photonium

If focus needs to be adjusted , the lens element needs to move, so lens can readjust 120 times per second? I thought camera can only evaluate focus, but is limited by lens autofocus motor.  Don't ...

Thanks everyone for your considerations, I do agree 15-85mm is probably a better lens for me than 17-55mm, but I have not ruled out 18-35mm yet. What keeps me thinking is if the very small increase ...

Thanks, I have seen very cheap tripods going up to eye height as light as 0.7 kg/1.5lb. Not sure what is going to happen though when you put a sigma 18-35 on them in windy mountain conditions. I ...

Hello, I am beginner and looking for advice for buying generic purpose lens. If I want to go on a hike with my new canon SL3/250D camera and pack as light as possible, which of these options is ...