This camera is small so that it can be used in extreme situations without being cumbersome
Is this camera slightly small?
UPDATE ON FEB. 9, 2013BATTERY LIFE:  The battery of the Hero2 does last 2x longer than the battery life of the Hero3.  I confirmed this as I did some videoing during the blizzard.  I bought the Wasabi battery pack with charger and their 1200mAh batteries do out last the stock batteries of 1050mAh.  But it won't  add significant life and you cannot swap the battery out with the GoPro Battery BacPac.  So I recommend buying more batteries and having at least 1 battery BacPac.END OF UPDATEThis is a review of the GoPro Hero3 Black Edition.  I am not going to explain what 1080i/30fps mean or any other specifics.  You should already know that since you are looking at this camera.  This is not the forum for technical explanations of what 4.7 Cin means for example.With that said, when I received the Hero3 the first thing I did was fully charge it.  I then went to preform a firmware update.  This was not needed as my camera came up-to-date.  I am running Windows 7.  I have shot pictures and video with it and it lives up to its expectation.Battery Life:  The battery life is short.  More so with the wifi on and/or LCD attached.  (I also bought the battery bacpac and the LCD Touch Screen).  I believe the problem of battery life to be the battery itself.  I own a Hero2 also.  The Hero2 uses an 1100mAh.  The Hero3 uses a 1050mAh.  It doesn't seem like much but I think the -50mAh is what hurts the Hero3.  I also ordered extra batteries from Wasabi.  I believe that these batteries will help this issue as they are 1200mAh.  These have not arrived.  When they do I will post some test results.  I plan on testing all the batteries alone and in conjunction with the battery bacpac.Freezing up:  I have had both my Hero2 (with the new update) and Hero3 freeze on me.  This only happened 1x each and it was when I was trying to rush through the menus. Since then, I have not had any freezing up issues.The screen:  I see people complaining about the little black and grey screen.  It's fine.  You are not buying this camera for fancy screen.  If you want a fancy screen; buy something different or get the touch screen.  The touch screen does improve moving through the menus immensely.  This camera is small so that it can be used in extreme situations without being cumbersome. It's smaller size and weight reductions is incredible.  I hardly notice it when using the head strap.Why I gave this a 4 star rating .... The camera functions as it was promised.  I am a little disappointed that they went to a lesser battery.  Meaning from a 1100mAh to a 1050mAh.  I am also upset with the fact that for all products I have to print out the manuals.  when spending $400 ... I expect the manuals.  Lastly, no covers.  If you want covers for the camera itself and the housing, you have to purchase them separately.  with those few list inconveniences; it was enough for me to take away 1 star.Few last words: DO NOT BY THIS CAMERA FROM GOPRO ... Their customer service SUCKS!!!  Good luck getting anything from them aside of long waits on the phone.  I purchased mine thought Amazon.I hope this helped. 