Originally Posted by
mechBgon
But does every digital camera use the same
sensor, and produce the same exact image at a given ISO, shutter speed and f-stop. That's the question
and from my experience, the answer is "definitely not."
Point in case: when I
reviewed my Seca 700 Ultra, I first tried using MTBR's camera settings. The resulting photos were much brighter than they appeared in real life, so I adjusted the settings to portray the light the way it looks in real life (to me, anyway). Granted, my eyes are over 40 years old and not necessarily representative of everyone's.
Different cameras use different sensors. Thing is - sensors in cameras have simply replaced the film that used to be in older style cameras and there were lots of different films produced by lots of different companies even then. They all used the same sensitivity references (ISO ratings) and the main differences were in color rendition, graininess, or B&W vs color. Some specilized films recorded only IR light or X-rays. Nothing much has changed. Now its just being done digitally.
According to the review you posted in 2008 (asuming its not a typo): [TABLE="width: 100%"]
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[TD="class: alt1, bgcolor: #F6F6F4"]"I tried the camera settings used in MTBR's light shootout (6-second exposure, ISO 100, aperture 4.0, daylight color balance) but they come out WAY brighter than what you'd see with your naked eyes, so I once again reduced the exposure time enough to be realistic."[/TD]
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Six seconds is a seriously loooooooong exposure! I'm not surprised it wasn't representative of what you were looking at. At 4 seconds I was getting overexposure to the point that large portions of the photo were completely whited out. But thats simply an exposure issue caused by too much light and is directly ISO related. Personally I think 1 second is a better choice and 1/2 second might be even better. But in light reviews - that would really show what a really poor light output most lights have.