How Good is my Photo..?? Discussion.. Any tips, Criticisms or Ideas Please..!!

Discussion in 'Photography Talk' started by Marley Farley, Jul 27, 2009.

  1. ARMANDII

    ARMANDII Low Flying Administrator Staff Member

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    Okay, ND filters come in various grades like :

    2 x one stop [exposure]
    4 x two stops
    8 x 3 stops
    64 x six stops
    1023 x ten stops

    Actually using a ND filter is simple, you just either slot or screw on the filter and the camera's metering system will calculate the filter factor. If it's a, say, 8 x filter the camera will adjust the shutter speed from 1/125 sec to 1/15 sec because it's compensating for the 3 stops of extra light required to take the pic, or it might open the aperture from f22 to f8.:snork:
     
  2. Freddy

    Freddy Miserable git, well known for it

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    Ok, think I understand:) I presume that the higher the rating, the more it neutralises the contrast?
     
  3. ARMANDII

    ARMANDII Low Flying Administrator Staff Member

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    Yup, I would say 8 would be the maximum you'd need but you could experiment by getting the lowest and see how you get on with it..........on the rare days that we get a blue sky and sunshine.:coffee:
     
  4. Freddy

    Freddy Miserable git, well known for it

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  5. ARMANDII

    ARMANDII Low Flying Administrator Staff Member

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    Exactly!!!:heehee: However, even a light grey sky mixed with a darkish foreground can give you an over exposed sky if you're not careful. As you already know it's a matter of not just pointing the camera but looking at the light conditions, composition, appropriate aperture and shutter speeds.:coffee: I say that, and just know there have been times................:oopss:
     
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    • Dave W

      Dave W Total Gardener

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      In this case I'm not sure that an ND filter is the best option as the over exposed part of the image is well off a horizontal line.

      The best (retrospective) course of action would have been to bracket exposures - with a least one for foreground and one for the background and then use HDR or other software to combine them.
      Next best might be creating a pseudo HDR image by processing one exposure to bring out the background and then combining it with the foreground.

      In this particular case I don't think there's any way one could produce a photo that captured what the human eye can see in a single photographic image as the dynamic range is too great.
       
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      • Steve R

        Steve R Soil Furtler

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        Hi Freddy,

        Your shot is what is known as a "High Contrast Scene" which means it has extremes of highlights and shadows within it, there are a few ways to deal with it, most have been covered already by Armandii and Dave, but I'll mention them again here anyway.

        Shoot in manual mode: Point your camera at the sky and half press the shutter button to give yourself a lightmeter reading to remember, lets say its 5 increments over, now do the same for the shadows, lets say it's 7 increments under, best exposure would be 1 increment under (increments are simply the lines on your light meter) as this is the very middle ground. Note that I said best exposure and not correct exposure.

        Setup with a tripod and take two shots, one at 5 increments over and another at 7 increments under. Add both of these shots to photoshop in a new document as layers and using a mask reveal the good sky through onto the good foreground using the eraser tool or some such similar method.

        Digital cameras cannot capture what the human eye can see, it can capture parts of it at a time only. The Dynamic range of our eyesight is sadly not met by the cameras ability to capture it, this is the only reason HIgh Dynamic Range photography came about, it allows photographs to be taken that cover the complete dynamic range of our eyesight, and the software will combine those shots to take best advantage of both the shadows and highlights and tones in between them. Unfortunately not many people use HDR photography as it was intended to be used and its getting a cult following status now for it's ability to make some weird and wonderful artworks, that's fine if its what you want to do but if HDR photography is used for what it is intended its a superb tool and should not be overlooked or condemned. If the HDR process is done correctly, the photographs viewer would not know it's HDR.

        Shoot in RAW mode: When you take photo's in jpeg mode on your camera, your limiting yourself to an 8 bit image and that image will be to a certain point compressed and adjusted by the camera using some presets, factory set, within the camera. If you shoot in RAW mode you get a 16 bit iamge (its actually nearer 12, but thats another discussion) so there is more information within the photo to work with and it comes out of the camera completely raw and unaffected by prests, this gives a greater scope of post processing ability in a RAW converter (RAW converters must be used to give a final jpeg for general use ie viewing online, printing, emailing etc.). RAW converters are incredibly flexible in what they can do and for your photo Freddy it could help with calming down that sky and revealing some detail in the pikes.

        [​IMG]

        I hope you dont mind, but I grabbed your photo and have given it a quick edit to show a hint of what can be done. Its by no means a great job but its an 8 bit image thats small in size...so not a great deal of information to work with. However, it does show something can be done and with a full resolution copy of this photo, I could do much more, with a RAW version I could do even more...but with a bracketed set of photo's I could utilise HDR and do yet more and produce stunning results.

        The final option is to wait for camera sensor manufacturers to hurry up and make a sensor that can capture what the eye can see.....I dont think thats too far away now.

        Steve...:)
         
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        • wiseowl

          wiseowl Admin Staff Member

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          Good morning all,I would value your opinions on this image I took this morning bearing in mind that I had to follow the seagull in flight:)

          [​IMG]
           
        • Steve R

          Steve R Soil Furtler

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          Panning is not as easy as you think it would be, follow the subject take the snap..job done, but if you do it that way you'll get blurred photo's so you must follow the subject and continue to do so as you press the shutter button, it's not easy!

          I think you have done very very well here Woo for such a difficult subject as a bird in flight, very difficult with all those flappy things, there is even a small catchlight in it's eye!

          Steve...:)
           
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          • ARMANDII

            ARMANDII Low Flying Administrator Staff Member

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            Just as a matter of interest, Freddy, do you have the option of using post processing software? Steve has done a really admirable job of recovering the pic it shows you what can be done.:love30:
            I think what we have to recognise that some photographers want to take a decent shot, or perhaps try to better their chances of doing so, without getting involved in the intricacies of pp software to a semi-expert's level and the cost therein. There are some free pp programs out there but they wouldn't do the real job needed with Freddy's pic.:snork: Taking the simpler methods may be less effective than pp but it is as far as they might want to go in practice.
             
          • ARMANDII

            ARMANDII Low Flying Administrator Staff Member

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            I agree with Steve, Woo, I know I'd been happy with that shot. I take it he was heading in that direction because there was a Raptor too close to him taking a pic.:snork:
             
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            • wiseowl

              wiseowl Admin Staff Member

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              Thank you Steve and Armandll ,your oppinions are much valued,I must admit that I am now wondering if this type of shot would be possible with a bridge camera,as this was taken on my DSLR on a continuous setting:)
               
            • Freddy

              Freddy Miserable git, well known for it

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              Hiya Steve, thanks for that great reply.
              Sadly, as hinted upon by 'Mandy', I don't have any programs for post adjustments of pics, and even if I did, I wouldn't have a clue how to go about it. On my old PC, I had PS, but it was as much as I could do to use the 'image adjustment' tab! Somewhere, I think I have the CD that came with the camera, but I'm not sure if it was for more advanced techniques of processing:dunno: Maybe you could recommend an EASY TO USE program/converter that utilises RAW?

              Cheers...Freddy
               
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              • Freddy

                Freddy Miserable git, well known for it

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                A "bridge" camera?
                 
              • Steve R

                Steve R Soil Furtler

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                A camera between a compact and a full whistles and bells DSLR...it "bridges" the gap.

                Steve...:)
                 
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