S F Lens question.

Discussion in 'Photography' started by Bernard Fishtrousers, Aug 22, 2017.

  1. I'm after buying a faster lens for my Canon dslr of the 70-200 f2.8 flavour.
    Some appear to have image stabilisation and others don't.
    My old fashioned skills tell me that at 1/250th and above, I shouldn't need it
    And below that speed I should be using a tripod.
    Have the rules changed?
    Can anyone help please?
  2. I use one of the Canon IS 55-250 mm zooms of the cheap(£200) F/5.6 variety and the IS feature does make it possible to handhold at slower shutter speeds than without. So yes it changes the rules.. I cant remember the precise figures but you might be able to get a usable shot around 1/125 or slower handheld.
    It also steadies up video making it a lot less wobbly.
    I also find that in general the quality of the image sensor on my EOS100D at ISO400 means I dont really miss the 2 stops of going from F/5.6 to F/2.8. What I do find is the 200-250mm end of the range is a bit soft at wider apertures.
  3. Terrordales

    Terrordales Nightshift Admin

    Go with image stabilization every time.
    I can hand hold my Canon EF 400mm f/4 DO down to 1/30th and occasionally 1/15 with I.S. switched on.
    With practice you will be amazed how slow a speed you can actually shoot at.
    A monopod is sometimes all you need to steady a longer lens.
  4. I use that old school rule of thumb and it's still valid.
    I use a non IS Olympus 40-150mm (80-300mm full frame equivalent) f2.8 on my Panasonic G7 for rugby and triathlon photos. I always try to stay above 650th second exposure to freeze the action and have little problem.
    IS will allow a couple of shops slower handheld but obviously won't stop blur of a faster moving subject.
    If it has IS and you can afford it, use it. If not, old school still rules.
    Bernard Fishtrousers likes this.
  5. Why is everyone talking in some strange language on this thread?
    Terrordales likes this.
  6. Terrordales

    Terrordales Nightshift Admin

    It's like the Masons, once you've been inducted and learnt the secret handshake all the mysteries become clear.
    Fruitcake and Jono1249 like this.

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