Don't buy in to the megapixel hype. It means nothing.
Only time megapixel matters, if you are going to print an eight feet picture. You can have an 8, 18 or 41 megapixel camera but as long as it takes jpeg pictures and has no raw picture capability it can not compete with a DSLR.
Boring but great video. Explains megapixels. Nikon D800 is a 4 3000 camera by the way.
Don't buy in to the megapixel hype. It means nothing.
Only time megapixel matters, if you are going to print an eight feet picture. You can have an 8, 18 or 41 megapixel camera but as long as it takes jpeg pictures and has no raw picture capability it can not compete with a DSLR.
Beast nailed it. An 8 MP camera is more than adequate for making decent prints. The 5D Mark 3 which is the top of the line prosumer Canon camera has about 22M pixels. That is more than enough for making even large prints like 24x36. The Nikon D800 has the highest MP of all DSLR full field format cameras today at 36MP. This is overkill for 99.9999% of all standard uses. Only place where such high resolution may be useful is if you are a professional and are interested in making billboard size prints, say several feet by several feet.
That being said, very high MP would be useful if you were cropping images a lot, like people who shoot birds tend to do. That way, even if you crop your photo by a huge amount, you still have enough pixels left to get a decent image of your bird. This is why birders tend to prefer crop cameras in the first place because it gives you that 1.5X or 1.6X crop factor.
So, if you are picking a DSLR camera today, most important factors to consider are sensor quality and focusing ability. Sensor quality means noise performance - the ability to shoot at very high ISO and not get too much grain, like the Canon 6D, and dynamic range - the ability to reproduce both deep shadows without noise and bright highlights without blowing them out. Focusing ability is being able to focus in low light and having lots of cross-type sensors scattered across the field of view to enable accurate focusing of even moving objects.
Bottom line is that with a cell phone or any P&S camera, you are trading off image quality for convenience, the ability to stick it in your pocket and go anywhere. That has immense value. The DSLR is always going to take better shots because with that format, the manufacturer can make better sensors and lenses.
What I am most interested in following is the mirrorless cameras. I think that within 5 years, we are going to see mirrorless cameras that are full field and can take shots as good as current DSLRs while being much lighter, having electronic viewfinders that show real time historgrams, etc. That is something that I would sell off my DSLR for, when the time comes.
To me most important part of dslr is ability to play with the depth of field. Did you see that video? Phone takes great clear pictures but looks like it was set at f \ 11 or something. Everything was clearly in focus, which is something I don't always need to have.
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