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Canon EF 50mm f/1.8 II

  • 24-03-2011 5:12pm
    #1
    BigDaddyCan
    Registered Users Posts: 254 ✭✭


    Hey guys,
    just looking into buying one of these lenses and wondering is the lack of the IS an issue?

    I have noticed with my kit lens (18-55ef-s) that if i turn off the IS when im taking zoomed in shots of a subject they can be a bit blurry!

    is this something to worry about with the aforementioned lens?


Comments

  • #2
    Squidgy Black
    Registered Users, Registered Users 2 Posts: 21,725 ✭✭✭✭Squidgy Black


    there's no IS on any kind of prime lens that I know of, only telephoto's.

    it's not really a problem at all 'cause the lens is so small and light that it doesn't really move to much and is easy to hold. with the extra stops of light you'll be able to bump up your shutter speed anyways


  • #3
    leche solara
    Registered Users, Registered Users 2 Posts: 2,161 ✭✭✭leche solara


    and you'll also be closer to your subject


  • #4
    BigDaddyCan
    Registered Users Posts: 254 ✭✭BigDaddyCan


    thanks for the reply lads! probably a bit of a n00b questions but thanks any way :)

    gonna pick one up over the next few weeks!


  • #5
    5uspect
    Moderators, Arts Moderators Posts: 10,518 Mod ✭✭✭✭5uspect


    Have a read of this thread a few threads down the page:
    http://www.boards.ie/vbulletin/showthread.php?t=2056216153

    The kit lens has a maximum aperture of f/5.6 at 55mm. The 50mm is f/1.8 at 50mm.
    That amounts to three and a half stops of light. That means you can shoot at lot quicker shutter speed without need for IS.


  • #6
    the_monkey
    Closed Accounts Posts: 6,556 ✭✭✭the_monkey


    Yeah as said allready no need for IS on such a wide ap. lens, also at 50mm you would rarely need IS no matter what ap. you were using.


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  • #7
    The Snipe
    Registered Users, Registered Users 2 Posts: 2,484 ✭✭✭The Snipe


    If you are shooting at 1.8 and can't keep the camera steady and need IS, then drop the vibrator in your hands :P


  • #8
    5uspect
    Moderators, Arts Moderators Posts: 10,518 Mod ✭✭✭✭5uspect


    stetyrrell wrote: »
    there's no IS on any kind of prime lens that I know of, only telephoto's.

    it's not really a problem at all 'cause the lens is so small and light that it doesn't really move to much and is easy to hold. with the extra stops of light you'll be able to bump up your shutter speed anyways

    The 100mm f2.8L Macro has Canon's shiny new 4 stop hybrid IS system.

    BigDaddyCan, you should re-evaluate your camera handling technique to reduce motion blur at slow shutter speeds or consider a tripod.


  • #9
    magicbastarder
    Moderators, Category Moderators, Arts Moderators, Sports Moderators Posts: 50,261 CMod ✭✭✭✭magicbastarder


    you have blur because the kit lens results in at least 4 times the shutter speed wide open that the 1.8 does.

    to work out the ratio of the shutter speed between apertures, double the ratio of the f-stop value.
    e.g f5.6 is 3 'times' f1.8; and that results in a shutter speed difference of a factor of nine. so that would bring you from (say) 1/15th to 1/125th s.


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