this 'interference banding' also occurs when i use internal flash at 30s, but without it there is no banding whatsoever also at 30 s
not really a BIG deal as i rarely do longer than 5s exposures, and almost never shoot ai servo. being a nikon user up until i switched cause i wanted the d30 (only nikon option was $5k for less resolution at the time) i've re-learned with my 20d what i used to with my F5's - move that focus point around very very fast.
it's not for everyone though and requires some prediction on your part, but i never trusted ai servo type focus even on the flawless F5.
JeffG wrote:
it's not for everyone though and requires some prediction on your part, but i never trusted ai servo type focus even on the flawless F5.
AI Servo has nothing to do with AF point selection. In One Shot mode the AF locks when you half press, and will not refocus until you re-half-press. With AI Servo when you half-press the camera will focus and then continue re-focuing until you take the shot or release the button. AI Servo is essential for shooting where the subject is moving towards or away from you in an unpredictable manner. It is especially necessary for indoor sports work where you typically are using lenses wide-open (or close to it) and have very narrow DoF.
craig360 wrote:
Mine does it also! And with the external flash there was no banding!
Thanks Craig - it seems pretty clear at this point that it is a general problem, and not specific to a hardware fault unique to a few bodies. I saw that one user couldn't reproduce it, but it's hard to know if they followed the instructions exactly, etc. We had one user recant already, so it wouldn't surprise me.
Sam Bennett wrote:
AI Servo has nothing to do with AF point selection. In One Shot mode the AF locks when you half press, and will not refocus until you re-half-press. With AI Servo when you half-press the camera will focus and then continue re-focuing until you take the shot or release the button. AI Servo is essential for shooting where the subject is moving towards or away from you in an unpredictable manner. It is especially necessary for indoor sports work where you typically are using lenses wide-open (or close to it) and have very narrow DoF.
i have no idea why you would attempt to lecture me on ai servo, i know exactly what it is.
and i've learned to shoot the same situations without it because it is not 100% reliable.
