Help me buy a… Portrait lens
Conventional wisdom suggests that an 85mm certainly a great option: the focal length enables a natural working distance, so you’re not crowding your subject and invading their personal space, while still being close enough for you to interact and give direction.
With a crop-sensor camera, focal lengths of around 50mm for APS-C and 40mm for Micro Four Thirds give similar ‘effective’ reach. However, an additional advantage of using
