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Friday, November 10, 2006

Amusingly Illogical

Some days are more fun than others for the reader of internet photography forums. Today was a fun day. I feel sorry for Leica Camera AG, because they really needed a win and instead seem to have released a digital camera that replicates a problem that manufacturers like Canon and Nikon solved more than half a decade ago. But I savor the illogic of some of the posters on these forums.

You don't have to know the first thing about photography to savor the illogic with me.

As noted below, the problem is that some black objects are recorded as though they were dark purple. Some black objects are recorded as black, and purple objects are recorded as purple. By "recorded," I mean that the camera's sensor tells the camera that the world looks this way.

A number of posters express the hope that new firmware or software can fix the problem. This is conceptually impossible, isn't it? It's a "garbage in, garbage out" situation. The firmware or software could never "know" what which purple objects were really supposed to be black and which are properly purple. The sensor "maps" all purples and some blacks to "purple." There's no programming that will reverse that.

Someone also suggested an "easy fix": just use Photoshop to change all the purple objects in the image black. How do you not consider that some of the objects might really be purple?


posted at 12:04 AM

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