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

Started Aug 18, 2015 | Discussions thread
007peter
007peter Forum Pro • Posts: 12,933
@JACs - that is where Image Stabilization become helpful

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.

You're right that both lens will take the SAME PHOTO setting them both at 1/10s ~ 1/40s shutter-speed, in theory.

But in real life, you're dealing with arm fatigue, hand tremors, etc...Keep in mind that Sigma 18-35mm /1.8 is a bulky heavy lens @ 811g, which makes it front heavy & balance poorly on smaller/lighter weight DSLR.  It is easy to shoot @1/10s without IS on smaller prime like 50/1.4.  It another when trying to shoot @1/10s without IS on a large fix f/1.8 zoom like Sigma 18-35.

I hate Pitch-Black-Backdrop, so whatever lens I used (c17-55 or s18-35) I need to keep the shutter-speed between 1/10s ~ 1/40s.  For me, Image Stabilization becomes real handy in this scenario ensuring I get good keeper rates without a tripod.

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Panasonic Lumix DMC-GF6 Panasonic 20mm F1.7 II
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