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  • #1

    Can someone explain this for me?

    Thought I'd try and complete my own challenge! so popped out to take a few autumnal photos today.

    Was quite surprised at the difference between these two photos, as far as I could see the only difference was the use of ND filters on one of them. The dynamic range change was a real eye opener!

    Can someone explain why the use of the ND filter has enhanced the photo so much? I didn't realise the E-M1 sensor was so influenced by exposure times...

    (JPEGs exported straight off the RAW images reduced in size for the forum by Lightroom, no other editing performed...)

    E-M1 plus 12-40 PRO @ 12mm for both photos.

    0.5s f11 plus three stops worth of ND filter



    1/60s f9.0 (hadn't remembered changing the f stop!)

    Paul

    Retired and loving it.
    Tags: None
  • #2
    Re: Can someone explain this for me?

    Does the difference in exposure add up to 3 stops? f/11 to f/9 is, say, 2/3rds of s stop brighter. 1/60th from 1/2 second is 5 stops darker, so 4 and third stops darker in total. Assuming my arithmetic is correct!

    It looks rather as if the sun was brighter in the first shot. The shadows are more distinct. Did the ISO stay the same? There is no exif data on the images.

    Ian
    Founder and editor of:
    Olympus UK E-System User Group (https://www.e-group.uk.net)

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    • #3
      Re: Can someone explain this for me?

      I can see more contrast in the first one with the ND filter & especially, darker shadows & deeper blue in the sky. So Ian's suggestion that the sun might have been shining a little brighter (less obscured by the cloud) in the first could be the case.
      Ross "I fiddle with violins (when I'm not fiddling with a camera)". My Flickr
      OM-1, E-M1 Mk II plus 100-400mm f5-6.3 IS, 7-14, 12-40 & 40-150 f2.8 Pro lenses, MC14 & 20.

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      • #4
        Re: Can someone explain this for me?

        The ND filter has affected the white balance of the shot
        OMD E-M1ii MMF3 8-25 f4 Pro 40-150 f2.8 pro MC-14 12-40 pro 14-42 EZ 9-18 f4.0 -5.6 40 -150f4-f5.6 R Laowa 50mm f2.8 macro Sigma 105 f2.8 macro Holga 60mm plastic Holga pinhole lens lens and an OM2sp

        I nice view does not mean a good photograph. My FLickr

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        • #5
          Re: Can someone explain this for me?

          Originally posted by alfbranch View Post
          The ND filter has affected the white balance of the shot
          That shouldn't be possible. It looks to me like the second shot was in overcast lighting with WB set of sunlight.

          Harold
          The body is willing but the mind is weak.

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          • #6
            Re: Can someone explain this for me?

            Originally posted by Harold Gough View Post
            That shouldn't be possible. It looks to me like the second shot was in overcast lighting with WB set of sunlight.

            Harold
            Yes, cloud cover produces a cooler image.

            Ian
            Founder and editor of:
            Olympus UK E-System User Group (https://www.e-group.uk.net)

            Comment

            • #7
              Re: Can someone explain this for me?

              Walti, which, if either of the two shots, looked closer to when you took the camera away and just looked at the tree with your eyes?

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