Canon’s attitude: what do you think?

Started May 15, 2001 | Discussions thread
euthon New Member • Posts: 21
Re: Canon’s attitude: what do you think?

OK, i just run a quick and dirty test and here are the results:

Equipment:

  • Flash: Spectrum 370T Auto flash in manual mode, bounced off the ceilling to prevent gross overexposure, plugged into the hot shoe.

  • Camera: Canon Powershot G1, updated firmware, zoom set at its longest, 1/125 shutter speed, manual focus, on a tripod, ISO 50, RAW mode.

  • Target: 8x10" gray card, about 4 feet from the camera.

I shot the card at f/2.8, 4.0, 5.6, 8.0 and exported images into Photoshop. Below are averaged RGB values for each shot:

f/2.8 -- R: 199, G: 190, B: 172
f/4.0 -- R: 125, G: 117, B: 103
f/5.6 -- R: 111, G: 106, B: 92
f/8.0 -- R: 23, G: 22, B: 20

White balance was set to "flash".

I repeated the test several times and the results were pretty consistent.

I can definitely see the problem you describe around f/4 - f/5.6, but it's not nearly as bad as in your case.

euthon

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