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12/11/2008 06:27:12 PM · #26 |
Originally posted by kirbic:
Originally posted by GeneralE:
You can stack the star trails, so that you have a noise-reduced image of six-minute star trails, but not combine them together to create a new, sixty-minute trail image -- that would be changing the composition, moving elements around to create multiple iterations, etc. -- specifically forbidden by this rule.
RegiStax |
I'll respond to this here because I think that it contains potentially misleading information.
1.) Whether a one-hour star trail shot is made as one exposure or many is irrelevant, as the captured scene will be the same.
2.) One of the express purposes of allowing multiple exposures was for noise reduction, and this is exactly why one would break up a star trail shot, *not* to "move objects."
3.)There is absolutely no way that one can "combine several six-minute trails" as you'd have to "de-rotate" the foreground in each shot, or let it be blurred, which is just the opposite instance of letting the stars "trail," and so would under this interpretation not be legal. |
Does this apply to anything that moves or just stars? Would it also be illegal to stack several exposures of a scene that contained moving water (i.e. waterfalls, rain, tide, etc.)
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12/11/2008 06:44:39 PM · #27 |
I thought one of the master free study entries got DQ for this exact reason.
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12/11/2008 07:31:36 PM · #28 |
| As I said in another thread, I would just close this can of worms once and for all - no multiple exposures in advanced ruleset, period. We would still be able to do HDR from a single RAW file. No stacked star treks, but I can live with that. But do make expert challenges one some regular basis where digital artists can have their creative outlet. |
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12/11/2008 07:35:44 PM · #29 |
Originally posted by LevT:
As I said in another thread, I would just close this can of worms once and for all - no multiple exposures in advanced ruleset, period. We would still be able to do HDR from a single RAW file. No stacked star treks, but I can live with that. But do make expert challenges one some regular basis where digital artists can have their creative outlet. |
Good point, well made, nuff said, end of, so lets go bicker about 'art' in images :) |
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12/11/2008 07:37:38 PM · #30 |
Originally posted by Ecce Signum:
lets go bicker about 'art' in images :) |
Handy link. Bicker away. |
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12/11/2008 07:43:53 PM · #31 |
Originally posted by scalvert:
Originally posted by Ecce Signum:
lets go bicker about 'art' in images :) |
Handy link. Bicker away. |
Excellent Shannon, I was sure the link was taking me to the Glass/Feast thread, nice one ;) |
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12/11/2008 10:30:58 PM · #32 |
Originally posted by LevT:
As I said in another thread, I would just close this can of worms once and for all - no multiple exposures in advanced ruleset, period. We would still be able to do HDR from a single RAW file. No stacked star treks, but I can live with that. But do make expert challenges one some regular basis where digital artists can have their creative outlet. |
Digital art as defined in the old expert challenges is a different animal than using HDR to overcome a camera's limitations. HDR from a single RAW isn't true HDR. |
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12/12/2008 01:07:37 AM · #33 |
Originally posted by Ken:
Originally posted by LevT:
As I said in another thread, I would just close this can of worms once and for all - no multiple exposures in advanced ruleset, period. We would still be able to do HDR from a single RAW file. No stacked star treks, but I can live with that. But do make expert challenges one some regular basis where digital artists can have their creative outlet. |
Digital art as defined in the old expert challenges is a different animal than using HDR to overcome a camera's limitations. HDR from a single RAW isn't true HDR. |
Ken, I know that HDR is not digital art. and I understand that HDR from different exposures is a more powerful tool than HDR from a single RAW file. But I think this limitation is a small price to pay for the unambiguity of a single-exposure rule. 12-14 bit RAW files still give you a pretty good dynamic range for making HDR.
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12/12/2008 09:55:00 AM · #34 |
Originally posted by LevT:
Originally posted by Ken:
Originally posted by LevT:
As I said in another thread, I would just close this can of worms once and for all - no multiple exposures in advanced ruleset, period. We would still be able to do HDR from a single RAW file. No stacked star treks, but I can live with that. But do make expert challenges one some regular basis where digital artists can have their creative outlet. |
Digital art as defined in the old expert challenges is a different animal than using HDR to overcome a camera's limitations. HDR from a single RAW isn't true HDR. |
Ken, I know that HDR is not digital art. and I understand that HDR from different exposures is a more powerful tool than HDR from a single RAW file. But I think this limitation is a small price to pay for the unambiguity of a single-exposure rule. 12-14 bit RAW files still give you a pretty good dynamic range for making HDR. |
I thought you didn't understand, sorry for assuming.
Besides the dynamic range, we'd also be losing focus stacking and noise reduction, and I'd rather keep those things than lose 'em. I believe DPC took a big step when it went forward with multiple exposures in advanced editing and losing that would be a step backwards, IMO.
I suggest a potential solution: implement a total time limit for all stacked/multiple exposures. Let's say we use a 10 minute limit, something that wouldn't create huge star trails. I expose at 1, 2, and 4 minutes and combine them for a total of 7 minutes and minimal star trails, and all is good. But if I wanted to use those 10 six minute exposure to create long star trails it would subject to DQ. Thoughts anyone?
I also think that a special rule should be added for the current Stars challenge to avoid potential DQs:
"Combining images to create a star trail is allowed for this challenge" or
"Combining images to create a star trail is not allowed for this challenge"
I appreciate the SC calling for input on the star trail issue, but the timing here sure stinks and this should be clarified for the current challenge and ultimately in the rules.
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