Importance of IS?

Started Oct 24, 2012 | Discussions thread
Laszlo13
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Re: Importance of IS?
In reply to viking79, Oct 25, 2012

viking79 wrote:

hellocrowley wrote:

mr moonlight wrote:

Just keep in mind that IS does not freeze motion. It just helps with camera shake. I find better high ISO performance and fast glass are what help the most in low light. The need for IS really goes down when you can shoot at ISO6400 without the worry of losing on image quality.

I think the advantages of having a larger sensor and much better high iso performance out weigh any advantages gained from IS. Now of course having both would be the best of both worlds, but I guess we can't have everything.

The IS does not freeze motion which could help you create very interesting photos of moving trains/bikes without setting up a tripod... With the XPro1, I generally have to use shutter speed triple that of the focal length to be safe (so 1/60 for 18mm, 1/125 for 35mm).

OMD IS helps gain about 5 stops. XPro1 ISO performance is about 1 stop better. Do the math and take your pick.

I think 5 stops might be optimistic? Maybe 2 or 3 more realistic based on what a person with steady hands can hold. Anyway, IS is no different than a tripod, you can always substitute a tripod for IS. Obviously, I hate carrying tripods, so that does make IS nice, but in practice I find that IS is never quite as good as a tripod.

Actually 5 stops is not necessarily optimistic.  This is 24mm equivalent shot at 1/3 sec.  People that haven't used the E-M5 won't understand - although you can try it at a store: look at the LCD while visibly shaking your hand all around.  It's fantastic for videos.  It's like carrying an invisible tripod.  With all that being said, I do agree that it's not needed most of the time with fast primes, unless indeed slow shutter speed is desired for motion blur.  It's just one piece of the equation whether or not to switch from Olympus, and I think it's a good piece.



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