Camera Software Lets You See Into the Past

Computational rephotography is a fancy name for photos taken from the exact same viewpoint as an old photograph. Actually, that’s just rephotography. The “computational” part is when software helps out.

I’m a sucker for photos of old street scenes. Seeing familiar parts of your city as they were many decades ago is fascinating, and if people are good enough to snap a new version, you can enjoy the differences of places you have never seen. At Flickr and a site called Historypin, you can see the old shots lined up over the new, like a window into the past.

Researchers at MIT have found a way to automate the process. Currently, they use a laptop to do the heavy lifting, but the software could just as easily sit inside a camera. In fact, that’s the plan. The system compares the scene in front of the camera with a historical photograph. It then works out the difference between the two and gives the photographer instructions along the lines of “up a bit, left a bit more.”

According to an abstract on rephotography, it is a lot more complicated than it seems. In lining up the images you must consider “six degrees of freedom of 3-D translation and rotation, and the confounding similarity between the effects of camera zoom and dolly.”

Gimmick? Sure, but then so are all manner of the features in the modern digicam, from smile-detection to facial-recognition to fancy sepia modes. Today’s camera is essentially a computer with a sensor and a lens, so why not pack in everything you can? And if it means getting to see more old-time streets scenes, I’m totally in.

Camera app puts you in the footsteps of history [New Scientist via Alex Madrigal]

Computational rephotography [ACM]

Photo: Nomad Tales/Flickr

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Flash: The Strobist’s Guide to Slaves

David Hobby, the man responsible for re-lighting the enthusiasm for off-camera flash (and driving up second-hand prices of the same) has turned his lens on slavery. Not the unpaid servant kind, but the flash-triggering kind. A new article over at the Strobist blog (which you really should be subscribed to) details the different kinds of slaves, and how they work.

A slave unit is a simple trigger which closes a switch when it sees another flash. Thus, you can control many flashes from afar without wires. And while the operation is all-manual, slaving an old flashgun is way cheaper than buying the auto-everything strobes from Canon and Nikon.

There are two kinds: passive and powered. Read David’s excellent (and entertaining) post for the full run down, but the short form is that you should avoid passive units, which rely on gathering enough photons through their eyes to fire a trigger, and go for the powered units, which are a lot more sensitive. The best option is to only buy speed-lights with built-in slaves, as you don’t then have to drop extra cash on expensive adapter dongles.

A flash like the LP160 (which we reviewed a couple weeks back) is ideal. It’s cheap ($160) and the slave unit popped the flash every time in testing.

Failing this, you should buy the most expensive slave unit you can afford, otherwise you’ll suffer the rage-inducing frustrations of missed exposures. David tells us where to buy, and what buzzwords to look out for. Go read the article, and wait for part two, which will tell you how to get the most out of your brand new toy.

Understanding and Using Optical Slaves, Pt. 1 [Strobist]

Photo: Charlie Sorrel

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Nadia Camera Offers Opinion of Your Terrible Photos

If things carry on like this, then soon cameras won’t even need human beings to take a photograph. We’ll be relegated to a means of transport, our soft meat-sacks merely following orders from the machine and pointing it in what ever direction it tells us. The Nadia camera, a device which rates you photos for you, even has a human name, all the better not to scare us.

Instead of an LCD screen to check your pictures, the Nadia judges them for you and assigns a percentage score using the automatic rating engine Acquine. It does this even before you press the shutter, allowing you to compose and recompose, with Nadia offering an electronic opinion every time. When you judge the number to be high enough, you press the shutter and take the snap.

Nadia doesn’t even contain a proper camera. Inside the black box is a Nokia N73 cellphone which talks to a nearby Mac via Bluetooth. The Mac sends the image off to Acquine’s “aesthetics inference engine” on the web and gets back a score, which it then displays on screen. Somewhat ironically, submitting the photo of the Nadia to Acquine gives a score of just 32.5%, while a screenshot of this article in draft scores a wondrous 45.5%.

The project, by Andrew Kupresanin, is clearly just an experiment but as we rely more and more on our cameras to automate the photography process, it’s not hard to see almost completely autonomous cameras in the near future.

Nadia [Andrew Kupresanin via Oh Gizmo]

Acquine [Acquine]

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Death of Film: Last Roll of Kodachrome Processed

What do you know about Dwayne’s Photo Service of Parsons, Kansas? It is the place where the very last roll of the Kodachrome was processed.

