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  1. #2641
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    Standing at the same distance, take a shot with and without the teleconverter.
    Upsize the 50mm one to the size of the other and compare.

  2. #2642
    Join Date
    Dec 2007
    Posts
    2,562
    Here are the two side by side.

    Frank




    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  3. #2643
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    Frank,
    a 2x converter tends to reduce contrast and blur detail and of course loses you 2 stops.
    With some converters, upsizing the "without converter" shot can work out better, depending on the quality of the tele.
    Clearly, if you can move closer, then the unconverted shot will always be superior.

    I can't tell from a web image, you need to compare the shots with a critical eye.
    BTW, there's nothing riding on this, I just want you to be aware of the downside and I'm interested in hearing your thoughts.

    BTW (another), the sweet spot of the lens for centre resolution is f5.6 and f8 for border resolution.

  4. #2644
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    BEWICK'S SWAN
    Name:  178 Bewick's Swan Sb 0007.DxO_Alt.jpg
Views: 91
Size:  622.8 KB
    Camera: Sony A900
    Lens: Minolta 200mm HS APO G
    Focal Length: 200mm
    Exposure: 1/4000th at f5 (+1.3ev) ISO 320
    07th October 2010

  5. #2645
    Join Date
    Dec 2007
    Posts
    2,562
    Great shot. I never seen a swan with yellow on it like that.

    Thanks again for the help
    Frank

    PS Where could I get critical eye????? I know I don't have one!!
    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  6. #2646
    Join Date
    Mar 2005
    Location
    Cambridge, UK
    Posts
    686
    The swan looks very strange to me as we tend to have mute swans here:


    I have this as my PC wallpaper and it works well with the icons down the lefthand side.
    Last edited by Anthony; 11-12-2010 at 06:04 AM.

  7. #2647
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    Frank,
    I don't think you'll see it in the US although it is related to your Tundra Swan.

    The smallest swan in the UK, the Bewick's is more goose like in shape. It arrives in Britain in mid-October after spending the breeding season in Siberia. Found mainly in eastern England, around the Severn estuary and in Lancashire with concentrations at the Ouse and Nene Washes (Cambridgeshire), Martin Mere (Lancashire) and Slimbridge (Gloucestershire).

    I'm not sure we should inflict you with the "critical eye", Frank. It's an incurable condition found mainly in the female of the species but increasingly being identified in digital photographers after years of pixel peeping. No known cure!

    _______________

    Anthony,
    The mute is our only resident breeding swan, so much more common than the Bewick's which only drops in for a winter break.

    I posted Mute Swan pictures earlier in this thread if you're interested. LINK

  8. #2648
    Join Date
    Mar 2005
    Location
    Cambridge, UK
    Posts
    686
    Another great picture; its a shame our local lake water is brown not a nice blue.

    That was the swan that kept attacking me when I was taking the damson fly photos ( taken about the same time ). It settled down after a while and I took that photo from about 3ft away.
    Last edited by Anthony; 11-12-2010 at 12:32 PM.

  9. #2649
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    The swan I linked you to was really pissed. You can see from the set of his wings that I was not his favourite person. Fortunately he was more concerned with keeping his "mate" out of harms way.

    Remember "Hissing Sid"???? LINK

  10. #2650
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    When photographing the Mute Swan in bright sunshine, there's a frustratingly fine line between over/under exposure.

    You also need to be ready to beat a hasty retreat from another "Hissing" Swan.

    MUTE SWAN

    Name:  179 Mute Swan SB 0088.DxO.jpg
Views: 56
Size:  787.0 KB

    Camera: Sony A900
    Lens: Minolta 200mm HS APO G
    Focal Length: 280mm (1.4x Tele)
    Exposure: 1/2500th at f8 (+1ev) ISO 320
    07th October 2010

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