Spot histogram trick on Pentax cameras
I don't know if some of you more experienced folks might be familiar with this, but it's something I just dreamed up today and it's a fudge that does seem to work.
I was looking through some histogram stuff online trying to find out more about the RGB channels that you can see, and how to use them effectively, and I saw that Canons allow you to see crops of the full live view into its own histo. Which I thought was rather neat, especially for metering for selected highlights, shadows etc.
Anyhow, then I realised that actually you can do something similarish and it's unbelievably simple. If you need a histo of a small part of your final image, all you do is make the pic, then use the editing options to make a tiny crop of the pic, and then you can see a histo of just that crop. Which is kind of neat I think, now that I've worked this out I'll definitely use it.
Anyhow, this might be so obvious that it's like teaching grandma to boil eggs but hopefully it might be of some use to someone.
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