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Testing a new lens - what do you check?

  • 11-03-2008 6:44pm
    #1
    Ninja_scrotum
    Banned (with Prison Access) Posts: 510 ✭✭✭


    Got my sigma 17-70 a few days ago. From reading reviews I know that the quality of these lenses are hit and miss.

    I'm a bit of a newbie and only know the brick wall test!

    Brick wall test went ok btw....

    Does anyone here have any type of routine check to go through when ye get a new lens?

    cheers


Comments

  • #2
    Fajitas!
    Registered Users, Registered Users 2 Posts: 16,624 ✭✭✭✭Fajitas!


    Just go shooting with it :)

    Too many people buy a lens, realise it's not the best thing in the world, take some bad photographs, and go online saying that the lens is a bad copy....

    You'll find out soon enough if your lens is alright by just taking photos with it :)


  • #3
    ShakeyBlakey
    Closed Accounts Posts: 184 ✭✭ShakeyBlakey


    Fajitas! wrote: »
    Just go shooting with it :)

    Too many people buy a lens, realise it's not the best thing in the world, take some bad photographs, and go online saying that the lens is a bad copy....

    You'll find out soon enough if your lens is alright by just taking photos with it :)

    You beat me to it:confused:, but yea, go shooting everything and anything with it, same scene different apatures etc, your cat, your dog, with flash, without flash, on-off tripod, post a few pics.................


  • #4
    Ninja_scrotum
    Banned (with Prison Access) Posts: 510 ✭✭✭Ninja_scrotum


    You want me to shoot my dog and cat? :eek:


  • #5
    whyulittle
    Registered Users, Registered Users 2 Posts: 3,878 ✭✭✭whyulittle


    Ninja_scrotum wrote: »
    You want me to shoot my dog and cat? :eek:

    Over and over again! :D


  • #6
    rymus
    Registered Users, Registered Users 2 Posts: 8,819 ✭✭✭rymus


    geez hmm lets see... shoot a focus chart, take lots and lots of photos and go through them all in photoshop at 100% to make sure the lens is rendering each pixels worth of information correctly. Take some batteries, line them up on their ends and shoot the detail in them.. Then view that at 100% to make sure the sharpness is ok.

    Do that once every three days for the next 2 years to ensure the lens maintains it's sharpness and focusing speed. Read plenty of the DP Review forums to keep on top of any issues or possible malfunctions with the lens as reported by numerous diligent members. Buglists aren't hard to find for your specific lens, just use the search function.


    Or, go out and take photos with it..


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  • #7
    Oriel
    Banned (with Prison Access) Posts: 5,154 ✭✭✭Oriel


    *covers Al's ears*
    Look for vignetting.
    *releases Al's ears*

    And look for blurring near the edges of the photos, that appears to be a common flaws in lenses.
    You should usually expect a falling in sharpness with lower and higher f-values.


  • #8
    Borderfox
    Registered Users, Registered Users 2 Posts: 10,263 ✭✭✭✭Borderfox


    Oriel wrote: »
    *covers Al's ears*
    Look for vignetting.
    *releases Al's ears*

    :) Class,

    just take pictures too much pixel peeping on the American sites and I hope it doesnt spread over here..


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