>> |
Anonymous
>>84022 Going beyond a certain aperture causes diffraction. This varies depending on the lens.
How do you tell? Well, if someone hasn't done it for you, set up your camera on a tripod with the lens. Find something with a lot of detail, like a really wooly sweater or something. Focus, manually, so that it'll be the same each time. Aperture priority mode, a little bump up in the EV compensation helps when looking at it later. Take a shot at each aperture setting offered, and compare 100% crops. The sharpest one is your sharpest aperture; anything above is affected by diffraction, anything below is affected by some other factors that I don't know what they are.
|