Re^2: [OT] Mathematical photographers that program (Perl)? (Updated.)

FWIW, the image looks CG to me.

Even with all the nicks and scratches?

My thoughts are that they've probably been shot-peened or sand tumbled.

I've added an image I've just taken myself to the root node.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority". The enemy of (IT) success is complexity.

In the absence of evidence, opinion is indistinguishable from prejudice.

Comment on Re^2: [OT] Mathematical photographers that program (Perl)? (Updated.)

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Re^3: [OT] Mathematical photographers that program (Perl)? (Updated.) by Your Mother (Archbishop) on Mar 25, 2017 at 17:34 UTC
Yes; I agree about the tumbling but artificial flaws are a good trick to fool on expectations. It’s the quality of the light on the metal that looks off to me. I’m not at all sure, though. It might be just a filter/tart-up edit on it. We’re only another few years away from never being able to know again if still images, and then video and audio, are authentic. o_O	[reply]
Re^3: [OT] Mathematical photographers that program (Perl)? (Updated.) by Anonymous Monk on Mar 25, 2017 at 17:01 UTC
There's a point midway along the bolt where the threads look deepest and straightest. However, that's not "the central axis of the lens," it's the point where the axis of the bolt is perpendicular to a line drawn to the focal point of the lens. Try this: take a picture of two similar bolts, but put a few sheets of paper under the corner of one, so it leans toward (or away from) the camera a bit. You'll see that the "deepest and straightest" point is displaced upward (or downward).	[reply]
Re^4: [OT] Mathematical photographers that program (Perl)? (Updated.) by BrowserUk (Patriarch) on Mar 25, 2017 at 18:19 UTC
There's a point midway along the bolt where the threads look deepest and straightest. Yes. That really stands out with the short focal length lens of a phone camera doesn't it. It's not so obvious with the professional shots.	[reply]