Quote:
Originally Posted by rapidfire
Hi,
I am new to digital photography having started this year really when I purchased a
Canon EOS 450D and as I am interested mainly in wildlife photography recently invested in a Sigma 150 - 500mm F5 - 6.3 APO DG OS lens.
I am trying to remember everything I am reading and to put it into practise in the attempt to get clear shots but I am finding a lot of the pictures I take are out of focus especially at the high end of the telephoto range even using the OS and a fast shutter speed.
I tend to shoot on AV mode using evaluative metering and the lowest ISO I can without losing shutter speed.
Also i notice I am getting what I call 'ghosting' around the subject when shooting white birds on water such as Egrets and Swans etc.
I would really appreciate any pointers anyone can give me even if it just reassures me that I am on the right path to a clearer result.
Many thanks.
John
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I take it that with the standard lens you are not having any problems and that you always use a tripod with the telephoto .
At 500mm there is no room for error you must try to keep both the shutter speed up and use as small an aperture as possible even if this means turning up the iso
The reason you have to use a small aperture by the way is because no lens performs at its best at its maximum aperture
If the subject is not moving it Ok to use a lower speed shutter but any vibration of the camera will be certain disaster
The ghosting could be a number of things I assume that the lens is clean and your not using a cheap filter .
I’m not familiar with the lens you will have to hope some one else will be able to help
Ed