Jeff

Jeff

Lives in United States IN, United States
Joined on Nov 11, 2000

Jeff's recent activity

  • Will that work for a totally manual lens?
  • Intriguing question. Brings back memories of a trip my wife and I did with Encounter Overland back in the day. http://travelogue.ivanhurst.me.uk/00_main_content/background/overlanding.html. Have ...
  • The FM2 was a relatively lightweight, manual, and inexpensive alternative to the F3 of the time.  I know, I bought and used both. It was also rugged, you could take it anywhere. The Df is not these ...
  • Hi Tom,  thanks so much for the kind words.  I do think we have similar photography interests, and would very much like to get over to Georgian Bay one of these days.  I'd also like to try the ...
  • A quick point. To find the impact of diffraction on resolution in 'object space', compare the angle of view to the angular width of the Airy disk associated with diffraction.  Approximate formulae are
  • Yes, the equivalence discussions do get tedious and repetitive.  But once in a while someone new comes along with honest questions, and hopefully someone takes the time to provide them with what ...
  • Replied in Numbers talk ...
    Smartphone sales are conservatively expected to reach 1 Billion per year by 2014, up 40%+ from 2013. That's billion, as in 1,000 times a million. Based on the CIPA reports so far this year, ...
  • Imagine your lens is focused at infinity. Then parallel rays coming into the lens focus to a point on the sensor. So for every point on the sensor there's an imaginary cylinder, with the diameter ...
  • Assuming the crap factor is inversely proportional to the crop factor, I'm hoping for the smaller format. It turns out that Pentax and Fuji also make colonoscopes, and it appears that Nikon and ...
  • My doctor wants an appointment to cram some Olympus optics up my butt for a routine look at my colon. Computational imaging can't come soon enough, if you ask me. Great points, Eamon. The ...
  • I get that.  I went on my own walkabout with my iPhone for a few months this past summer, and found it to be a lot of fun. What I learned is that the people who are good at that are really ...
  • There are important and profound limitations on the ability of current generation smartphones to capture quality images, particularly in difficult lighting. It's like shooting your fancy dslr in ...
  • Hi Renato, This is an excellent point, and I completely agree with your other post in this thread where you say analysts often neglect the BRIC and emerging markets. Not only are these big markets, ...
  • On that same website, you might want to click on the "About Mitsubishi" link. http://www.mitsubishi.com/e/group/about.html.  To save you some trouble, here are two items from that page -- (1) Is ...
  • I'd prefer to phrase this as there is a big difference between knowing and understanding and deliberate ignorance.  You might or might not find these 'equivalence' insights useful to you, fine. Oth ...
  • No feelings are hurt.  I just think you're being narrow minded. Here's the thing. Some folks (I'm one of them) like shooting in multiple formats. Sometimes with a phone, sometimes with a point and ...
  • Getting there. Perhaps a way of sorting this out is to take the perspective of someone trying to make the same image using different cameras. Suppose someone takes a picture of a dog running in a ...
  • This is an impressively wrong interpretation of the Mitsubishi kieretsu .
  • This is actually quite common. A big capital investment, for example, requires up front cash that hits the income statement as a multi-year expense following a depreciation schedule. Obviously ...
  • No, Nikon is not in any sense 'owned by Mitsubishi'. Nikon is part of the Mitsubishi keiretsu -- a horizontally organized group of companies characterized by common banking and insurance providers, ...
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Total messages 4426
Threads started 153
Last post 8 months ago
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Total reviews 1
Last review Aug 15, 2006
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Votes cast 8
Photos uploaded 6
Last upload 11 months ago