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DPChallenge Forums >> Tips, Tricks, and Q&A >> Question on perspective adjustments...
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02/11/2003 12:02:50 PM · #1
While I'm sure this has been brought up before, I don't recall the verdict.

So where does perspective correction fall within the rules? It's not a filter, per se. But you are manipulating the image.
02/11/2003 12:05:18 PM · #2
Excellent question. I want to hear "not allowed" because I went through the ass ache of the century getting my perspective shot aligned LOL!!!!!!! I am sure for future reference I would like to see it is OK though...

Dave

Edit - spelling... LOL!!!

Message edited by author 2003-02-11 13:54:04.
02/11/2003 01:51:47 PM · #3
Just so you know, I'm NOT bringing this up to try and get someone DQ'd or anything... I didn't even enter the Perspective challenge. But I would like to know for the benefit of future reference, as I do plan on entering the Rhythm challenge.

Anybody?
02/11/2003 01:55:39 PM · #4
Michael, looks like just you and me. Since it is an overall move I guess it is legal. It isn't a spot move. I wish I had thought of this earlier... LOL... Dave
02/11/2003 02:00:22 PM · #5
I am not sure that it is.... let me get back to you.
02/11/2003 02:07:28 PM · #6
better be ;)
02/11/2003 02:12:46 PM · #7
Can someone explain what "perspective correction" is and how one goes about performing "perspective correction"?

Thanks!
Bill (wackybill)
02/11/2003 02:12:55 PM · #8
What are you guys talking about? I am lost.
02/11/2003 02:16:25 PM · #9
Pulling at parts of your image to undo perpspective and distortion problems.
Also used to make funny faces.
02/11/2003 02:18:41 PM · #10
In Photoshop you can put a marquee around the whole image (or part of it) and distort it to make things out of square due to perspective shifts, square again. It is a global edit (or spot depending on marquee size) and is real helpful when using really wide angle lenses.

I don't care either way to be honest with ya. I have learned to toil without it.

Message edited by author 2003-02-11 14:20:29.
02/11/2003 02:19:31 PM · #11
Sonifo,
Photoshop and I assume other image manipulation programs allows a photo to have its perspective warped. The effect commonly used is to take a "flat" photo and make it look like it shot with a fish-eye lens. With the abilty to manipulate perspective you can correct the lines of a building or straighten out perspective distortions of a shot. In theory, a fish-eye lens shot could be perpective manipulated to look like a flat image with the proper processing.

Message edited by author 2003-02-11 14:20:34.
02/11/2003 02:24:25 PM · #12
what about in camera perspective adjustment
02/11/2003 02:34:00 PM · #13
Anything done in the camera is okay.

For those who dont know what tool we are talking about:




We are discussing the legality of this tool, and as of yet have made no decision.
02/11/2003 02:39:06 PM · #14
*sigh*

Granted, it may not have been an issue back in the day, but I'll almost be irritated to see this one go through as a legal edit after all the flack I got about perspective issues in Sun, Moon, Star.

But, then, I'm a grumpy old man who has issues with desaturating all the yellows and blues to leave only reds in an image even if applied across the board, etc etc etc... because I see that as massive amounts of "spot editing" -- ie on a pixel to pixel basis....

*grin*
02/11/2003 03:03:10 PM · #15
I don't think we ever got an official comment from Drew or Langdon but my guess and hope is that it is illegal. this is because you are in effect selectively editing areas of pixels relative to the other pixels in the scene. It goes against the spirit that this sight is about. If any of the distortion tools were allowed it would allow all kinds of gross distorted effects and I would find that very discouraging at the least. Remember, if something can be misused it probably will be.

What do you think Drew and Langdon?

T

Message edited by author 2003-02-11 15:08:17.
02/11/2003 06:14:10 PM · #16
You should assume anything is illegal unless you find it explicitly allowed in the main Rules.
Remember that when you assume you make an Ass|U|Me...(they teach this in medical school...)
02/11/2003 11:40:06 PM · #17
Ahh, Patella. I remember Sun, Moon, Star. Beautiful photo... It was one of the first photos I ever voted on. And I do recall you catching a lot of flack about its "straightness."

Silly me. At this time I thought that folks were refering too whether or not the photo was "tilted" with the horizon line not being level. But now that you mention it, seems you were accused of perspective correction, which, if I recall correctly, you categorically denied.

And Tim, in way I want this to be denied too. It would make it A LOT easier for me to pull off the shot I want to do for rhythm, but you are correct in saying that it would go against the spirit of the site.
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