I feel myself lucky to have friends who are genuinely interested in photography. Today Sudeep (Sudeep Sarkar) asked me a very interesting question. About which I had never given thought. Why F numbers are used instead of aperture diameter to standardise measurement of aperture? A very interesting question. So, after …

"Oh, what a weather. Perfect for a day out with the camera." You say to yourself on a fine day with perfect light and weather for photography. You plan out everything very quickly. You select a tourist spot in your city. You arrive the spot, fully geared and start taking photographs. However, soon you realize …