Showing posts with label panasonic gh1. Show all posts
Showing posts with label panasonic gh1. Show all posts

Sunday, January 09, 2011

Only in Threes



Three seagulls perch at the San Francisco Zoo, Saturday, January 8, 2011. While free to come and go, the birds seem to choose a steady diet of dropped French Fries over what they can find at the nearby shoreline.

Thursday, January 06, 2011

Whether



Above: A runner passes a puddle in the Marina District, Thursday, January 6, 2011. This winter San Francisco has lived up to its reputation for rapidly changing weather.

Tuesday, January 04, 2011

Word on the Street, Double Feature Edition




One of the things I'm not sure photographers fully appreciate yet about micro four thirds format cameras like the Panasonic GH1 and Panasonic GH2 is that you can essentially work with a 100% viewfinder. If you see it, that's exactly how it will appear in the final image. That makes working with edges much easier, really. If you want a crack in the street exactly at the bottom of the frame, just compose it in the viewfinder as you like.

Above: two snaps north of Fillmore Street today.

Monday, November 29, 2010

Hybridity



It's interesting to me to observe this endless cycle: folks get excited about a new technology for making images, obsess about it, talk endlessly about all the new capabilities it will provide, then make the same old thing they did before.

It looks better, but it's the same thing, really.

Then they quickly decide the formerly new technology is now old, and move on to the rumored new thing that will allow them to finally do their work.

Sunday, October 31, 2010

Best ... Bargain ... Ever: Panasonic GH1 at $500

The Panasonic GH2 will be released soon. It will probably be a little tough to get at first, but it will be on camera store shelves soon enough.

So stores that still have the Panasonic DMC-GH1 available have dropped the price to an unbelievable bargain level. It's a heck of a camera for the price, especially if your interest is working with DSLR video. (I've shot several projects with the GH1, and find it a very capable camera and the most flexible for documentary-style work.)

Saturday, October 30, 2010

Panasonic GH2 Tele Conversion: Bagful of Primes?


Panasonic GH1 1080p Camera Test from Ted Fisher on Vimeo.

I have a hacked Panasonic GH1. It works great, and it's great to be able to work with a camera that's so small and light. The Panasonic GH2 is shipping soon, and it has a few key improvements -- it should be better for low light video, for example.

There's one advanced feature that's really intrigued me, though, that might end up a fantastic bonus for documentary shooters: the Tele Conversion feature.

The idea is that video on a DSLR is recorded at either 1920 pixels by 1080 pixels (1080p) or 1280 pixels by 720 pixels (720p) -- but the camera's sensor is really closer to 5000 pixels wide. So these type of cameras are reading the 5000 pixels and doing some number-crunching to downsize and output a frame 1920 wide or 1280 wide.

The Tele Conversion, however, seems to mean essentially cropping to a 1:1 ratio -- grabbing the center 1920 pixels by 1080 pixels rectangle -- and using that for the recorded frame. This results in a lens acting as if it were had a focal length 2.6 times longer (if you are recording 1080p) or 3.9 times longer (if you are recording 720p).

Well, this has been mentioned in the previews of the camera, and generally the reaction is "Great. That will provide amazing telephoto reach." That's true: the long end of the HD zoom is 140mm, and that would now act (in 1080p) as if it were a 364mm focal length. (The equivalent, on a fullframe 35mm camera would be a 728mm lens.) Or the Tele Conversion results in your 14-140mm now acting like a 546mm lens if you shoot at 720p/60 (typical for sports shooting), which is equivalent to a 35mm fullframe camera with a 1092mm lens. Hmm.

That's all well and good. But here's what I think is exciting:

You get your Panasonic GH2. Tiny, light, ready to travel. Now, buy the Panasonic LUMIX G 20mm f/1.7 Aspherical Pancake Lens and the Panasonic Lumix 14mm f/2.5 G Aspherical Lens for Micro Four Thirds Interchangeable Lens Cameras.

The 20mm goes for about $333 these days, the 14mm is about $400.

They are both tiny tiny tiny, light light light. The camera and these two lenses will fit in a very very small bag and will hardly weigh anything at all.

Here's what happens if you use the Tele Conversion feature, assuming it works well.

Put on the 14mm f/2.5 lens. This is great for wide shots -- equivalent to a 28mm lens on a 35mm camera. But if you turn on the Tele Conversion while you are shooting 1080p / 24, suddenly the lens acts like a 36.4 mm lens (72.8mm in 35mm equivalent).

Put on the 20mm f/1.7 lens. This is great for "standard" shots -- equivalent to a 40mm lens on a 35mm camera. But if you turn on the Tele Conversion while you are shooting 1080p / 24, suddenly the lens acts like a 52 mm lens (104mm 35mm equivalent).

