Canon 70-200mm USM vs IS USM Version?

Discussion in 'Photography Equipment & Products' started by JamieR, May 24, 2009.

  1. JamieR

    JamieR TPF Noob!

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    I'm really interested in buying this lens and i would like to know why it is nearly double the price for the IS version?

    Surely Image Stablisation isn't that much of a big deal to make a lens twice as expensive?

    I would like to hear other peoples views on this please.
     
  2. Jaszek

    Jaszek No longer a newbie, moving up!

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    which version are you talking about, the f/4 or the f/2.8?
     
  3. JamieR

    JamieR TPF Noob!

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    The f/4, but the price is almost double on both. Is there a really good reason why it's twice? IS doesn't seem that big a deal to me, but I'm not sure how camera shake will be at 200mm.
     
  4. Jaszek

    Jaszek No longer a newbie, moving up!

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    you just answered your own question basically. Camera shake will be a lot when you are shooting at 200mm unless you have very very steady hands. Imagine you are shooting a wedding and they just put the lights down while the guests are dancing. Even at f/2.8 the highest shutter speed you can shoot with is 1/60th of a second to freeze action but have it exposed right. w/o IS there will be camera shake visible. I tried it once since I work at a Catering Hall. Came up to a photographer that had the 70-200 IS f/2,5, first I took a picture with IS on and then I turned it off. I clearly saw the difference IS makes, which is why I went with the IS version. Also if you are planning to buy it look around for used ones. I got mine for 1475 when the new one is about 1800 with tax
     
  5. RyanLilly

    RyanLilly No longer a newbie, moving up!

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    It really depends on what you shoot. I have a non is f/4, and pretty much need to shoot at 1/200 to avoid camera shake, on some occasions I have shot a bit slower( at shorter focal lengths I can shoot at much slower then the "1/focal length" rule) but, If I'm the least bit tired or have recently had a few cups of coffee(probably because I was tired), I need to shoot at 1/200, so sometimes this means shooting a pretty high ISO in order to avoid camera shake. So, my next big purchase will be a 70-200 2.8 IS. I have used this lens and the IS works pretty freaken good.
     
  6. JustAnEngineer

    JustAnEngineer TPF Noob!

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    The old rule of thumb is that your exposure time (in seconds) should be at least as fast as 1 / (focal length x FOVCF). The field of view crop factor (FOVCF) for the consumer and prosumer Canon cameras is 1.6x. Therefore, you should probably try for a 1/320s or faster exposure at 200mm.

    With a solid prop, image stabilization or a tripod, you can shoot longer exposures without blurring.
     
  7. RyanLilly

    RyanLilly No longer a newbie, moving up!

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    Right, that it the rule of thumb to which I was referring, and you are right that crop should be taken into account as a general guideline. I seem to have exceptionally stable hands, but considering the fov crop into the equation, is even more reason to want IS. If money is a limiting factor though, a good monopod goes a long way for camera stability while not limiting your mobility like a tripod.
     
  8. wgp1987

    wgp1987 TPF Noob!

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