Sat Dec 14, 2013 3:10 pm
Some day you all will switch from thinking in film terms and start thinking in digital terms. There is no crop factor. There's only Field of View and Resolution. Nothing else matters at all.
The image plane of any lens is exactly the same phisical size regardless of what sensor you put into it. If you sample a smaller portion of that image plane and have the same resolution as a larger sensor, then obviously any movement would be more easily seen because you have a higher resolution of a smaller area of the image plane. In other words, if you have a HD "full frame" sensor, your pixels might be 15um (I don't know for sure, but you can look it up). The smaller sensor, using the same HD resolution, would have much smaller pixels- say 7um. So any movement of the picture in the larger, less resolved sensor (full frame) might be contained inside that one pixel (not bloodly likely, but you get the picture).
Hope that helps. You all need to stop thinking in terms of frame size compared to some standard, or zoom, or magnification, or whatever. Digital photography is concerned with FOV and resolution- that's it. The other stuff is for the dinosaurs.
David Dearing
DJI Mavic Pro
BMPCC w/12-35mm Lumix HD