is recording exposure properly.
Things you need:
- DSLR
- Greycard
- Flashmeter
- Light (studio, sunlight....)
First thing you need todo is capture an image of a greycard. For this example we will use a studio flash bounced into an umbrella.
Using your flashmeter set the ISO to 100
(or whatever your cameras lowest ISO is). We want a flash output of F8
reading on the greycard. Get this as accurate as possible, not F8.3 or
F5.62. Keep
reading....
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