Dziadzi wrote:
I took these photos yesterday at my grandson’s high school baseball game. I had my D7100 set up just like Nasim Manusurov recommended. Specifically Shutter Priority and auto-iso. The day was a clear blue sky at about 5p.m. EDT. For whatever reason, the ISO (though I didn’t include all the photos taken) is all over the place. Even the some of the RAW photos show under-exposure. I shoot RAW+JPEG and ususally convert the RAW to JPEG using Photoshop.
So, my question to you guys and gals is: “Am I doing something wrong, or is the camera in need of an adjustment/repair?” I hope that the metadata lends some information to help you help me.
Your thoughts and consideration are appreciated.
I took these photos yesterday at my grandson’s hig... (
show quote)
Of course your ISO is going to be all over the place. You are photographing a very contrasty scene, and metering it with a spot meter. Then you are accepting the results without question.
Exposure meters (and white balance meters) are just plain STUPID. They are made to see the world as an average gray. Point them at black, a dark color, or white, or a light color, and they will try to make it gray. The engineers who programmed the camera were smarter than the meter they designed, but they're not at your scene! So you ALWAYS have to take responsibility for what you get, and make necessary adjustments.
So... If you're spot metering something navy blue, the meter will raise the ISO or open the aperture to try to lighten it. If you're spot metering those white pants, the scene will get darker. The CORRECT exposure for any part of the scene could be measured by metering a Delta-1 Gray Card held in the same light as that part of the scene. The color or brightness of the object does not matter... how it is INTERPRETED is what matters. Again, the meter is STUPID. You aren't, but you do have to be proactive.
Switch to center-weighted metering or matrix metering and see if you don't get more consistent results.
OR, you could use a hand-held incident dome meter and meter the light falling on the batter's box. Set a fixed ISO, fixed aperture, fixed shutter speed, based on that reading. Then test, chimp, adjust, test, chimp, adjust, until you find the right balance for the scene.
In an outdoor scene like that, meter the light where you are, if it's the same as the light on the principal subject. Use the gray card mentioned above.
Average exposure for the "lit" side of a subject in bright sun between 10:00 AM and 2:00 PM standard time is ISO 100 at 1/100 at f/16, or any equivalent of that (like ISO 400 at 1/800 at f/11). The shadows will be about two f/stops darker. At times, you will either have to use fill flash, or let the shadows plug up, or let the highlights burn out. Of course, working in raw will give you additional latitude for adjusting the image in post-production using Lightroom or something similar.
I hope that helps! Give it a go and see what improves.