burkphoto wrote:
Just do it. Working with a 70-200 on a D500 is like working with a 135-300 on a full frame. There's a lot of magnification! You'll need a fast shutter speed for action, at least 1/320, even with VC on (which helps ONLY with camera shake, not subject motion blur).
f/2.8 can be the difference between manageable exposure and a missed opportunity, or between reducible noise and unacceptable quality loss. At f/5.6, on the 18-300, you need an ISO two stops faster, or a shutter speed two stops slower (longer).
The other reason to use a fixed aperture, 70-200mm f/2.8 zoom is optical performance. A "3X" zoom (24-70, 70-200) is usually MUCH sharper and performs better, overall, than a super-long-throw zoom. The 70-200 range is used by most professionals, often wide open, for shallow depth of field and subject isolation.
The 18-300 lenses are really made for travel use, outdoors, in bright light, where you can stop down to f/8 or f/11. Everything about them is a compromise to save space, save weight, travel light, and not have to change lenses. You sacrifice low light performance and optical excellence for practicality and weight savings.
Just do it. Working with a 70-200 on a D500 is lik... (
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Another excellent post from you Burkphoto, I don't need to add anything. Cheers