Total Light Equivalence and Moores Law

Started Jun 7, 2012 | Discussions thread
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coroander
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Total Light Equivalence and Moores Law
Jun 7, 2012

In the mythical world of Total Light Equivalency, the following is true:
FF, ISO 800, 1/125 f/8 50mm == m43 ISO 200, 1/125 f/4 25mm

However, the Total Light Equivalence Brigade ignores Moores Law while repeating their total light equivalence dogma.

Moores law applies very well to sensors, such that in 18 months the efficiency of a sensor is roughly equal the efficiency of a sensor 1/2 its area today.

We can see examples of this in real life. The D800 comes along 18 months after the D7000, essentially taking the D7000 design from APS-C to FF size (and doubling the area). Camera phone sensors are vastly ahead of the D800 in efficiency.

The problem for the Total Light Equivalency brigade is that their "theory" only works if Moores law doesn't apply. That is, TLE is only applicable if all sensors are equally efficient at the same time. But that doesn't happen.

When you combine TLE with Moore's law this is what you can say:
FF, ISO 800, 1/125 f/8 TODAY == m43 ISO 200 1/125 f/4 3 YEARS AGO

And that's not really very interesting now is it?

Nikon D7000 Nikon D800
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