This F Stop Chart shows full stops, 1/2 stops, and 1/3 stops when setting the aperture of digital camera lenses.
You might have seen a new A1 and A2 speed ratings on some of the newer SD and microSD cards. So what do they mean? And when should you take notice of it?
You might have heard recommendations that if you want the fastest and sharpest lenses you should use prime lenses. So what is a prime lens?