3.25.2009
And now, I remind you of something best forgotten.
3.12.2009
OK, so maybe it's Form 1, Function 0
3.11.2009
New iPod Shuffle: Form 2, Function 0
2.24.2009
Misused photography terms that bug me
I try to keep my impulses to correct other people's grammar and diction on a pretty tight leash, but there are two words in the photography world that I hear misused a LOT. And it bugs me.
Sorry, but I am about to vent.
"STROBE" - Arguably the best photo lighting blog on the 'net is the STROBIST blog. I'm not knocking anything about this blog. At all.
Except the name bugs me.
The Strobist has a built a great brand and appears to be living the dream of a monetized blog. It would be stupid of me to suggest or for the Strobist to ponder changing the name. But he's not talking about strobing.
"Strobe" is short for the word "stroboscope." This, by definition, means a series or short, bright flashes of light at intervals which can be used to record movement of an object, or to make a rotating object appear to be stationary, such as with an automotive timing light. There is a rather famous photo of a golf swing recorded with strobe, with the club seeming to make a sort of peacock fan around the golfer. In the 1970's, strobes were also used to illuminate the spastic gyrations of dancers wearing hideous clothing in places once referred to as "discoteques."
So, what the strobist writes about is "portable electronic flash photographic lighting." But, of course, "Portable Electronic Flash Photographic Lightingist" would be a crappy name for a blog, so forget it.

"PRIME" - In recent years, photo related internet discussion groups and forums have lit up with discussion of the pros and cons of fixed-focal length (non-zoom) lenses, which way to many people insist on calling "primes." There is such a thing as a "prime" lens, but most lenses people refer to as primes, aren't.
The prime focal length, as I can recall from Joseph Costa's Advanced Photojournalism class back at Ball State University, is the lens focal length which will closely reproduce a person's normal field of vision. That is, objects viewed through a prime focal length lens do not appear to be closer to the viewer or farther away. You can calculate the prime focal length for various film and digital sensor formats thusly:
Square root of ((width of sensor/film format squared) plus (height of sensor/film format squared))
Examples:
Prime focal length for 35mm film or FX (full-frame) digital sensors (24mm x 36mm):
(24*24) + (36*36) = 1872, square root of which is 43.27mm. Of course, 50mm is generally considered to be "close enough" to prime for this format.
Prime focal length for APS-C digital sensors, such as Canon 40D (22.2mm x 14.8mm):
(22.2*22.2) + (14.8*14.8) = 711.88, square root of which is 26.68mm. Sigma markets their 30mm ƒ/1.4 lens as a "prime" for this sensor size. Personally, I'd lean toward the Canon 28mm ƒ/1.8, since it would be usable on all EOS cameras.
So, a 50mm on a Canon 5D or Nikon D3/D700 would be considered a prime lens. The same lens on a Canon 40D or Nikon D300 would not be a prime, but a short telephoto. Likewise, a 28mm/30mm lens on a Canon 40D/Nikon D300 would be a prime, but on the Canon 5D or Nikon D3/D700 would be a wide angle.
A 300mm, although not a zoom, is also not a prime lens unless you happen to be using it on an 8"x10" view camera.
I can actually accept using "strobe" as a slang-ification when referring to single-pop flash lighting. I've been guilty myself of making reference to "strobing the IUPUI natatorium for a college swimming meet."
But I have to hold the line on "prime."
2.19.2009
Pylons and Sleestaks and Dinos . . . Oh my!
If you are in roughly the same age bracket as me (mid-forty-ish), "Land of the Lost" was probably part of your Saturday mornings as a kid. This 30-minute show hit the airwaves when I was about 9. This is the age when cartoons start to become a yawn, and in the early 70's, Saturday morning "kidvid" started an awkward transition into more live action shows. To throw out a few titles, "Run, Joe, Run", "Westwind", "Shazam!", "Isis", "H.R. Pufnstuf", "Lidsville", "Sigmund & the Sea Monsters", and "Land of the Lost". Production values on these shows generally ranged from 'bites hard' to 'total suckage.'
Those last four titles I mentioned were all produced by brothers Sid and Marty Krofft and were probably the best of a bad bunch. And "Land of the Lost" was the baddest of the bad. And by "bad", I mean what passes for "good" in this context.
I caught a few of the old episodes of "Land" on cable several years ago. And brother, they have not worn well. The nostalgia center of my brain wants to remember this show as a shining achievement rising high above the rest of the Saturday morning schlock. But face it, fellow forty-somethings, the dialog sucked,the special effects sucked, and the acting sucked (or was at best intentionally very campy).
But I mean all that in the best possible way. Producing a show like "Land of the Lost" for Saturday morning in 1974 was an exercise in insanity. The state of the art of special effects at the time was nowhere near capable of creating believable live-action footage of actors interacting with dinosaurs, especially on a per-episode budget that probably wouldn't cover the cost of lunch on the set of a prime-time drama of the day.
