|
Post by martin on Jun 7, 2005 2:09:02 GMT -4
From his post there... I wonder how many seconds will elapse before he is "BUNNED" over there too... I do not know if he is banned there, but his posts and all replies are removed, so he is erased from history. It is like in the days of Stalin Martin
|
|
|
Post by Data Cable on Jun 7, 2005 3:30:39 GMT -4
Oh darn, just when I was beginning to be learning to be speaking of the unknownese, and other craps like that. ;D ;D ;D
|
|
|
Post by pierre1985 on Jul 22, 2005 3:08:25 GMT -4
|
|
|
Post by PeterB on Jul 22, 2005 3:32:02 GMT -4
G'day Pierre, and welcome to Apollohoax. Yes, the first photo you linked is false - in a way. Mars indeed does not look exactly like that. But the curved horizon is an artifact of the camera lens. It's like fisheye lenses which have been around for years. See these pictures: www.pbase.com/cameras/sigma/8_4_ex_circular_fisheye
|
|
|
Post by pierre1985 on Jul 22, 2005 6:00:09 GMT -4
|
|
|
Post by twinstead on Jul 22, 2005 7:48:19 GMT -4
Huh? Did you even LOOK at those pictures on Earth from the fish-eye lens?
I suspect some ideological filters were applied on your part sir.
|
|
|
Post by skinbath on Jul 22, 2005 8:08:14 GMT -4
Good Day ! I`ve been reading this piece with interest and would like to add that surely the following logic applies. Firstly,what is the incentive for NASA to fake images of Mars?Be sensible here please. Secondly,- I`m here to learn as I am a layman in this and most related areas on these pages but the members of NASA are indeed ROCKET SCIENTISTS. Surely you do not imagine that people clever enough to "hide" away photographs/images/evidence of Ufo`s/Aliens/or any other assortment of related conspiracy theories etcetera,etcetera,etcetera (think Yul Brynner in the "King and I" here ),for 30/40 years from EVERYBODY are stupid and foolish enough to make such simple photographic errors that can be detected by professional analysts etc etc etc.Don`t forget that NASA knows that any images that are produced will be subject to in depth studies by conspiracy theorists,(why NASA should care I don`t know).None of this "faker" stuff has any logical basis to it and this leads right back to the logic of Apollo hoaxers.To just have a particularly rigid point of view benefits nobody and least of all those that hold it. I agree that there`s a point to discussing various points of view and theories but there has to be a rationality running in parallel to it. Thirdly,Do you imagine that amateur photographers would be the ones to "fake" said images/pics and photographs? No,of course not and so they would be "faked" by professionals and this I advocate would lead to the "fakes" being undetected. Phew !
|
|
|
Post by Joe Durnavich on Jul 22, 2005 9:49:41 GMT -4
Huh? Did you even LOOK at those pictures on Earth from the fish-eye lens?
The problem with that page is that you get different photos selected at random every time.
|
|
|
Post by twinstead on Jul 22, 2005 9:58:38 GMT -4
Huh? Did you even LOOK at those pictures on Earth from the fish-eye lens?The problem with that page is that you get different photos selected at random every time. Ah...I see now. The pictures I saw clearly were as curved as the mars pics, though. Edit for spelling
|
|
|
Post by Joe Durnavich on Jul 22, 2005 10:04:22 GMT -4
The amount of curvature you will see depends on how much the lens is tilted above or below the horizon. Photographers often aim straight at the horizon, so the horizon renders as a straight line. The Mars Rover navigation camera is aimed upwards a bit, so you see the horizon line as a "frown". If it was aimed downward a bit, you would see it as a "smile". (I hope I haven't reversed those. My morning coffee is still working its way into my system...)
|
|
|
Post by ktesibios on Jul 22, 2005 11:00:24 GMT -4
I can produce a similar effect with my eyeglasses. A horizontal line which passes through the center of the lens appears straight, but if I move my head so that I'm looking at the same line through the upper half of the lens it bends upwards in the center and vice versa if iI look at it through the lower half of the lens. The amount of curvature increases towards the edge of the lens.
I'm nearsighted, so my glasses have a negative focal length (my prescription is in the -7s). Whether the effect would be reversed for a positive lens, like a camera lens, and produce pincushion rather than barrel distortion I don't know.
|
|
|
Post by JayUtah on Jul 22, 2005 11:45:08 GMT -4
That type of distortion is a well-known feature of wide-angle lenses. There's a clip on my Tivo I need to capture. The lens used is not ostensibly a wide-angle lens, which is to say the distortion is not dramatically apparent. But as the cameraman tilts up the side of a building, you can see a nearby horizontal beam change from bowing in one direction to bowing in the opposite direction as it passes the optical axis.
|
|
|
Post by sts60 on Jul 22, 2005 12:22:25 GMT -4
All images of "Front Hazcam" are false. Thousands of images are false.Let me get this straight. Are you claiming all of these photos are faked because they show a curved horizon? Even though a curved horizon is an ordinary component of photographs taken with fisheye lenses? Are you claming that NASA is saying that's what the horizon would look like if you were standing on Mars looking out? Do you really think that NASA would release "thousands of images" which would instantly be discerned as fakes, without requiring any technical expertise? In the site www.pbase.com/cameras/sigma/8_4_ex_circular_fisheye no image shows horizon so curve.Right away, I saw this image which clearly shows the downward-curved horizon effect. Your link refutes your claim. All images are false and Americans never sent probes on MarsAre you yanking our chain? Come on. You're not serious, are you?
|
|
|
Post by pierre1985 on Jul 22, 2005 13:38:18 GMT -4
"Right away, I saw this image which clearly shows the downward-curved horizon effect. Your link refutes your claim".
You aren't an expert of wide angle lens photographs. Instead I am. You can get an horizon so curve if you take photographs from above. But Spirit can't do that and then horizon of thousands of images is false. Then all images are false and Americans never sent probes on Mars.
|
|
|
Post by twinstead on Jul 22, 2005 13:55:44 GMT -4
"Right away, I saw this image which clearly shows the downward-curved horizon effect. Your link refutes your claim". You aren't an expert of wide angle lens photographs. Instead I am. You can get an horizon so curve if you take photographs from above. But Spirit can't do that and then horizon of thousands of images is false. Then all images are false and Americans never sent probes on Mars. You keep on saying the same things over and over again as if the more you say it the more true it becomes, instead of answering questions. Classic. Answer the question:
|
|