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Old Jul 15, 2012, 9:38 PM   #1
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Default Nikon Mount Lens Dilemma

Sorry I have been away for quite sum time trying to give back my deed to bank in Florida(successful)

I want to buy either a Tamron or Sigma 70-200 2.8...I have seen several but 1 Sigma with OS is alot more than without the os..Any suggestions as to a lens on a Nikon D5100..Is the OS worth the extra say $400 or $500,and if not a Sigma or Tamron>> Thanks so much for your consideration
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Old Jul 15, 2012, 10:09 PM   #2
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If you have the image stabilization, and don't need it, you can turn it off. If you don't have it, and need it, you can't turn it on.

The rule of thumb is that you should keep the shutter speed faster than the focal length times the crop factor, in order to prevent motion blur due to camera shake. If you'll be shooting at 200mm, you should keep the shutter speed at 1/300 second or faster. If you'll be shooting at 70mm, you should keep the shutter speed at 1/100 second or faster. If you can do that, you can probably do without image stabilization.
  • The lens is the thing.
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