A few weeks ago, I explained how to use the histogram to get a better exposure. And although the default histogram will give you a general idea of an image’s exposure, there’s actually a special histogram that’ll tell you a lot more: the RGB histogram.
Here’s how it works:
If you understand the regular histogram, then the RGB histogram is simple: it shows you the histogram of each individual color channel (red, green, and blue).
The bad thing about the regular histogram is that it lumps all these color channels together, making it hard for you to see if you’re underexposing or overexposing a specific color channel. And, on some cameras, I’ve heard that the regular histogram only shows you the green channel. [Read more…] about How to use the “special” RGB Histogram
In last week’s post, I explained 
Sometimes autofocus can be really annoying. For some shots it’ll focus on the right part of your subject, but then the very next shot it may choose to focus on something far and away into the background.
Have you ever been confused by all the different modes on your camera? Maybe you understand what each one does, but you’re not sure which mode is best for what. Well, here’s a summary of the most commonly used modes for nature photography: 
Every lens has a minimum focusing distance: the closest point where the lens can get a sharp focus. Generally, the longer the focal length of the lens, the greater the minimum focusing distance.