A&P what do uthink of these pictures??

Discussion in 'Lifestyle' started by sanwugi, Jun 24, 2008.

  1. sanwugi

    sanwugi New Member

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    i've always had a suspicion my 40D might have some problem with focusing..

    usually when i take landscape pictures. it doesnt seem to have the same problem with closeups (maybe me taking pictures at f/4.0 might be the problem..)

    take a look at these pictures and tell me what you guys think.

    1. 17-85mm at approximately 50 mm, @5.6

    [​IMG]

    2. 17-85 mm, approx 50 mm, @ 20

    [​IMG]

    3. 50 mm, @ 5.6

    [​IMG]

    4. 50 mm, @ 20

    [​IMG]



    what do u guys think? i took these on a tripod, at 100 ISO and large JPG (although photobucket seems to be shrinking them down...)


    i know i haven used teh best lenses out there, but are these pics up to par??

    in terms of clarity and sharpness?

    thanks!
     
  2. adamlewis88

    adamlewis88 New Member

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    #1 The 17-85 is really not a sharp lens in any way, shape, or form.
    #2 The 40D seemingly has a stronger AA filter than other models. Did you do any sharpening on these? What is sharpening set to in camera?
    #3 f/20 is going to soft due to diffraction. I wouldnt shoot past f/11 really.

    http://www.cambridgeincolour.com/tutorials/diffraction-photography.htm
     
  3. sanwugi

    sanwugi New Member

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    thanks for the quick response!

    alright, these pictures are straight out of the camera, without any editing, other than the resizing photobucket did for me.

    yeah i've been disappointed with the 17-85; you dont think i should be worried about any problems with the body though? the 50 mm is the 1.8 II by the way.

    i'll try taking a couple more shots tomorrow around f/11. :big grin:
     
  4. DRAIGON

    DRAIGON New Member

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    #1 Power lines
    #2 Power lines
    #3 Power lines
    #4 well doesn't need an explanation!
     
    Last edited: Jun 24, 2008
  5. adamlewis88

    adamlewis88 New Member

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    Like I said, the 40D seems to require more sharpening than previous cameras. All, and I mean ALL, digital cameras will require SOME sharpening to make them look sharp. Its all due to the design of the array that captures a picture and the AA filter placed over the sensor. Apparently, the 40D has a somewhat more aggressive AA filter than previous models so that means youll need to apply more sharpening to get really sharp files from the camera.

    What sharpening settings is the camera on now?

    The 50 f/1.8 II is sharpest at f/5.6
    The 17-85 is sharpest at f/8 @ 50mm

    Try testing the two like that and then turn up the sharpening in the camera, or sharpen the files later in Photoshop.

    Its the same story with the original MkII cameras. A lot of them would require you to sharpen the file in camera (or in DPP during RAW conversion) AND sharpen it later in photoshop to get a very sharp looking picture.
     
  6. adamlewis88

    adamlewis88 New Member

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    Sharpened

    [​IMG]
     
  7. mobbarley

    mobbarley Active Member

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    rather than jumping straight into that i'd research where to focus the right settings to use for a shot like that. its hard tell from the small photos but it looks like some of them are focused quite a bit too far forward, and as someone said earlier you are kind of going above and below the sweet spot for sharpness with your aperture settings.
     

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