Kodachrome, the slide-film that inspired songs, was discontinued by Kodak last year at 74 years of age. The color emulsion was a victim of its own weird processing requirements, which didn’t use the usual E6 chemistry designed for transparency film, and therefore wasn’t worth supporting in the age of digital.

The last roll was shot by National Geographic photographer Steve McCurry, who shot the 36 exposures in New York (actually, the last three shots were exposed in Parsons before dropping off the film at Dwayne’s). The pictures will be part of a National Geographic piece in the near future.

McCurry’s film may have been the official last roll off the production line, but Dwayne’s will still process any Kodachrome that you might have until December 10th this year. And then it will shut down, forever. People may still shoot analog, but with the death of Kodachrome comes the spiritual death of film.

Last Kodachrome roll processed in Parsons [Wichita Eagle via Retro Thing]

Photo: Fay Ratta/Flickr

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Camera+ for iPhone 4 Adds Flash, Exposure Control

Camera+ for the iPhone is another case of a third-party app doing things better than Apple itself. It’s an all-in-one photo-taking and editing application that improves on almost every aspect of the built-in camera app, and it has just gotten a slew of new features with a v1.2 update.

While the post-processing tricks are nice (cropping and special effects) it’s the shooting tools which impress. New in this version is flash control, which lets you switch on the iPhone 4’s LED lamp, either as a quick flash or as a continuous light (useful to get an idea of where the shadows will fall). Also very useful is the separation of exposure and focus. In Apple’s app, you tap the screen and the iPhone sets both exposure and focus on that spot. With Camera+, you can set these independently, still by tapping, for finer control.

The focus also goes from “tap” to “touch”. This subtle difference lets you smoosh your finger around the screen and the focus point will follow. This lets you follow things without constantly tap-tap-tapping.

There also bug fixes and tweaks fixes, most notably a speed increase when shooting, uploading of proper metadata to Flickr and better image stabilization. Best of all, the app is just $2. Available now.

Camera+ [iTunes]

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Panasonic Launches LX5 and a Zillion Other Compact Cameras

Panasonic has released five new compact point-and-shoot cameras, ranging from the $250 TS10 up to the $500 LX5, whose premature store listing we covered yesterday. Instead of just running over the specs of the lineup, which would probably be even more boring for you than for me, we’ll take a look at the highlights, starting with the LX5.

The LX5 replaces the two-year-old LX3, but the similarities are bigger than the differences – the sensor is the same 10.1 MP CCD with tweaked sensitivity, for example. New is the redesigned hot-shoe which will now work with an optional electronic viewfinder, as is the ƒ2.0 lens, which now runs from 24-90mm instead of stopping at 60mm (35mm equivalent). Also new is a bigger grip and a GF1-style click-wheel instead of a joystick and the addition of the AVCHD-Lite format for recording 720p video. The price will be $500.

Next in line is the big fat FZ100, the new top-end hybrid which offers the bulk of an SLR with the trimmed-down functions of a compact (seriously, why does anyone buy these?). It has a 3-inch, 460,000 dot tiltable LCD, a too-big 14MP sensor and a huge 25-600mm (equivalent) zoom which opens to ƒ2.8-5.5 as you zoom. That’ll be another $500.

The $400 FX700 can be described as “competent”. It will fit in a pocket, shoot 1080i AVCHD video and 14.1MP stills and show them off on a 230,000-dot LCD, which is also touch-sensitive and does away with most of the buttons. The lens is a decent ƒ2.2-5.9 zoom with an equivalent focal length range of 24-120mm.

Skipping to the bottom-end we get to the $250 TS10, a ruggedized camera with yet another overcrowded 14.1MP sensor, which is waterproof to ten feet and can be dropped from five, shoots 720p video and has a zoom equivalent of 35-140mm. The aperture range is a pitifully average ƒ3.5-5.6.

Phew. The standout here is clearly the LX5, unless you want a bigger camera with a bigger zoom, in which case you should probably just go buy a cheap Canon or Nikon DSLR. Otherwise, buy any of these Panasonics, or any camera from any other first-tier manufacturer. Let’s be honest, they’re all pretty much the same.

