Just because this is the camera I use!!!!
$496 on Amazon.
The camera is SD card based, takes video or photos and has a mic input. It comes with software (HDWriter) to download from the SD card or from camera via USB. Internal mic has "zoom" facility to focus the sound.
My mic is a YOGA EM-268 Electret condenser mic (it needs a battery) with a long lead. (OK for interviews)
The mic sound levels are looked after in the camera but can also be preset by the user.
I use my own homemade "deadcat" for windy conditions.