shutter speed

  1. S

    Lunar Eclipse, which is the slowest shutter speed you can use to keep the moon sharp?

    There is a Lunar Eclipse happening in some areas soon. https://www.timeanddate.com/eclipse/lunar/2022-november-8 I've been looking at calculators to work out the slowest shutter speed for my Canon 200mm F2.8L, 1/2 sec shutter speed is what it recommends for my 90D. When I select a Full Frame...