how to pick a new lens
First get to grips with aperture, which controls how much light reaches the sensor (represented by the f/ number: the smaller it is, the more light’s let in). This affects depth of field, with wide apertures able to create out-of-focus results.
For landscapes, plump for a wide-angle lens (the lower the measurement, the more is in shot). For APS-C cams, go 10-20mm, with 16mm for full-frame. Micro Four Thirds owner? A 7-14mm for you.
For portaits, prime lens optics are of a higher quality than a zoom; 50 and 85mm are classics, while 35mm is a good all-rounder.
Telephoto lenses are the way to go for wildlife and sport (from 100mm to 300mm), while a macro lens is great for snapping fine detail (we like 105mm).