Originally posted by SParker48
Is it that Canon overexposes or Pentax underexposes?
If the Canon cost $100 more than the Pentax, is that because the Canon is expensive, or because the Pentax is cheap? If the Canon is 80g heavier, is that because the Canon is heavy, or the Pentax light? These questions are not answerable, because there is no objective standard for any of these things. Well, exposure yes, but *only* when shooting a flat surface like a gray card - and both cameras will nail that case every time. In real world situations, there are judgment calls, and different cameras make them differently. There is no right and wrong.
Quote: Do you know how much?
Depends entirely on the specific scene, the metering mode you are using. And I'm sure there would be some situations and modes where the Pentax would come out brighter - but on the whole, indeed, Canon does tend to expose a bit brighter. Instead of expecting a generic one-size-fits-all adjustment to make just to make some other camera's subjective opinion of how bright to make scene, better to learn the basic photographic principles at play here - exposure and metering - and how your camera behaves. Then you'll know for yourself when and how much adjustment to apply.