In LA

I received my Panasonic DMC-LZ8, and shot a few test photos today. In summary, I’d give the camera an A- for optics, an A for features, a B for user-interface (I have to click how many times to manually set the ISO equivalent?), and a solid D for image processing.

Why that low grade? Because after the camera has responded to the user’s commands, the lens has focused and zoomed, the image has been focused on the sensor, and the sensor has captured an image, Panasonic’s Venus Engine IV software goes to work. It takes the raw image off the sensor, processes it, and writes a file to the memory card. The problem is in the processing — digital images contain some amount of noise, and this noise can be reduced by applying noise reduction algorithms. But there is a downside to noise reduction, as these algorithms reduce the level of detail in the image. Every manufacturer approaches this tradeoff in their own way, but Panasonic’s decision is very unfortunate.

The Panasonic DMC-LZ8 (and apparently most other Panasonic digital cameras) suffers from an overly aggressive style of noise reduction. The user can set the noise reduction to be reduced in one of the camera’s menus, but it can’t be reduced nearly enough, and can’t be disabled. It doesn’t appear to be possible to shoot a photo that is not visibly mangled by Panasonic’s digital noise reduction.

Panasonic’s noise reduction may be useful for photos shot in low-light conditions, as such photos can have enough noise to warrant some smearing of detail in order to make the noise less distracting. Photos shot in bright sunlight should have very little noise and thus require little to no noise reduction, yet the DMC-LZ8 attacks such images with its noise reduction algorithms and leaves them noiseless but also a bit impressionistic, as if they’d been painted with a tiny brush. Definition and fine details are lost in the process. I dialed the digital noise reduction down to its lowest setting and shot a few more sample photos, but the noise reduction was still very apparent.

The problem is not limited to the Panasonic DMC-LZ8, as is attested by this internet petition which asks Panasonic to release a firmware update for several other Panasonic cameras to allow users to choose to disable noise reduction. I would also prefer to disable the camera’s noise reduction feature, because it is easy to apply noise reduction in computer to shots that really need it, and 9 times out of 10 I prefer the organic look of the noise itself to the painterly look of noise reduction.

Gripes aside, the camera seems nice in all other aspects, and for $111 I’m happy with it. It’s small, fast, cheap, and the images are reasonably good (they’d be great if not for the problem noted above). If I’d paid the suggested retail price of $179 I’d probably already be in the process of returning the camera and replacing it with the Canon SD870IS, but at $111 I’m content. I don’t intend to use this as my primary camera. Le mieux est l’ennemi du bien.

This entry was posted on Saturday, August 30th, 2008 at 1:45 am and is filed under Deals, Entitled Ranting, Geeky, Los Angeles, Photos. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.