John, question about some images in the Digital Zoom Tutorial compared to images found in the PTZ Guide (Both excellent references, by the way) In the first you make a strong case for the irrelevancy of higher than single digit zoom factors. As an extreme example you show this highly pixelated crop and zoom (12X) of a 29MP image:
Then in the PTZ guide, while making a similar if less vitriolic point, you max out the digital zoom here to 12X on a 2.1MP camera:
To my eye, the first one is far more pixelated and has been zoomed far beyond the point of being helpful. The second picture on the other hand, while no Van Gogh, is just reaching the point of not being helpful, IMHO.
Yet, the first is from a 29M image and the second from a 2.1M image, one with less than 1/10 the pixels... How can it be?
Note: The quality difference seems so large that I assume I am misunderstanding something from the videos, or my math is wrong. That's ok by me. Also, I apologize if my cropping and sizing for the post has altered the perception of the images, I don't think it has; but use them only as a reference back to the actual videos to be safe.
I do, of course, have a theory that might explain it partially but first I want to make sure that I have the comparison framed correctly. Thanks!