my idea of sub $300 technical improvements for any compact quadcopter used for aerial photography.
IF I was selling aerial photography compact quadcopters. by compact is to say it will fit in a backpack.
I would IMO add High Visibility colors to the quadcopter & a onboard piezo siren that can be activated by the pilot. to help find a lost quadcopter.
add an infrared LED collision avoidance system, simple idea is to add 8 to 16 infrared LED's and infrared sensors to the quadcopter.
to stop quadcopters from colliding with walls floors & ceilings indoors. but with the outdoors its from colliding with trees & buildings.
pulsed infrared sensors that detects objects that the quadcopter is about to collid with. and pulls an automatic split second turnaround.
by embedded software. job for programmers.
also add an anti-wind drift system by useing an optical mouse sensor on the bottom of the quadcopter looking down at the ground.
that will keep a quadcopter in a fixed hover. alternative to GPS without constant joystick input to hold a fixed position. even in a wind.
a optical mouse sensor detects if the ground is moving and embedded software removes the quadcopters tilting from the calculation
leaving pilot input and drift. so this is an autopilot that stops non piloted quadcopter drift.
also an integrated quadcopter video system, that gives Standard definition as FPV to the pilot, without a time lag.
but also gives video to an onboard High Definition Digital Video Recorder for aerial photography.
also the FPV video to the pilot . Heads Up Display needs to show countdown timer from a calculation of the battery voltage.
also 2.4Ghz up link signal strength. vr the down link. with a beep for low! must return to base.
also need a signal test preflight checklist for the video so you get a coordinated 5.8ghz channels frequency set
FPV Channel video TX frequencies used by the quadcopter. available frequencies for the down-link.
if you have two or more FPV quadcopters in the same RC radio zone.
end of rant