But they did it anyway. The Kroffts attempted what they had to know was impossible, and that is often the Genesis of genius.
While the producers may have skimped on acting talent and been hamstrung on special effects, they deserve credit for laying out the dough for quality writers. "Star Trek" and science fiction fans will know some or all of these names: David Gerrold, Margaret Armen, Larry Niven, Ben Bova, D.C. Fontana, Norman Spinrad and Theodore Sturgeon. And even if the acting and production fell short of potential, there were smart science fiction concepts in play and a well-developed and consistent "universe," although writing and continuity slipped noticeably in the last season.
Well, people, get ready for a not-so-routine expedition. "Land of the Lost" is back. Or it will be this June at a theater near you. Depending on what you want this movie to be, the fact that Will Ferrell is in the starring role is either very good news or very bad news. I would describe Ferrell as highly talented, but his appeal to me personally is uneven at best. The "More Cowbell" skit on Saturday Night Live? Genius. "Kicking and Screaming" and "Blades of Glory"? Not so much.
If you wanted "Land of the Lost" re-done in serious mode with state of the art CG special effects and script treatment worthy of Stanley Kubrick and Arthur C. Clark, this assuredly won't be it. I suggest you try getting your dino fix by renting "Jurrasic Park" again.
Based only on the trailer on the official site, it appears to me Ferrell may be hitting the right notes on this one. There's a Marshall, there's a Will, and there's a Holly (although they aren't father, son, and daughter this time around). There are dinosaurs and Sleestaks. There's a "greatest earthquake ever known." There are three moons and monkey people. We can see giant walnuts, giant mosquitos, and it appears the characters kill a giant crab in self defense and eat it with a squeeze of juice from a giant lemon. Concepts from the original show such as the Lost City and the Sleestak Council of Skulls seem to be present as well. The cast listing for the new movie at imdb.com lists a Chaka, an Enik and no less than 26 Sleestaks. Possible references to specific episodes of the original show are suggested by the viking ship visible in the trailer, and characters in the cast that include two "Tar Pit kids" and an "Astronaut."
Don't see any pylons, skylons or light crystals yet, though. Hmmm. . .
"Must see" movies are few and far between for me these days, but 2009 promises at least two of them so far: the re-boot of "Star Trek", and "Land of the Lost".
(NOTE: click the picture at the top of the post and you will be taken to the full size image file. This is the downloadable wallpaper image from the official site modified to fit wide screen laptop-style screens - 1440x900 pixel size. Right-click it and enjoy.)
2.17.2009
Big doin's at PocketWizard
There was some chatter on the Paul C. Buff forums recently that PocketWizard would make a big announcement soon. Like I usually do when I hear such a thing, I religiously checked their website for several days and when I keep seeing same old same old day after day, I gave up checking one or two days before "THE EVENT." (Seriously, I must have pinged the Canon website for 60 consecutive days, but gave up on it exactly two days before the 5D Mark II announcement.)
The event in this case is the announcement of the MiniTT1 transmitter and FlexTT5 tranceiver radio flash triggering devices. The news here is that these units allow TTL flash operation over wireless RF channels, which will be much more reliable than the about as expensive but dicier infrared wireless systems marketed by Nikon and Canon. For starters, this system is for Canon only, but Nikon-compatible gear is on the way. I won't re-hash features of the units here, as they are covered very well at the Strobist blog.
Personally, I've never been particularly happy with the consistency of results I've gotten with TTL flash equipment. Being an old hand (a VERY old hand) with manual operation of Vivitar 283's, I'm more pleased with the results I get working in "old school" manual. Therefore, I nearly said "big deal" at the news and went on with my day.
But, fortunately, I read on.
These units have the capability of operating in what is called "Hypersync" mode. This is of high interest to sports shooters like myself because it MAY allow using higher flash sync speeds with studio flashes triggered by these units. The power of my AlienBee's B800 units are "just enough" for some of my arena lighting situations, so the ability to cheat the shutter speed upward to cut out a little more ambient light could prove huge in certain situations, such as the IUPUI Natatorium (below).
The manual for these units says mileage may vary with different flash equipment and different cameras. Therefore, I will need to finagle a test situation to figure out if I can squeeze, for example, 1/400 or 1/500 sync speed with my Canon 40D (1/250 stock sync speed), but every single click upward on the shutter speed is a win-win in helping to cut back the ambient light to eliminate ghost imaging in arena situations. And if I read the manual correctly, it will work my my existing PocketWizard Plus II's. This is extremely cool, as it will keep the cost of adoption down by only requiring me to purchase a MiniTT1 transmitter. I may be interested in a FlexTT5 tranceiver later, but that can wait since my interest in TTL operations ranges from limited to non-existent.