M8's accuracy

[Manolo Laguillo]

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I was callibrating my LCD screen with the help of a ColorMunki device, and so I came to the idea of testing the accuracy of both the metering system and the shutter mechanism. I started the calibration procedure after doing a manual white balance adjustement on the screen, and began photographing it when it changes color (green, red, blue, gray) and luminosity (from bright and vivid to dark and somber), you know what I mean.

In each group of colors the pictures are exactly the same, with no differences between them: all the reds are the same, as are all the greens, all the blues, and all the whites. The callibration software changes colors and luminosity at a fast pace, I would say each color / luminosity stays on screen a little less than one second.

It is not necessary to add that this is at it must be!

[Manolo Laguillo]

mmh, no feedback means I explained myself bad. Let's show some of the pictures of the screen I am mentioning.

Look on the bottom, the horizontal strip is the proof that each screen had a different luminosity.

Each screen appears very briefly, and the M8's reaction, changing the exposure time, is therefore instantaneous, in any case quicker than the one a human being is capable of.

The black shape hanging from above is the Munki device, the photometer. It looks soft because it was unfocused. The lens was the 28/2.8 Elmarit ASPH.