Reply #6 - April 10, 2009, 03:04:14 PM
Who takes sharper wildlife photos than Mike? He recommends almost always shooting at f/8, which would nullify the need for fast glass. However, he also uses the best lenses he can afford because of the sharpness of the glass. This would in turn be back to paying for a top end f/2.8 fixed aperture lens, like the 70-200 f/2.8. This is not a cheap lens, but then sometimes 'cheap' is relative to your personal circumstances. Also, 200MM has almost never been enough for my personal wildlife photography. I say, always buy the best glass you can afford, regardless of your need/usage. For wildlife, you can't have too much zoom.
Aside from all of that though, I usually do everything I can to help my friends get the most out of the lenses they already have first. If your friend goes out and pays 1200-1500 for a new fast lens, but still has a bad technique, she is only going to be upset that her images are still soft, even after spending all that money. Proper exposure will affect sharpness because of not enough detail to begin with, graininess is introduced from underexposure as well, too low of an ISO for proper hand-holding shutter speeds when no tripod is used, dropping the camera after pressing the shutter instead of following through, proper focus, using the right AF function with your camera for the circumstances, camera holding technique, etc, etc. These are all things we already know, and often take for granted, but are all too often the cause of soft images. I would recommend, if you haven't already, spending some time with her helping her hone her skills to get the best that's possible out of her current equipment, then help her choose a lens.
One other thing to consider... is she using a teleconverter? The cheap versions of these are horrible for image sharpness and make hand-holding shots nearly impossible as well because they reduce the amount of light by such an extreme factor. I personally would not recommend using them for wildlife at all, unless she is willing to spend 200-300 bucks for some of the upper end models. That's not to say they aren't used and don't have a place, but in my own experience they were only a source of frustration and discouragement.
My three cents,
Travis

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