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segal3

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Posts posted by segal3


  1. Any others I should be looking at, any commentary of the ones listed, or should I just man up and force myself to learn LR? (I am trying the v3 beta and find it rather apocryphal...and I do finite element analysis for electromagnetics with a $50k commecial software tool as my day job!!) I do understand "you get what you pay for" but that doesn't mean there aren't bargains out there I'm just not aware of, yet.

    Richard - Check out IDimager. A very full-featured program, expanding on a lot of functionality that iView Media Pro and Expression Media provided.


  2. Besides cracking, there's also the issue of water pressure bending the dome enough to change the optical properties and give you soft corners. Here's an analysis I did of how a 175mm diameter, 3mm thick dome will deflect at 30m depth

    ...

    You can see that the center of the dome keeps the spherical shape, but as it moves 0.15mm down, the edges of the dome get a funky curvature. I haven't run this deformed shape through zemax, but I would guess that it would give you soft corners when using something with a super wide field of view like the Nikon 10.5mm lens.

    COSMOS? :D To put this all in perspective, the deflection you list is 0.17% of the dome radius (not 1.7% or 17%, but less than one-fifth of one percent). That's a very, very, very small deflection.

     

    I'd be curious to know if port manufacturers are even able to guarantee tolerances that low between production runs...


  3. (Direct gallery link if you prefer to skip the text: Eastern Fields, Papua New Guinea)

     

    Eastern Fields is one of the best wide angle locations I have dived, flush with dense schools of juvenile reef fish through adult pelagics. The Wetpixel group was sure there could be a good amount of critters, as well, but we so rarely decided to use our macro lenses. Gorgeously healthy reefs featured some superb thermoclines during the daily current fluctuations; in the rare spot that wasn't covered by living coral or fish, the current blows past your head with the roar of a strong wind, and endless anthias fight upstream in the breeze. Friendly potato cod pose for pictures at 120 ft, and a very unique wreck contains hundreds of flashlight fish that burst forth from a bulkhead as darkness falls.

     

    20091216_88W5479.jpg

    These bannerfish at first mistook the tiny exhaled bubbles from my regulator for food, chasing after and gulping them down. They soon realized the bubbles were not the plankton they desired ;).

     

    20091212_88W0100.jpg

    Reef sharks were curious and cooperative, approaching divers repeatedly to investigate the strangers encroaching on their territory.

     

    20091216_88W5616.jpg

    Algaes, corals, sponges, fans, fish. What more to ask for?

     

    20091216_88W5604.jpg

    Self-portrait with a large potato cod

     

    I've yet to caption anything, but I managed to piece together a gallery from the expedition (new recent record for me, seeing as how I'm still two years behind on some trips): Eastern Fields, Papua New Guinea.

     

    Special thanks to Eric Cheng, Tony Wu, and Craig de Wit for the organization of the expedition!


  4. (Direct gallery link if you prefer to skip the text: Eastern Fields, Papua New Guinea)

     

    I recently returned from the Wetpixel expedition to Papua New Guinea, and Eastern Fields is one of the best wide angle locations I have dived, flush with dense schools of juvenile reef fish through adult pelagics. The Wetpixel group was sure there could be a good amount of critters, as well, but we so rarely decided to use our macro lenses. Gorgeously healthy reefs featured some superb thermoclines during the daily current fluctuations; in the rare spot that wasn't covered by living coral or fish, the current blows past your head with the roar of a strong wind, and endless anthias fight upstream in the breeze. Friendly potato cod pose for pictures at 120 ft, and a very unique wreck contains hundreds of flashlight fish that burst forth from a bulkhead as darkness falls.

     

    20091216_88W5479.jpg

    These bannerfish at first mistook the tiny exhaled bubbles from my regulator for food, chasing after and gulping them down. They soon realized the bubbles were not the plankton they desired ;).

     

    20091212_88W0100.jpg

    Reef sharks were curious and cooperative, approaching divers repeatedly to investigate the strangers encroaching on their territory.

     

    20091216_88W5616.jpg

    Algaes, corals, sponges, fans, fish. What more to ask for?

     

    20091216_88W5604.jpg

    Self-portrait with a large potato cod

     

    I've yet to caption anything, but I managed to piece together a gallery from the expedition (new recent record for me, seeing as how I'm still two years behind on some trips): Eastern Fields, Papua New Guinea. As always, I appreciate any feedback/criticism of the gallery images.

     

    Special thanks to Eric Cheng, Tony Wu, and Craig de Wit for the organization of the expedition!


  5. Why you wouldn't want to see that same colour in realtime is beyond me.

    I guess the third frame to add would be a natural light 'Magic Filter' version of the scenes to show how we still do see color, even as blue begins to dominate.

     

    Slightly more difficult to get all three shots at once, though! :)


  6. If you keep your camera set to motor-drive, you may end up with photographs taken in the moment between strobe recycles, with dim foregrounds and dark silhouettes. I used to flag the accidental captures as destined for the trash, but recently, I've found a more useful purpose for the otherwise unimaginative images. In animated GIF format, they can quickly convey to friends and family just how the underwater environment could appear if not for our artificial illumination.

     

    A few samples from the recent Wetpixel expedition to Eastern Fields, Papua New Guinea:

    LightNoLightPNG1.gif

     

    LightNoLightPNG2.gif

     

    LightNoLightPNG3.gif

     

    Perhaps others might have similar examples they'd be willing to show off?


  7. Where's the run program window?

    Why use it anymore?

    Start key. Type whatever you were going to do. Hit enter.

     

    Or you can be slow...Start key. Type "run". Type whatever you were going to do. Hit enter.

    Or you can be really slow and enable the Start menu "Run" item in customization options, of which there are many...but why?

     

    Aside: I would suggest the majority of all BSODs are caused by using the 'Upgrade' option between operating systems (WinXP->Vista->7) instead of doing a clean install...wipe that old system out entirely and start new. You'll be much more stable...


  8. I've switched to OSX (Leopard and then Snow Leopard)...and then back to XP SP3/Windows 7 x64.

     

    Windows 7 is a major improvement, and I'd hold on any decision until you have a chance to play with it.

     

    Some thoughts: If you'd prefer to use specific software only available for OSX (Final Cut Pro, Aperture, etc), then by all means go with Apple. My own decision was driven by the fact that, for comparable hardware, most cross-platform software seemed to run faster on Windows (Adobe, Canon, MATLAB (benchmarked 2x faster)), not to mention engineering-specific applications that are only available on Windows. Boot Camp/Parallels is a poor option when attempting to maintain a RAID array for media storage, as neither side reads the other's format, restricting file access unless you're willing to copy to a temp. folder.

     

    I agree with Jeremy - if people other than yourself are going to be using the computer, and you'd prefer not having to follow the Tech Support Cheat Sheet, then you may be better off with an Apple. But, you may have to follow it then, too ^_^.

     

    YMMV.

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