Proof of Photomanipulation

Mobertermy said:
Okay...I haven't seen anything in any other photos that demonstrates this bizarre funhouse effect that seems to move the location of things and turn 90 degree angle into 10 degree angles and 37 degree angles into 90 degree angles.
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Any picture taken with a telephoto lens. The difference here is you are looking at lost of them from different angles, and it's confusing you.
 
drewid said:
Maybe this will help, it really is very simple, but perhaps needs another way of looking at it.



I'm moving the camera and ONLY the camera. It's a longish lens, so the parallax effect is exaggerated, as in the photos.

Watch what happens to pole B.
It's just the camera moving, nothing else.
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bump for MT

Seriously watch it a number of times. try to get your head around it.
 
I Ratant said:
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Just when it's possible to feel the ignorance has hit rock bottom, the bottom moves down a mile or so.
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Removed breach of Rules 0, 10, and 12.
Replying to this modbox in thread will be off topic  Posted By: LashL
I'm just trying to make sense of the photos.
 
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sheeplesnshills said:
Its a public street AFAIK so you can take all the pictures you like. In fact the Airforce memorial is a few yards from there and would give an even better view.
Look at google earth lots of people have taken pictures from there
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No, not a 'public street' sheeplenshills. They have loosened up a little now due to the Pentagon Memorial, but back in 2007 I was detained for taking pictures on Columbia Pike just west of the AF Memorial. I was very much informed (while I sat in the back of a DPS car) that it was a federal reservation and no photography was allowed. Go figure.

You have to obtain a permit to take photos or video tape in the area of the Pentagon and Annex. Just ask the boys and girls at Loose Change and CIT, they had the same encounters back in 2006.
 
Mobertermy said:
So 200mm lens sums it up?
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No it's variable, that's what a zoom lens does, that's what makes it a zoom.
I believe his lens goes up to ~280mm as thats the longest he seems to use for these shots.
There's no real way of guessing the lower limit is, 28mm - 280mm are common figures though.
 
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drewid said:
No it's variable, that's what a zoom lens does, that's what makes it a zoom.
I believe his lens goes up to ~280mm as thats the longest he seems to use for these shots.
There's no real way of guessing the lower limit is, 28mm - 280mm are common figures though.
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And with a digital camera, the sensor size can alter the apparent length, relative to the usual 35 mm standard.
Common sensor sizes are 2/3rds of 35 mm film dimensions, so a 200 mm length on that sensor is equivalent to a 300 mm 35mm lens.
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In the image, a "55 mm lens" on the Pentax *ist digital camera is equivalent to a 78 mm lens on a 35 mm film camera.
It is important to note the differences, if any due to the image sensor's size.
Digital cameras with 35mm sized images are expensive!
 

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Mobertermy said:
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I'm just trying to make sense of the photos.
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Your ignorance of the subject has no lower limit, as you show with every post.
 
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Telephoto "compression"
Two photos taken within 4 seconds last year.
Both with a 50 to 200 mm zoom lens on a Pentax *iST digital camera.
The full frame 50 mm photo is shown, then cropped to the same size as the full frame zoomed (115 mm) photo using the width of the thunderhead to scale the wider angle image to the size it has in the zoomed image.
There is no difference in the perspective--relative positions-- of anything in either photo.
 

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So, all you did was start a thread about photo manipulation when it is clear you are clueless on the subject? Cool.
 
I just noticed that the Ingersoll photos on the pentacon site are the originals, with EXIF data. The camera was a Nikon D1x (with APS-C frame size), and the lens seems to be an 80-200mm zoom (equivalent to 120-300mm in a 35mm camera).

What I Ratant's photos show is that relative angular size is not affected by focal length, since light always travels in straight lines. "Depth compression" is really just a perception effect. If you are 50 feet away from a 6-foot-tall man and there is another 6-foot-tall man 100 feet away, the farther man will have an angular image size about half that of the closer man. That's true for the human eye and for a camera with any focal length lens. Our vision systems are pretty good at detecting that relative difference and judging that the second man is twice as far away as the first. What's changed by a wide-angle vs. "normal" vs. telephoto lens is how far away we would judge the camera to be from the first man. With a telephoto lens, we might judge that the camera was only 10 feet from the first man (which is the purpose of a telephoto), so it appears the the second man is only 20 feet away. With a wide-angle lens, we might judge that the camera was 100 feet away from the first man so the second man was 200 feet away. That's all that "depth compression" and "depth expansion" mean: perceptions of relative distances are altered by different focal lengths.
 
One of the best presentations of telephoto "compression" is the opening sequence in "Always", when the PBY scooping water from the lake approaches the fishermen in the boat.
Really well done. :)
 
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