View single post by Eric
 Posted: Fri Jul 5th, 2019 06:38
Eric



Joined: Thu Apr 19th, 2012
Location: United Kingdom
Posts: 4428
Status: 
Offline
Here's a slight departure...

I've been playing with the wife's Panasonic FZ2000. Actually trying to familiarise myself with it,  such that when she says 'it's not working properly' in the middle of nowhere, I have a fighting chance of sorting it out. 

Specifically I have been looking at video settings and came across 2 effects that I don't understand. So you video experts please explain ....

When I set her camera to still photography the zoom range in the viewfinder is 24-480. 
If I switch to 4K video the zoom range changes to 37-740.  It visibly zooms in the viewfinder. I don't understand why it's doing that? I thought 4K had more pixels? Surely zooming in changes that?

I then wondered how it was achieving that zoom. Was it optical or digital? As we know digital zooms are always inferior to optical zooms. How could a superior format use inferior zooming?

But here's the thing... when I take a frame grab from a 4K video, the image quality is just as good as a standard still shot. 

So the 4K zoom effect has given her 50% more reach without quality loss.  

I should add that this camera can actually take 4K still photographs without the need for frame grabbing a video when we would expect to have motion blur issues in some frames. But I thought I would try the worst case scenario and just grab a frame.  And it was fine.

Don't understando.O



____________________
Eric