Jan 21, 2009: Digital Weird

[Knight f3]

The cellar had already documented this phenomenon. As I recall, a guy had modified a flatbed scanner to work as a digital camera and he would get similar weirdness in his photos of moving objects.
Although for a flatbed scanner, slowly moving would be enough to cause crazy images.

Still looks cool though.

[Gravdigr]

Cool how the camera even manufactured the parts of the prop that wouldn't be visible, at all. You know, covered by the nose cone. Yeah, that's cool, a camera that automatically photoshops your pics for ya. Awesome.

[Sundae]

Originally Posted by Gravdigr

Cool how the camera even manufactured the parts of the prop that wouldn't be visible, at all. You know, covered by the nose cone. Yeah, that's cool, a camera that automatically photoshops your pics for ya. Awesome.

Ooh, ooh! I want one of those, do you know where they sell them?

[Razzmatazz13]

Originally Posted by Sundae Girl

Ooh, ooh! I want one of those, do you know where they sell them?

Actually...the last time I was camera shopping, they had cameras that claim to fix blotches on your face automatically (after auto finding your face in the frame of course) and other such craziness.

This one makes you skinnier:
http://www.reginalewis.com/2007/09/1...ounds-thinner/

[barefoot serpent]

another example

[Wombat]

Originally Posted by Gravdigr

Cool how the camera even manufactured the parts of the prop that wouldn't be visible, at all. You know, covered by the nose cone. Yeah, that's cool, a camera that automatically photoshops your pics for ya. Awesome.

Nose cones don't cover the propeller blades. The blades come out the side of the nose cone. Which makes the photo plausibly real, not photoshopped.

Here are some pics of stationary propellers so you can see how the blades come out the side of the nose cone:

[Gravdigr]

Originally Posted by Wombat

Nose cones don't cover the propeller blades. The blades come out the side of the nose cone. Which makes the photo plausibly real, not photoshopped.

Here are some pics of stationary propellers so you can see how the blades come out the side of the nose cone:

So it (the camera)manufactured parts of the prop that don't even exist?

[Wombat]

Originally Posted by Gravdigr

So it (the camera)manufactured parts of the prop that don't even exist?

I can't see any parts of the prop that don't exist, so I'm not sure what you are referring to. To me, every part of the picture looks consistent with a focal-plane shutter exposure of a moving object. Yes it is weird, but I think it's genuine

[xoxoxoBruce]

But how do you get a continuous blade, with two red tips, and no red nose cone in the middle?

[Wombat]

Originally Posted by xoxoxoBruce

But how do you get a continuous blade, with two red tips, and no red nose cone in the middle?

Good question, lets see if we can work it out.

Looking at the pitch of the blades at the top-center of the picture (where there is least distortion), I think the propeller must be spinning clockwise as we look at it. That way the blades are pushing air towards the back of the plane.

If the shutter is a vertical slit that moves from right to left as we look at the picture, I think that explains the effect we see....

In the top-center of the picture, the blades and shutter pass in opposite directions when both are close to vertical, so we see straightish blades.

On the right of the picture, the tip of the blade passes the shutter first, then as the blade swings down through horizontal the shutter has moved slightly further left so we see the middle of the blade slightly further left than we saw the tip, and finally as the blade approaches the bottom of its swing the fast-moving blade tip overtakes the slower-moving shutter, and so we see the tip again slightly further to the left. The result: it looks like a double-tipped blade floating unattached in the air

I'll let you figure out what's happening on the left of the picture yourself

[Gravdigr]

Originally Posted by Wombat

I can't see any parts of the prop that don't exist, so I'm not sure what you are referring to. To me, every part of the picture looks consistent with a focal-plane shutter exposure of a moving object. Yes it is weird, but I think it's genuine

I was talking more or less about the part of the prop that bolts to the hub. Where do the hub flanges disappear to, and where does the section of prop that magically appears to connect two seperate sections of prop where there should be hub flanges (for lack of the correct term) appear from?

And, to clarify, I'm not saying the pix are actually photoshopped. (I just thought the bs flag was cool) Just perpetuating the oft repeated cellar mantra. I've seen these type pix before, I just can't wrap my fragile little mind around the idea.

[Anon. Y. Mouse]

I believe you're seeing the reflection of the blades on the nose.

[glatt]

Originally Posted by Knight f3

a guy had modified a flatbed scanner to work as a digital camera and he would get similar weirdness in his photos of moving objects.

That would be Matthias Wandel. He amazes me with the stuff he invents.