jrtrent

Lives in United States United States
Joined on Jul 4, 2005

jrtrent's recent activity

  • Replied in ISO tutorial
    Nikon has an article called "Understanding ISO Sensitivity" that some of my friends and family found helpful. http://www.nikonusa.com/en/learn-and-explore/article/g9mqnyb1/understanding-iso-sensiti ...
  • Replied in all-in-one
    Like a couple of other posters have mentioned, all-in-one does not need to mean a wide zoom range.  An all-in-one lens for me can be a prime that's somewhere around a 50mm equivalent, or an ...
  • Now that you mention it, it occurs to me that I never thought about the term dynamic range when shooting film. I did think in terms of color and contrast differences, and might choose among ...
  • I have a camera with a Foveon sensor, the DP2s, and here is what my manual has to say about ISO: ISO Sensitivity [there follows a list of available ISO setting choices] The higher value indicates a ...
  • The problem for me with calling ISO a brightness control is that it doesn't differentiate ISO from shutter speed or aperture. All three affect the brightness of the picture, but they do it in ...
  • Grierson was talking about lens speed and the type of subject matter that faster lenses might allow one to tackle.  Previously in the chapter he had discussed different formats and camera types, ...
  • Depending on a person's interests, a fast lens may not be at all necessary.  Author Samuel Grierson had said in a 1940 outdoor photography book that an f/4.5 or f/6.3 lens would be the best ...
  • In the case of the two challenges concerned here, which had identical submission dates and ended on the same day, I think you might be right.  The description for the My Best Photo of the Week ...
  • I've used nothing but the 18-55 kit lens on my Samsung DSLR for 9 years. Test reports and your own experimentation can help you avoid disappointment with any lens you use. Photozone has a test of ...
  • Commented on photo Sculpted by wind in the What Do You Not Like About This Picture challenge

    A post-voting comment: I liked this picture very much, one of my favorites in the challenge. I wasn't there when you took it, so I could be all wrong in my assessment of it, but I get the...

  • Your experience with beginners must be far different from mine. Like many beginners, I use my pictures as they come from the camera. Any procedures or comparisons that involve changing the ...
  • Your responses to this part of Porky79's post is similar to Iliah Borg's. Iliah had suggested doing some fact testing, which is what I attempted to do with a web search plus checking some of my ...
  • Iliah Borg was responding to this part of Porky79's post: "In digital photography ISO measures the sensitivity of the image sensor. The lower the number the less sensitive your camera is to light ...
  • Replied in fact checking
    I tried checking on the facts you quoted by doing a Google search for "what is ISO." The first three results were: http://www.nikonusa.com/en/learn-and-explore/article/g9mqnyb1/understanding-iso-se ...
  • I don't disagree with you (though you can also do indoor available light shooting), but, to repeat, I wouldn't start with studio lighting when trying to help beginners understand exposure settings.
  • I made no such assertion. While it's true that a few of the more recent books do include the ISO setting as an exposure control, most restrict it to shutter speed and aperture. I should have been ...
  • An admirable and succinct description of what the exposure triangle is for. Yes, but as Mr. Jones points out, it can be an amusing diversion.  Participation in hobby forums is a hobby in itself, as ...
  • I'm not complaining that your brightness pyramid does not mention processing; I only mentioned it because I believe it reinforces that your original term, exposure pyramid, is a better choice. If ...
  • I like exposure pyramid better than brightness pyramid.  Exposure decisions involve the light conditions you're shooting in, the ISO rating you've decided to use for your film or sensor, as well ...
  • I suppose it depends on your camera and what settings you're comfortable using.  At least for the two cameras I currently use, I don't believe your proposed scheme would prove helpful.  For each ...
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Last review Feb 27, 2007
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