Help with open challenge rules - DPChallenge Forums

Canon EF 24-105mm f/4.0L IS

04/05/2005 12:48:16 PM · #1

Hi guys,

I got a pic for accidental letters, but I donÂ´t know If can use the option in photoshop called "Invert" or something like that. I use PS in spanish and I donÂ´t know the exact translation to English. The key control to this option is Ctrl+I. Is that allowed?

Thanks.

gaurawa

Canon EOS-5D Mark II

04/05/2005 02:00:24 PM · #2

I don't think inversion is allowed in basic editing. Its allowed in advanced editing though.

Canon EF 24-105mm f/4.0L IS

04/05/2005 02:05:10 PM · #3

Yes, you can use the invert function in Photoshop for basic editing, as long as it is applied to the entire image.
BTW, for those interested, precisely the same efect can be achieved using curves, but dragging the lower left point to top left, and the upper right point to lower right.

scalvert

Canon EOS-5D Mark III

04/05/2005 02:09:42 PM · #4

While it is legal, if your image LOOKS inverted, the voters will usually score it low.

longlivenyhc

Sigma 105mm f/2.8 EX DG Macro for Canon

04/05/2005 02:11:18 PM · #5

Originally posted by scalvert:

While it is legal, if your image LOOKS inverted, the voters will usually score it low.

thats pretty much 115% correct

Olympus 40-150mm f/2.8 PRO M.Zuiko

04/05/2005 04:18:37 PM · #6

Originally posted by kirbic:

Thanks for the answer... IÂ´m gonna use it!

Brad

Olympus OM-D E-M1

04/05/2005 04:21:19 PM · #7

Originally posted by longlivenyhc:

Originally posted by scalvert:
While it is legal, if your image LOOKS inverted, the voters will usually score it low.

thats pretty much 115% correct

Case in point:

Voters comments said it all.

Tamron SP AF 28-75mm f/2.8 XR Di for Canon

04/06/2005 11:34:51 AM · #8

IÂ´ve received a DQ recommendation. At least, I know an inverted pic itÂ´s legal. How many time do I have to send the proof? IÂ´m now out the country and IÂ´ll arrive home tomorrow at night.

Canon EOS-20D

04/06/2005 11:59:30 AM · #9

48 hours - I'll make a note on yours that you're out of the country.

Canon EF 24-105mm f/4.0L IS

04/06/2005 12:07:05 PM · #10

Originally posted by mk:

48 hours - I'll make a note on yours that you're out of the country.

Thanks.

Art Roflmao

Canon EOS-6D Mark II

04/06/2005 02:19:38 PM · #11

Originally posted by BradP:

Originally posted by longlivenyhc:

Originally posted by scalvert:
While it is legal, if your image LOOKS inverted, the voters will usually score it low.

thats pretty much 115% correct

Case in point:

Voters comments said it all.

Hmmm - the great majority of comments are positive. Not sure how this is a case in point...

rsaulyte

Canon EOS-350D Rebel XT

Canon EF-S 18-55mm f/3.5-5.6

04/24/2005 09:17:55 AM · #12

What about High Pass filter in open challenge? is it allowed?

Canon EF-S 18-55mm f/3.5-5.6

04/24/2005 09:28:40 AM · #13

Originally posted by rsaulyte:

What about High Pass filter in open challenge? is it allowed?

High pass woud not be allowed if it is used as an effects filter. If it is legitimately used to "preserve integrity" of the image, it is allowable, however. From the basic rules:

Any filter or stand-alone utility designed and used to preserve the integrity of the image and/or reduce the effects of noise, scratches, etc, are permitted.

It's not clear to me that a high-pass filter would normally be used to preserve integrity of the image, though.

rsaulyte

Canon EOS-350D Rebel XT

04/24/2005 09:53:52 AM · #14

Well, I want to use this High Pass in the process of sharpening.. And I'm not really sure if it's an effect filter, or what.

Canon EF-S 18-55mm f/3.5-5.6

04/24/2005 10:01:46 AM · #15

Originally posted by rsaulyte:

Well, I want to use this High Pass in the process of sharpening.. And I'm not really sure if it's an effect filter, or what.

If used only to sharpen, then yes, you are "preserving integrity," so the filter is OK for that use.

rsaulyte

Canon EOS-350D Rebel XT

04/24/2005 10:06:13 AM · #16

ok, thanks :)

Tycho

Nikon D70

Nikon AF-S DX Zoom-Nikkor 18-70mm f/3.5-4.5G IF-ED

04/24/2005 11:08:17 AM · #17

Originally posted by kirbic:

Originally posted by rsaulyte:
Well, I want to use this High Pass in the process of sharpening.. And I'm not really sure if it's an effect filter, or what.

If used only to sharpen, then yes, you are "preserving integrity," so the filter is OK for that use.

I don't think this is true. To sharpen the image with high-pass -as far as I know- one has to apply the high-pass filter on a different layer and then change the mode of that layer to Overlay, Soft Light or Vivid Light and adjust its opacity. Therefore, it can't be legal under basic editing rules.

Prof_Fate

04/24/2005 11:21:09 AM · #18

Originally posted by kirbic:

Does this mean this is legal in Basic? I have avoided this method of sharpening as I figured it to be illegal based on the rules.

So does this mean that "preserving integrity" is the 'hidden' key to DQ rulings? As long as we can convice the SC that we have "preserved the integrity" of an entry we'll be OK?