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      Published on 09-18-2012 10:19 PM
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      I was walking along a narrow path next to Little Estero Lagoon while scouting for a Southwest Florida IPT. About 50 yards ahead of me there were two American Oystercatchers foraging. The only problem was that 35 yards ahead of me a photographer was lying on his belly photographing the pair of attractive birds. They were catching big worms and the light was lovely… What to do? The guy was on the wet sand was facing away and was not at all aware that I was there. If I called to him (to ask if I could join him) I risked scaring the birds away. So I stood there for 30 minutes and watched with a bit of envy. Finally I decided that I would join him by starting my crawl from way back so as not to flush the birds.
      I advanced slowly a few yards, remaining well outside of this species usual circle of fear. I slowly and carefully got down on one knee and the birds did not notice me, but as I lowered myself to the prone position, ...
      by Published on 08-06-2012 07:27 AM

      This post is derived from my web article: http://www.clarkvision.com/articles/iso

      What is ISO on a digital camera?

      Reading manufacturer literature, review sites, and online discussions, one is led to believe that ISO changes sensitivity, and changes exposure. These ideas are both incorrect.

      Myth #1: ISO changes sensitivity. False! Digital cameras have only one sensitivity, given by the quantum efficiency of the sensor, and the transmission of the optics and filters over the sensor. ISO is simply a post-sensor gain applied to the signal from the sensor.

      Myth #2: ISO changes exposure. False! When you change ISO on a digital camera, two things are changed ...
      by Published on 08-02-2012 06:11 PM
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      I have been wanting to build a floating hide for some time and over the past month or so have had this project going in my shed. After searching the internet, including BPN, I found little in the way of how to build one - I did find a video of a floating hide used for photography here http://vimeo.com/36899837 and I thank Sparky for answering an email as to how he built his hide and the materials used especially for the netting.

      So I thought that the users of BPN may find this helpful.

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