Exposure and the Histagram

The book I read to research this post was Exposure and Understanding the Histagram by Andrew S Gibson which is a very good book that I bought from kindle. This book is around 60 pages so is fairly short. This book is part of a series of e-books on exposure and the various aspects associated with it and digital photography. The histagram shows your various light levels in a photo and this book looks at both adobe photoshop and photoshop lightroom. Many photographers only photo-editing is adjusting the light levels and you can achieve a lot with a pic in this way. In particular you should look at the curves slope which generally should tend to be gradual with out sharp breaks. You should bear in mind a photo is normally made up of red, green and blue and where these are all combined in equal measure makes white. You may have to adjust an individual color especially where it is an old photo that has decayed. Also you may have to adjust an individual color where it has either been under or over exposed. It also has some info on using raw mode which you generally use with DSLR cameras and provides more options especially with Photoshop. I did enjoy this book and do recommend it.