Unfortunately, it seems to be all too frequent (and not just in space images). The CTers don't understand image compression, image artefacts (either in general or JPEG in particular), or any sort of photogrammetry. The most notorious example of this was the late
Jack White, who:
- Couldn't tell which way the LM was facing in photographs
- When testifying to the Warren Commision (JFK assassination) the following exchange occurred:
and more.
Further, there are a couple of later parts of his testimony that show up why White made so many false assumptions as regards shadow, parallax and perspective effects the Apollo photographic record, and why HB's continue to call that record into question.
Edited for clarity
GOLDSMITH. Mr. White, you have made reference to several points in these photographs that suggest that the body of Oswald is not consistent in the various photographs in light of the head size; is that correct?
WHITE. Yes.
GOLDSMITH. To what extent, if any, did you compute photogrammetrically the effect of an object's tilt on its apparent length in the photograph?
WHITE. As I said, I am not a scientist. I don't indulge in that sort of thing.
GOLDSMITH. Mr. White, I just have one question.
WHITE. All right.
GOLDSMITH. When you did this study, did you compute photogrammetrically the effect of tilt on the way that the length of an object appears in a photograph?
WHITE. I conducted a study by photographing a yardstick from three different (angles)
Therein lies one of his (and other CTers/HB's) biggest mistakes; the failure to understand the fact that a photograph is a two-dimensional representation of a three dimensional reality, and the failure to realise the implications of this fact.
This is a simplified explanation of how this works
http://mcadams.posc.mu.edu/photog.htm
Here is a photo of an ordinary car park.
You know that the white lines are all the same length and are parallel to each other, but that is not how it appears in the photo. This is due to perspective, and without any information about the camera and lens, or its distance and elevation from any given point in the scene, you cannot determine how long the lines are, or whether or not they are
actually parallel
This aspect of 3D to 2D representation will be familiar to most sports fans.
Grass advertising signage in stadiums is deliberately distorted remove the perspective. The actual logo (left) is painted on the grass in a distorted fashion as viewed from directly overhead (centre) so that from the point of view of the main stadium TV camera (right) it appears in the same proportions as the actual logo.
This graphically illustrates how easily the eye and brain are fooled with regard to perspective. You cannot analyse a photograph by simply laying a ruler on it and taking measurements, as Jack White did so often.
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