Leonard Migliore

Leonard Migliore

Lives in United States Sunnyvale USA, CA, United States
Works as a Engineer
Has a website at http://www.laserk.com
Joined on Jan 4, 2004

Leonard Migliore's recent activity

  • Note that C-mount lenses have a 17mm register distance. That means that they focus 17mm behind the mounting flange. Teleconverters for SLR's are designed for much greater register distances like ...
  • Replied in It's free
    For $200, your best bet is to find a photographer with a decent long-lens setup and steal his equipment. You can probably also steal his lens and camera while you're at it. What you're asking for ...
  • What you're showing here is a lens (or lenses) at different focal lengths, not 2 lenses at the same focal length. When you use different focal lengths and then alter the distance to maintain the ...
  • I use an Xrite i1 Display Pro. It works very well. When I send files to Mpix to be printed, the prints match the monitor with no strange colors.
  • In your case, I'll believe you. And I'll wish you luck but you don't need as much as the rest of us do.
  • That's why I have the password for my RAID written on the side of its case. Anyway, I left it at admin like it was when I first turned it on.
  • Any idea what camera (and lens) you have? I sure don't. If it's a power zoom on a point and shoot you should just discard it.
  • Replied in Is this a joke?
    As a former user of the 3MP D30, I can definitely say that today's sensors are miles ahead. We now have 24 to 50 MP with increased dynamic range and much better light sensitivity. The only good ...
  • Is it stopped-down metering? In other words, do you have to stop the lens down to the taking aperture to get an accurate meter reading? So, in Av mode, you stop the lens down and the camera ...
  • Tedolph, please send me some of what you're smoking. I'll pay shipping.
  • Cell phone cameras are pretty good these days. So, depending on your purposes, it could be enough. Not a whole lot better. Most of the possible improvement is because most dedicated cameras have ...
  • The utility of a class depends on a couple of things. First, do you need to learn about the topics that are being presented? Second, if you do need to learn these things, do you think that the ...
  • Also, she was using Canon's excellent and expensive ($1850) 85mm f/1.2. You would want to use something in the same class like a $1600 85mm f/1.4 or a $2200 105mm f/1.4 Nikkor to get similar ...
  • Replied in Matches how?
    That's strange. I'm looking through my 50mm right now and it's like a 5X magnifying glass. Oh, you mean when it's attached to an SLR. That's a whole different thing. It's purely related to the ...
  • The 105mm f/2.5 AI, a lens that is famous for its sharpness, has 5 elements.
  • You can download the manual for his program here: http://www.jonathansachs.me/DoF/ In the documentation, Sachs offers the following explanation: The Sharp Image method This method is based on ...
  • Replied in Matches how?
    In what way does a 50mm lens match the focal length of the human eye? The actual focal length of a human eye seems to be about 17mm; the field of view corresponds to something like a 22mm lens on ...
  • Well, a plastics engineer probably spends most of his time examining failures in plastic parts and looking for ways to prevent them. So it's not surprising that he would have great distrust of any ...
  • Easy as pie. There's a scaling button on my lens design program. Just enter a number and poof, there it is. As has been noted in this thread, you have problems doing this with SLR's because of ...
  • Yes, because the human eye can't resolve a D70 pixel magnified to 8X10 (that would be 8 microns times 13X or about 100 microns) at normal viewing distance. The Jonathan Sachs DOF program you ...
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Total messages 13900
Threads started 27
Last post 1 day ago
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Last post 3 months ago
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Last entry May 6, 2015
Photos uploaded 127
Last upload Jan 24, 2010