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  1. #1
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
    Posts
    9,559

    Cool Some old and new lens comparisons ...

    The list is long and ... notable: The oldies but goodies

    Minolta AF 35-70mm f/4 MACRO
    SONY AF 18-70mm f/3.5-5.6 DT
    "Kit lens"
    TAMRON Powermaster AF 28-200mm f/3.8-5.6
    The center lens, KM AF 24-105 f/3.5-4.5 "D" was in need of repair and its results have been deleted
    TAMRON AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF)
    TAMRON AF 18-250mm f/3.5-6.3 XR Di LD Aspherical (IF)
    TAMRON SP AF 28-75mm f/2.8 XR Di LD Aspherical (IF) MACRO


    The class of glass ...
    Name:  7-lens-test-backgrd.jpg
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    This thread will run in six parts ... at three different focal lengths for resolution (35mm, 50mm, 70mm) at a distance of 7-feet for the entire series.
    Camera is tripod-mounted with a electronic release. Lighting is from four overhead incandescent (Tungsten) 75W Floods.
    The actual focal length is a bit imprecise, as I used marked measurements indicated on each lens barrel.
    Each image is a crop from the original without any scaling or resize.
    Bear in mind that some lenses will not support f/4 at certain focal lengths ... and there will be a difference in the brilliance as we go long ...
    I have noted the aperture changes in parenthesis (f/ ...).
    This test took 2 & 1/2 hours for shooting and postprocessing, after set up of target and tripod.

    YOU DECIDE!

    First, the 35mm shots, at the widest available aperture (keeping it roughly @ f/4) for the lens, simulating a low light light shot (in the order listed above):

    Minolta AF 35-70mm f/4 MACRO (f/4)
    Name:  _DSC1002-35-70-35i-4.jpg
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    SONY AF 18-70mm f/3.5-5.6 DT "Kit lens" (f/5.6)
    Name:  _DSC1025-18-70-35i-56.jpg
Views: 1187
Size:  284.9 KB

    TAMRON Powermaster AF 28-200mm f/3.8-5.6 (f/4)
    Name:  _DSC0995-28-200-35i-4.jpg
Views: 1201
Size:  295.8 KB

    KM AF 24-105 f/3.5-4.5 "D" (results deleted)

    TAMRON AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) (f/4)
    Name:  _DSC0981-28-300-35i-4.jpg
Views: 1205
Size:  302.5 KB

    TAMRON AF 18-250mm f/3.5-6.3 XR Di LD Aspherical (IF) (f/4.5)
    Name:  _DSC1014-18-250-35i-45.jpg
Views: 1226
Size:  369.5 KB

    TAMRON SP AF 28-75mm f/2.8 XR Di LD Aspherical (IF) MACRO (f/4)
    Name:  _DSC0988-28-75-35i-4.jpg
Views: 1125
Size:  323.5 KB


    Next ... 35mm @ f/8
    Last edited by DonSchap; 05-05-2009 at 02:38 PM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

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