So that means you could travel with a tiny camera and two pancake lenses, and have the equivalent of these prime lenses (considered in 35mm equivalent focal length).
  • 28mm f/2.5
  • 40mm f/1.7
  • 72.8mm f/2.5
  • 104 mm f/1.7
So: a bright wide, a very bright standard, a bright medium portrait, a very bright long portrait.

Check out Elliott Erwitt's Camera Case, Circa 1974 and you'll find out what he carried:
"Inside the case: two Canon F1s, a complete set of prime lenses (17mm, 24mm, 28mm, 35mm, 35mm tilt/shift, 50mm, 100mm, 135mm, 200mm and 300mm), a cable release, a Minolta light meter and an Eastman Kodak "Pocket Guide to Photography."
Hmm. Getting there, with just two tiny pancake lenses. (Erwitt's case must have weighed a ton, no?)

So add a Olympus 17mm f/2.8 Lens. These are going for about $260 right now, and again: tiny and light.

So the Olympus is 17mm, which acts on a Micro Four Thirds sensor about the same as a 34mm lens on a fullframe 35mm format camera. Hit the Tele Conversion button, and it acts 2.6 times longer, or as if it were a 88.4mm lens. This brings your range of primes to:
  • 28mm f/2.5
  • 34mm f/2.8
  • 40mm f/1.7
  • 72.8mm f/2.5
  • 88.4mm f/2.8
  • 104 mm f/1.7
So: with two Panasonic Lumix DMC-GH2's and three tiny pancake lenses -- all extremely small and lightweight -- you can get a broad range of focal lengths in bright, high-quality prime lenses.

Now, Erwitt's got some longer lenses there as well, but so consider adding Panny's new Panasonic Lumix 100-300mm f/4.0-5.6 G Vario Aspherical MEGA OIS Lens for Micro Four Thirds Interchangeable Lens Cameras. That provides a range, including a 100mm / f/4 end (the 35mm equivalent is 200mm) that Tele Converts to 260mm / f/4 (in 35mm equivalent, that's 520mm).

Now, remember: this Tele Conversion feature is brand new. No one has reported on the quality yet, though in theory there's no reason it might not actually be better than "regular" video recording. And that's the key factor: it works on video, not stills.

Still, it's fairly amazing to think of what a documentarian today could pack into a small case or backpack. And when the new Voigtlander 25mm / f0.95 ships....

Friday, September 03, 2010

GH1 1080p Camera Test (After Firmware Hack)

Panasonic GH1 1080p Camera Test from Ted Fisher on Vimeo.

Previously, I posted a one-minute video showing a "Stress Test" of the Panasonic GH1 in video mode.

For that, I shot 720p / 60 footage in Central Park -- and found generally great results, but that the camera clearly had its limits. A sharply-focused shot of highly-detailed trees combined with camera motion could hit the limit of the codec -- resulting in "mud" in the shot. (That is, poorly-resolved digital smearing. Think of a low-resolution JPEG.)

On the plus side: most footage turned out great, and if you planned your shooting you could get excellent HD video without some of the issues (moire, for example, and false detail) that the Canon HDSLR cameras were reported to be experiencing. (And the Panasonic allowed twice as much footage per gigabyte of memory, had no need for a specialized add-on viewfinder, could autofocus during video, presented a live histogram -- and so on.)

Since moving to Los Angeles I've applied the supersecret firmware hack to the camera. (Google it. I'll post more on the details soon.) So I decided it was time to test out the 1080p / 24 mode as well.

For this shoot -- purposefully handheld, shaky, and shooting subjects that tended to bring out "mud" in the stock GH1 -- I used lpowell's "40Mbps AVCHD High Reliability Patch" settings, recording 1080p/24 AVCHD clips. I then processed the MTS files using Voltaic and edited those transcoded clips with Final Cut Pro. I exported a 1080p QuickTime file, then used compressor to create the 1280 by 720 file I uploaded to Vimeo.

My thoughts: the "40 reliability" settings are excellent in quality and stable enough for documentary shooting. As well, all clips play back in camera. Follow the link to Vimeo if you want to download the 720p version -- but trust me that the full 1080p file is even better.

Sunday, June 20, 2010

Merman



Over on my other blog I've posted a snapshot from this year's Mermaid Parade. Above: the King of the Sea.

Tuesday, April 20, 2010

Camera Test A

Panasonic GH1 "Stress Test" A from Ted Fisher on Vimeo.

My first session with the Panasonic GH1. The goal of the shoot was to find the camera's limits. Everything was shot handheld, seeking out conditions which might prove difficult on this type of hybrid system.

So I shot quite differently than one normally would. Rather than panning smoothly, avoiding shots with extreme or complex detail or aiming for the often-recommended shallow-depth-of-field look, I aimed to make the camera struggle.

I think it performed very well. The next test will include quite varied conditions and a different style of shooting. I'm hoping to do a low-light test as well.