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03-14-2008, 05:49 AM   #16
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Except switching to f/5.6 would give you a shutter speed of 1/6s (unless you bump up the ISO). Just make sure you are focusing on what you want to focus on.

This is a great example of how f/2.8 can still be too slow indoors without a flash.

03-14-2008, 07:47 AM   #17
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I picked the focus point. It is much sharper and in focus at f4 and above, but if f2.8 doesn't cut it then why did I pay this kind of money for this lens? My understanding is that f2.8 will give me better low light shots, not worse. I have used primes with great success, but thought this zoom would give me more range for theater and indoor sports shots.
03-14-2008, 08:37 AM   #18
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Sounds like probably a depth of field issue. 2.8 helps in low light situations by allowing the shutter speed to stay faster, however it means that only a very shallow plane of things are in focus.

I'll say again, if the lens is working fine in brighter situations then the lens itself is OK. The problems you are experiencing in low-light are due to either shallow DOF, misplaced focus, or motion blur from the camera or subject (presumably you have anti-shake on?).
03-14-2008, 08:41 AM   #19
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1/30s is too slow for someone moving. If you take a bunch of shots in a row you might get one sharp shot where the subject was more still than in the other shots.

This is why I love using an external hotshoe flash. No more issues with subject blur/camera shake, and I can stop down a bit if I want.

03-14-2008, 01:51 PM   #20
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What about if the OP kept the 2.8 and everything else the same, but increased the ISO to `1600?

Would this help or would there then be too much noise in the picture?

(Just asking because I too am trying to learn this lens)

D.
03-14-2008, 02:24 PM   #21
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If he bumped the ISO up to 1600, the shutter speed would have increased to 1/125s, so it would be noisy, but hopefully have less camera shake/motion blur. It's always a trade off when the light levels get low.
03-14-2008, 06:16 PM   #22
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I think you are on the right track with the shutter speed. I spoke with my photographer friend and that was his take too. I am off to a show tonight and will try higher ISO and faster shutter speed. I'll take some noise for a shot I can use. Again, thanks to everyone for their posts. It was driving me nuts that the lens, or should say I, was working the way I wanted. I will post a successful shot.
03-15-2008, 07:43 AM   #23
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I think I am on the right track now with regards to shutter speed, ISO and DOF in low light. I upped the ISO and the shutter speed and got usable shots. I was expecting miracles from the stabilization in low light. The show was The ****** Dialogues. EXIF: Woman with glasses, f2.8, ISO 1600, 1/160 second, 0 Ev, 50 mm. Woman no glasses, f2.8, ISO 1600, 1/100 second, +.03 Ev, 28mm. Group, f2.8, ISO 800, 1/60, 0 Ev, 40mm. Made adjustments as lighting and position on stage changed. All shots run through lowest Noiseware setting. This has been a great tutorial. Thanks to everyone who posted.

03-15-2008, 07:47 AM   #24
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Curious.....

What mode do you shoot in? (where was the dial)

Thanks

D.
03-15-2008, 07:52 AM   #25
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Sorry folks. The images won't load. I'll keep trying.
03-15-2008, 07:56 AM   #26
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Here are the pictures.

Last edited by tarsus; 12-23-2009 at 06:15 AM.
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