Hello all. Quick question on IS.
So obviously I will use IS if I'm photographing something while standing on land and the light is low and my shutter speed is low. However, I shoot with a 70-200 2.8 ii while swimming in the ocean. I photograph waves, so it is always turbulent when I'm shooting. It's rare that I can be even close to still.
Since I got this lens, I've always shot with IS on in the water as I thought it would A) Help counter my movement in the water and B) Create easier viewing through the viewfinder due to the stabilization.
IS definitely helps with B, and I want to believe it helps with A but thats my question here. Is swimming in a turbulent ocean too much movement for the IS to handle? Am I possibly hurting the image sharpness? I do get sharp images but I'd say I get just as many "unsharp" images as I do sharp. Unsharp meaning I can clearly see where the lens focused (foreground and background are strongly blurred), but the part thats "in focus" is weirdly not sharp. Doesn't look like a crazy motion blur, but its definitely not sharp.
Now there is a lot that can go wrong for image sharpness while shooting in the water. Obviously my camera is in a water housing, with a lens port. Water can get on the port and cause an unsharp image. But usually when that happens, I cant even focus to begin with. So I'm wondering if the IS elements are moving around too much because of the extreme movement and causing a blur to the image? I shoot at an absolute minimum of 1/1000 for freezing movement but usually 1/1250 and up. Shooting on a 5d3. Would it possibly be better to leave IS off since I'm shooting at a high shutter speed anyways? I just thought IS would still be helpful but possibly I'm wrong. I plan on shooting with it off but still wanted to see if I could get some input here first.
Appreciate any insight anyone may have on lens IS and extreme movement, thanks.
So obviously I will use IS if I'm photographing something while standing on land and the light is low and my shutter speed is low. However, I shoot with a 70-200 2.8 ii while swimming in the ocean. I photograph waves, so it is always turbulent when I'm shooting. It's rare that I can be even close to still.
Since I got this lens, I've always shot with IS on in the water as I thought it would A) Help counter my movement in the water and B) Create easier viewing through the viewfinder due to the stabilization.
IS definitely helps with B, and I want to believe it helps with A but thats my question here. Is swimming in a turbulent ocean too much movement for the IS to handle? Am I possibly hurting the image sharpness? I do get sharp images but I'd say I get just as many "unsharp" images as I do sharp. Unsharp meaning I can clearly see where the lens focused (foreground and background are strongly blurred), but the part thats "in focus" is weirdly not sharp. Doesn't look like a crazy motion blur, but its definitely not sharp.
Now there is a lot that can go wrong for image sharpness while shooting in the water. Obviously my camera is in a water housing, with a lens port. Water can get on the port and cause an unsharp image. But usually when that happens, I cant even focus to begin with. So I'm wondering if the IS elements are moving around too much because of the extreme movement and causing a blur to the image? I shoot at an absolute minimum of 1/1000 for freezing movement but usually 1/1250 and up. Shooting on a 5d3. Would it possibly be better to leave IS off since I'm shooting at a high shutter speed anyways? I just thought IS would still be helpful but possibly I'm wrong. I plan on shooting with it off but still wanted to see if I could get some input here first.
Appreciate any insight anyone may have on lens IS and extreme movement, thanks.