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F2.8 and light with Canon 17-55 and Sigma 18-35

Started Aug 18, 2015 | Discussions thread
Great Bustard Forum Pro • Posts: 45,641
Re: Keep in mind that 17-55 has 3- Stop IS, allowing slower shutter-speed for more light

J A C S wrote:

007peter wrote:

For example, shooting at 1/60s~1/100s in lowlight often result in pitch-black-backdrop. Where as using slower 1/10S ~ 1/40s allow me to illuminate the backdrop and avoid the pitch-black backdrop that I find annoying.

The flash freezes the main subject and the background is blurred anyway - so 1/10 to 1/40 sec without IS on this shot would not have made much of a difference.

It would have made a difference for the sharpness of the background due to camera shake (which, admittedly, would be minor in this case due to the background being blurred by being well outside the DOF).

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GKN
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