Timeline for How to do HDR with long exposure photos?
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 14, 2013 at 9:32 | answer | added | user22694 | timeline score: 0 | |
| Feb 22, 2013 at 19:23 | history | tweeted | twitter.com/#!/StackPhotos/status/305035203531902976 | ||
| Feb 22, 2013 at 16:39 | answer | added | AJ Henderson♦ | timeline score: 0 | |
| Feb 22, 2013 at 14:04 | comment | added | Matt Grum | see also: photo.stackexchange.com/questions/683/… | |
| Feb 22, 2013 at 13:51 | comment | added | Matt Grum | "HDR" is possibly the most misused term in photography today, and might as well be read as "images with highly nonuniform tonemapping produced from one or more source images by a variety of means for the purpose of representing scenes with high dynamic range or applying special effects to otherwise boring images". | |
| Feb 22, 2013 at 12:34 | answer | added | Matt Grum | timeline score: 8 | |
| Feb 22, 2013 at 12:33 | comment | added | Michael Nielsen | His own formulation implies he considers "normal" HDR to be "lots of tone-mapped exposures", and from this we can infer that 2-3 is "lots", and also that he think they are tone-mapped before computing the merger, like they are in his example. But normally they are not. It is done directly on the bayer pattern before demosaicking in the good implementation, and after demosaicking in second rate versions, but while we are still in linear colour space. and THEN we tonemap, hopefully using a human perception calibrated sigmoid model (which is slower than normal toe/gamma-saturation mapping). | |
| Feb 22, 2013 at 12:24 | comment | added | Matt Grum | @MichaelNielsen I don't think anybody would seriously say 2 can be interpreted as "lots" so I think ElendilTheTall's point stands. | |
| Feb 22, 2013 at 7:53 | comment | added | Michael Nielsen | Well, I beg to differ. it is 2 tonemapped exposures - they are just manually weighted with a binary weight, vs computing the weights, making use of the noise suppressing features of the algorithm. Automated HDR is multiple non-mapped exposures, tonemapped once in post. Your link is exactly "lots of tonemapped exposures" in contrast, defining "lots" as 2. | |
| Feb 22, 2013 at 7:44 | answer | added | Michael Nielsen | timeline score: 2 | |
| Feb 22, 2013 at 6:30 | comment | added | ElendilTheTall | HDR doesn't always mean lots of tone mapped exposures. See this blog post photo.blogoverflow.com/2012/06/… | |
| Feb 22, 2013 at 6:29 | answer | added | Michael C | timeline score: 0 | |
| Feb 22, 2013 at 5:53 | comment | added | jrista | Can you link some examples? | |
| Feb 22, 2013 at 5:46 | history | asked | Jonathan Winters | CC BY-SA 3.0 |