Contents:1. Settings according to iris type
|Very bright Blue/Grey iris||1/80||f5.6||800|
|Bright Blue/Grey iris||1/60||f5.6||800|
|Medium Blue/Mixed/Light brown||1/60||f5.0||800|
|Mixed/Light brown iris||1/50||f5.0||800|
|Dark brown iris||1/40||f2.8 à f5.0||1600|
If in doubt about which settings to use, always start with the settings indicated for blue/mixed/light brown irises. Leave these default settings on the camera. Take a first picture and check on the camera screen to see if the picture is correct, too bright or too dark. This will give you clues to adjust the speed and aperture according to your needs. After a while, you will instinctively be able to adjust it.
Manual mode is the best way to take the most successful iris pictures, but it can be a little more complicated at first.
Change only the speed (1/80 for light irises to 1/40 for dark irises). This is sufficient for the majority of irises. If a speed at 1/40 remains too dark, change the aperture to f5 or f4, etc.
Practice, practice, practice ;)