When using a camera and and not being stable in respect to the target, picture smear occurs. Pluto is 2370 km wide and flyby occurred at speeds ~14 km/s and from distance of ~10,000 km.
To put in perspective, let's scale that down to Earth terms: 14 km/s ~= 50,000 km/h => 60 km/h is a scale of ~840. Scaling everything down linearly:
- Speed: 14 km/s => 60 km/h
- Pluto size: 2370 km => 2.8 km
- Distance: 10,000 km => 12 km
I could not find the zoom factor applied, but given that some images are zoomed to ~240 km, I would assume it is at least 10x.
So New Horizon's Pluto flyby is like going 60 km/h in a car and taking a picture of something of the size of ~2.8 km from the distance of ~12 km with a 10x zoom.
How is it that the pictures are so clear without any visible smear? Looks to me I have some concepts, data or calcs wrong - some clarification would be great.