ctlow

ctlow

Has a website at ctlow.ca/photog
Joined on Jan 20, 2013
About me:

Amateur photographer since 1970s semi-pro in semi-retirement.

ctlow's recent activity

  • Pikyou, another possibility is that you've done the one-step back part of the the two-steps-foward-one-step-back pattern of progress. It would be easy to blame the equipment, when the vast array of ...
  • This kind of thread is just discouraging, and many people will find it when deciding on brands. I've got to say that service is fantastic in Canada. I even figured out an email address and have ...
  • Replied in Heathaze
    Atmospheric haze is a more general term, heat haze (or shimmer) more specific (according to the Google).
  • Replied in Heathaze
    I.e., not cause shimmer. Can you amplify? Book learning? Experiential?
  • Replied in Heathaze
    If you're able to post some photos from both lenses, it might help clarify the situation. Charles
  • Replied in Heathaze
    I did a 10-minute Internet search and didn't come up with anything supporting humidity as a factor in heat-shimmer. I did come up with humidity as a factor in atmospheric refraction. Refraction ...
  • Replied in Heathaze
    JP, another thing, can you comment more about the humidity effect on heat shimmer? I hadn't heard that before - only heat and therefore swirling, rising masses of different-density air. Charles
  • Replied in Heathaze
    JP, you're right very strictly that focal length itself doesn't cause heat shimmer, but it is undoubtedly true that telephoto compression does. Think of any little slice of heat-shimmering ...
  • Replied in Heat-haze
    Coincidentally, here's a thread in another forum about how happy someone is with his new telephoto: http://www.dpreview.com/forums/post/57803197 The magnification he ends up with is about 17x. (I ...
  • Replied in Heat-haze
    Hello again, BlueDragonFS, I wish someone else would chime in and either verify or refute my observations. I'm sure that I'm correct in my basic assertion that shimmer (of any kind) is simply in a ...
  • Replied in Heat-haze
    BlueDragonFS, hello. I have added a hyphen to your word, which is probably just left as two words: " heat haze ". First, yes some of those photos you refer to do show heat shimmer (a synonym). It's ...
  • I'm glad you perceived utility, and I note that I used the wrong abbrev. for Oly's highest-quality JPEGs, which I think everyone realized: it's "LSF", as others have said. Also, pardon if ...
  • Gracious, that's what I thought was an obvious question until I read what others have answered. Very informative. When I first converted to digital, I set my "snapshot" "MySet" (an Olympus menu ...
  • Zounds, Ericsphotos, that's a big question. It's a little like asking someone to describe how to drive a car in three paragraphs. I bumped into a lighting tutor recently, and have had my horizons ...
  • ClutchFan, great thread, interesting replies to date. I agree with those who said that 1/800 should have been enough. If my calculations are correct then 600mm on that camera is roughly 900 mm on a ...
  • That's a good point about focus peaking. It depends on a digital-not-optical display. That could be an LCD screen although I also now have a electronic viewfinder. My camera also ...
  • Marty, that's a great summary. Thank you. Now, about Panasonic lenses: I for example have a 25 mm f 1.4 Panasonic ... Lumix Summilux Leica D Aspherical ... i.e. it's got a lot of names attached to ...
  • Bagold, I note that It's been about a week and you haven't had a direct answer to your specific question. I did a Google search under "Lightroom seminars" and quite a bit popped up. It might help ...
  • Thanks, Rusk. Good added info. The plot around the "R" designation thickens. The fellow I referenced didn't ... give a reference! I was about to argue about the explicit "digital" labelling, ...
  • I'm going to repeat some previous answers, for obsessiveness: -lenses called "Zuiko" are for the earlier Four-Thirds ("FT") lens mount, and "m.Zuiko" are for the current micro-Four-Thirds ("mFT") ...
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Total messages 213
Threads started 17
Last post 5 hours ago
Total comments 4
Total likes 4
Last post 1 month ago
Total reviews 8
Last review Aug 26, 2014
Entries 3
Votes cast 134
Last entry Dec 6, 2014
Photos uploaded 4
Last upload Dec 6, 2014