LX5 [Panasonic]

FZ100 [Panasonic]

TS10 [Panasonic]

FX700 [Panasonic]

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Panasonic Lumix LX5: I Want This Awesome Camera So Badly [DigitalCameras]

Panasonic’s Lumix LX3 was deeply coveted by camera nerds, a groundbreaking point-and-shoot that gave up megapixels for incredible photos. The LX5 is its sequel—and it’s the first camera that might knock the S90 out of my pockets. More »

Panasonic ‘Leaks’ New LX5 Digicam

It’s tempting to call this information a leak, but when Panasonic posts a new camera in full on its store, and then leaves it there, its more of a “stealth launch” than a leak. The camera in question is the LX5, the successor to the well-regarded LX3.

The LX3 is Panasonic’s high-end point and shoot, characterized by a high-ISO, low-noise sensor and a fast, wide Leica lens, opening to ƒ2.0 and 24mm. The new LX5 keeps the same 10.1 MP sensor (although adds a wishful ISO 12,800 to the top end of sensitivity) and the same fast and wide maximum lens settings, but makes a lot of tweaks to an already very good camera.

First, the lens can now zoom out to 90 mm (against 60 mm) but the maximum aperture drops from ƒ2.8 to ƒ3.3 at the long end (still better than the widest aperture on most point-n-shoot cameras). The shutter speed now tops out at 1/4000th sec (previously 1/2000th sec), there is an option to use an electronic viewfinder (the LX3 only had an add-on optical finder), a jog dial instead of a nubbin for manual-focus, and the LX5 gets HDMI-out and VieraLink outputs.

There are other small changes, but they are incremental and incidental. What about price? As the LX5 has yet to appear in the Panasonic store, we can only guess. And my guess is that it will replace the LX3 and cost the same $500 RRP.

LX5 product page [Panasonic]

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Panasonic Lumix LX5 outed by tech support page, improvements are black and white

Panasonic may be pushing Micro Four Thirds tech these days, but that doesn’t mean it’s forgotten about the pocketable high-end — in fact, full spec sheets and pictures have just leaked from the company’s technical support website, detailing the unannounced latest in the Lumix LX lineup. The 10.1 megapixel DMC-LX5 doesn’t have any revolutionary new features, sadly, but it certainly brings the 2008 LX3 predecessor up to spec in nearly every way, with a longer 3.8x optical zoom lens by Leica, 12,800 ISO mixed-pixel sensitivity and a familiar-sounding AVCHD Lite 720p video recording mode. Slightly heavier due to a larger 1250mAh battery, the camera supports SDXC memory cards this time round, has an anti-glare coating on the 3-inch LCD and thankfully replaces those bulky breakout component cables with a mini-HDMI out. There’s also an optional electronic viewfinder and a jog dial on the back, but we don’t want to ruin all your fun unearthing these gems; peruse the specs yourself at our source link.

Panasonic Lumix LX5 outed by tech support page, improvements are black and white originally appeared on Engadget on Sat, 17 Jul 2010 14:07:00 EDT. Please see our terms for use of feeds.

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Gorillapod-Inspired Tripod Looks Like Robot Skeleton

Clearly “inspired” by Joby’s popular Gorillapod, the RM-110 Spide (yeah, we know: spelling fail) from Fotopro is another flexible, ball-jointed camera tripod. Unlike the Gorillapod, the Spide looks like a Terminator’s skeleton.

The Spide has a few other differences. First, the feet are interchangeable. You can choose from spikes, suction cups, magnets and regular soft-stepping rubber. Another addition is locking balls: The Gorillapod hangs on tight enough, but the Spide’s joints can be completely immobilized by clamping them shut with a screwdriver. This is probably less useful than it sounds: one of the best features of the Gorillapod is that it is so quick to deploy.

I wonder, too, about the build quality. A look at Fotopro’s site isn’t exactly confidence-inspiring. Amongst the odd sections (“shooting-sticks” and “working sticks”) you’ll such wonders as the “Charming Red Tripod” and the “Self-Fotor“. If you’re interested, the Spide will make it onto US soil in the last part of the year, for around $60. Those of you who are annoyed by bad spelling might want to save up a few Rs (or even a Y) in the meantime.

Fotopro’s fully adjustable flexible tripod with interchangeable feet [Gizmag]

Product Site [Fotopro]

Image credit: Gizmag

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