OK, so Duques has made an opening salvo with
Post subject: Re: Sharing your learning experiences
They don't actually.
Make a comparison between the 1DMK11 (10 MP) and the 7D (18MP). The MP count difference is almost a factor two, yet the photos from the 1D may actually be a tad better.
Then again, having more pixels gives you more pixels to throw away. So if, like 99% of the time, your lens is not long enough for the bird or whatever, you can crop away a lot.
before he goes on to justify his statement and provide a different perspective for why they may count.
For sake of comparability, I will stick with what many photographers on this site have, and that is a modern DSLR with a cropped sensor, but the discussion is similar when comparing full-frame cameras and point & shoot cameras just as well. Comparing DX to FX is something that can be tackled at a later stage if the issue is raised.
So what are the advantages and disadvantages of each side to the megapixel debate?
A few advantages of a high-megapixel over low-megapixel sensors include:
The ability to crop further
The capturing of additional, finer detail
The ability to print larger prints
Some disadvantages include:
often faster frame-rates
better low-light capabilities
While I have only listed three advantages and disadvantages for each (and there are many, many more for each side), any one of these may be a deal-breaker when considering your next camera. The issues that may affect your own style of photography will clearly influence your purchasing decision and each comes with its trade-offs.
So do you need a faster frame for action wildlife, or do you need the ability to crop further into the images owing to a problem with the "reach" your lenses? Do you need to print excessively large images, or do you need low-light ability? Clearly, many of what could be issues to you can be solved by throwing more money at the issue, upgrading your existing equipment, getting a second camera body, or possibly both.
So what are the deal-breakers for you that would sway you one way or the other when it comes to the megapixel debate? And which way would you jump if you had the opportunity (and why)?
I still believe that the ability and skill of individual behind the camera has the biggest influence in almost any given photographic situation and until my ability begins to be limited by my existing equipment, I will stick to the equipment that I have and keep trying to improve my artistic skills.