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Thread: Is this considered sharp?

  1. #1
    HaseebM's Avatar
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    Is this considered sharp?

    Took this image with Canon 60D and Sigma 10-20mm lens. I used the "Clear" canon style setting. Want your opinion / comment if you think this picture is sharp enough or requires more. Image details Aperture F/10, ISO 100, 10mm, WB: Auto.

    I am nowadays beginning to think some of the images look soft or maybe I need a change of glasses.

    Thank you.

    Is this considered sharp?

  2. #2
    arith's Avatar
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    Re: Is this considered sharp?

    Looks very sharp to me.

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    davidedric's Avatar
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    Re: Is this considered sharp?

    I think it's sharp. Can you remember where your focus point was?

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    Administrator Manfred M's Avatar
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    Re: Is this considered sharp?

    Shooting at a 10mm focal length with a reasonable shutter speed 1/160s, according the the metadata, everything should be sharp. You are shooting an ultrawide angle lens, and it really tends to not matter where the focal point is, as everything from a few centimeters in front of the lens to infinity should be in focus when you stop down to f/10 (and diffraction won't be too big a factor either).

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    Re: Is this considered sharp?

    Haseeb: Yes every thing is in focus as you were using a 10mm at f/10 then anything that you focused on, say 50ft away then every thing from about 2.6ft to infinity would be in focus, with that lens you could have focused on something say 3ft away and again everything to infinity would have been in focus. That is the nature of hyperfocus for a 10mm lens at f/10, this may be something that you did not realize.

    Cheers:

    Allan

  6. #6
    davidedric's Avatar
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    Re: Is this considered sharp?

    Manfred, Allan,

    That's kind of what I was hinting at, but didn't know enough to say it properly. The boards in the nearest foreground look pin sharp, but even the trees just beyond the decking do not. Is that the way it looks to you (or maybe I need new glasses......)

  7. #7
    Digital's Avatar
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    Re: Is this considered sharp?

    The trees look sharp IMHO.

    Bruce

  8. #8
    HaseebM's Avatar
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    Re: Is this considered sharp?

    Thank you everyone for the explanations. I actually feel relieved. I know I had the focus points set to manual but do not recall the actual focus points. Manfred it was indeed 1/160.

  9. #9
    BCrose's Avatar
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    Re: Is this considered sharp?

    Looks good to me. Possibly the trees look OOF to you because there is so much contrast with the harsh mid day light?

    This is a nice spot for an picture taken when the light is nice Or even just at dusk with the lights on.

  10. #10
    HaseebM's Avatar
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    Re: Is this considered sharp?

    Indeed! Unfortunately it was whilst travelling in a car, we had to stop mid road and take this shot.

  11. #11
    HaseebM's Avatar
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    Re: Is this considered sharp?

    Quote Originally Posted by Polar01 View Post
    Haseeb: Yes every thing is in focus as you were using a 10mm at f/10 then anything that you focused on, say 50ft away then every thing from about 2.6ft to infinity would be in focus, with that lens you could have focused on something say 3ft away and again everything to infinity would have been in focus. That is the nature of hyperfocus for a 10mm lens at f/10, this may be something that you did not realize.


    Cheers:

    Allan
    Thank you Allan, indeed I was not aware of this. Would this change if I shot at say 14 mm with a 10 - 20mm lens?

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