Use the delay timer. Set it for 10 seconds of whatever, frame your shot on
the tripod and press the button and then move away from the camera. Mirror
movement might cause a little problem. If you can lock it up, if not then
just do the best you can. An SLR digital or otherwise that can't lock the
mirror up is a joke especially if it offers longer than 1 second exposures.
R
"Bill" <> wrote in message
news:ftCdnbLPB-...
> dohc46 wrote:
>
>>Better yet, finger shake!
>>DSLR Rebel XT using 70-300 USM IS Canon.
>>I wanted to experiment at dusk to see if I could get a clear/sharp
>>picture without blur by slowing down the speed to 1 second...by
>>changing the ISO and Fstop with 1 second the exposure was just right.
>>About 80 yards away was a sign with many words and I was using a
>>tripod. When looking at the sign in focus I could easily read the
>>words. btw i tried with IS on and off and I also enabled the mirror
>>lock. Point is even with tripod & mirror lock, just by touching the
>>button with my finger I could see shake through the camera....when I
>>viewed my pics I could hardly read the words due to blur.
>
> Part of the problem is the shutter speed - 1 second is just inside that
> range of speeds which are easily affected by camera shake from the
> mirror slap at telephoto lengths, even if you use a tripod.
>
> Unless you use mirror lockup to reduce vibration, you want to avoid 1/30
> to 1 second exposures since the camera will still be shaking from the
> mirror slap.
>
> It's a good idea to become more familiar with shutter speeds and its
> effect on images. Once you know why you have a problem, it's easier to
> identify the causes, and work around them by avoiding certain shutter
> speeds.
>
>>Would a remote fix this problem? or better yet (for free) what would
>>happen if I learned how to set the timer on the camera? Would either
>>of these solve the problem.
>
> Yes, both will effectively reduce camera shake from contact using your
> finger to fire the shutter.
>
> But neither will fix the problem if it's vibration from mirror slap in
> the range of 1/30 to 1 second.
>
>>The sign was very stationary. Also had it zoomed to 300mm. Of course
>>at that distance the flash was not enabled.
>
> The longer the focal length, the more camera shake is an issue. Closeup
> shots can also be greatly affected.
>
>>The camera goes all the way to 30 seconds, I would hope there is a
>>valid way to get sharp pictures at "only" 1 second.
>
> You have several options.
>
> If you have true mirror lockup (MLU), definitely use it (the XT has it).
>
> If you don't have MLU, then shorten the exposure time to less than 1/30
> of a second by increasing ISO, opening the aperture, etc.
>
> If you don't have MLU, lengthen the exposure time to several seconds so
> the camera can settle from the mirror slap and the effect of vibration
> is greatly reduced.
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