I have a question about battery grip, why does one choose to use them?
To my understanding the battery grip allows the user to use 4 AA batteries aswell as the original inside the battery grip.
A battery grip costs between $150-$300
Original Canon battery range from $40-$100
So people pay more money in order to be able to use AA batteries that last not even half the time of an original Canon battery. My battery can take around 1500-2000 images before going below 15% capacity, i bought an extra one, this means i can take roughly 4000 pictures with both my batteries for an extra cost of $45.
So a valid argument can't really be the AA batteries, if the battery grip could take two Canon originals inside, then it would be a great argument.
The other option people buy a batterygrip is for stability/heavier camera. But arent tripods/monopods used for this?
And then there is the third options.. the one that some will never admit, that using a battery grip makes the photographer look more "professional".
So, to sum it up.. why?
I have original grips on both my 5DII & 7D.
1) Holds two batteries so you haven't got to carry a second or bother with swapping.
2) Allows you to shoot portrait with controls in correct place
3) Balances out heavy lenses
4) Protects the bottom of the camera when you rest it on the floor
5) Double up the important controls - for anyone who's had them fail in the field
6) Makes your camera look bigger than 'Uncle Bob's, when your getting paid to be there 
Hope this helps.


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