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w-20 wide angle lens samples

Discussion in 'Ikelite' started by jim2386, Feb 20, 2009.

  1. jim2386

    jim2386 Divemaster

    # of Dives: 200 - 499
    Location: Lexington, KY
    199
    7
    0
    Hey guys,

    Ikelite's website has one sample of what the performance of the W-20 lens does. Does anyone know where I can get more sample pictures shot with this lens? I'm worried about the edges of the pictures being blurred or having a black ring around the picture. I really want a wide angle lens though!

    Thanks
    Jim
     
  2. Ed Jewell

    Ed Jewell Instructor, Scuba

    # of Dives: I'm a Fish!
    Location: Melbourne, FL/Shavertown, PA
    174
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  3. Ikelite Staff

    Ikelite Staff Dive Equipment Manufacturer

    863
    21
    18
    Which camera are you shooting Jim?
     
  4. jim2386

    jim2386 Divemaster

    # of Dives: 200 - 499
    Location: Lexington, KY
    199
    7
    0

    I am shooting the A570IS.

    Thanks
    Jim
     
  5. Ikelite Staff

    Ikelite Staff Dive Equipment Manufacturer

    863
    21
    18
    I don't have any underwater images taken with that combination. However here's a quick example of the Canon A570 in an Ikelite housing with a W20 lens. It was taken without flash, f/8 aperture and ISO800.

    Underwater you may find it to be slightly sharper. The small bit of vignetting in the corner may vary slightly by housing and will be minimized when water fills the space between the lens and the port.

    Hope this helps.

    Regards,
    Jean / Ikelite
    IKELITE Underwater Systems
    [​IMG]
     
  6. jim2386

    jim2386 Divemaster

    # of Dives: 200 - 499
    Location: Lexington, KY
    199
    7
    0
    Thanks! How far away roughly would you say you were from the wall? You've been a great help! Hopefully a tiny bit of zoom will fix the vinetting.
     
  7. Ikelite Staff

    Ikelite Staff Dive Equipment Manufacturer

    863
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    I didn't measure exactly, but I would say I was about 3' from the wall.
     
  8. jim2386

    jim2386 Divemaster

    # of Dives: 200 - 499
    Location: Lexington, KY
    199
    7
    0

    Do you have any information on how many Fstops you gain(or lose) with this lens? I would assume you gain Fstops since a wide angle lens lets in more light.
     
  9. Ikelite Staff

    Ikelite Staff Dive Equipment Manufacturer

    863
    21
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    I know f/stops can be lost when using teleconverters or filters, but honestly do not know the effect of our external lens in that regard.

    Regards,
    Jean / Ikelite
    IKELITE Underwater Systems
     

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