You don't need to skimp with a cheap action cam — DJI's discounted Action 4 is better quality — and much better value at its lowest-ever price

You don't need to skimp with a cheap action cam — DJI's discounted Action 4 is better quality — and much better value at its lowest-ever price

The Amazon Prime Day deals are well and truly up and running — and if you're looking for an action camera, I've found a genuinely fantastic deal.Cheap action cameras are all over the market these days, and having used and reviewed a few of them, I'm somewhat wary — the image quality just tends to be so poor that they aren't even worth their two-digit price. When it comes to cameras, you're almost always better off going for an older model from a…