histogram question

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Joined: 03/17/08
Posts: 1391
histogram question

I'm just starting to use the histogram to check my exposure and I have a quick question. I have read a whole bunch of articles and watched a couple videos on youtube and so far I have not found the answer. I am going to continue searching tomorrow but I am too tired to continue tonight. I figured you ladies probably already know the answer and maybe somebody would be able to save me more searching. Smile

Okay, so I understand the left to right bit. What does it mean if the info spikes upward and off the chart at the top? Is that bad? If so how do you fix it? TIA for any help you can give me!

coolmama72's picture
Joined: 10/20/01
Posts: 8185

I'm not great with histograms ... but if you're off the charts, you're losing data. It's an exposure issue, but it's also something can be recovered in ACR. I suck at explaining it ... there are some great articles about it, but I didn't bookmark any of the ones I've read. I'll see if I can find a good one that has helped me.

ETA links

I just read this one recently, thought it was informative
http://www.dpreview.com/learn/?/Glossary/Digital_Imaging/Histogram_01.htm

And I'm really tired, so I didn't read too deep into this one just now, but it seems useful (but might not answer your specific question)
http://www.digital-slr-guide.com/how-to-read-a-histogram.html

You owe us a hello on the scrapbooking board!

Joined: 03/17/08
Posts: 1391

"coolmama72" wrote:

I'm not great with histograms ... but if you're off the charts, you're losing data. It's an exposure issue, but it's also something can be recovered in ACR. I suck at explaining it ... there are some great articles about it, but I didn't bookmark any of the ones I've read. I'll see if I can find a good one that has helped me.

ETA links

I just read this one recently, thought it was informative
http://www.dpreview.com/learn/?/Glossary/Digital_Imaging/Histogram_01.htm

And I'm really tired, so I didn't read too deep into this one just now, but it seems useful (but might not answer your specific question)
http://www.digital-slr-guide.com/how-to-read-a-histogram.html

You owe us a hello on the scrapbooking board!

Thanks, Gwen! I will check those out while Lindsay naps today.

And I know! I was just thinking about that a few days ago. I totally have been a slacker lately and have nothing to post. But I will pop in and say hi, I promise! Smile

Joined: 10/26/01
Posts: 3413

Gwen, those are some GREAT links! TFS!

Best,
GiGi