Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
I hear you, Igor. Yes, indeed, since I got my *istD I shot no more than 10 films (in almost 3 years)... And indeed with digital some kind of HDR solution would be necessary. Well, I think I'd rather play with gray gradient filters 'cause I am very reluctant to do any serious post-processing. Your mileage probably *should* be different than mine. Boris Igor Roshchin wrote: Boris, Yes, that's indeed an option. Although, I should admit, I haven't used the film camera since I got DS. It would not be a convenient option to have two bodies during a vacation trip where we tried to fly without checking in any luggage (except for the return trip, where we had to check in one bag because we had wine, and liquids are forbidden in the carry-on when flying to the US). Coincidentally, during this trip to Argentina we discussed that it was nice not to worry about having the film for a hand check while going through airport security. I started playing with various layers today, as P.J.A. suggested. It's coming out rather funny. (well, I am making it that way.) If I have enough time and energy, I will finish it at some point. I might post it back here then. Igor -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
Boris, Yes, that's indeed an option. Although, I should admit, I haven't used the film camera since I got DS. It would not be a convenient option to have two bodies during a vacation trip where we tried to fly without checking in any luggage (except for the return trip, where we had to check in one bag because we had wine, and liquids are forbidden in the carry-on when flying to the US). Coincidentally, during this trip to Argentina we discussed that it was nice not to worry about having the film for a hand check while going through airport security. I started playing with various layers today, as P.J.A. suggested. It's coming out rather funny. (well, I am making it that way.) If I have enough time and energy, I will finish it at some point. I might post it back here then. Igor Fri Dec 7 14:46:45 EST 2007 Boris Liberman wrote: Igor, I sincerely think that taking a film camera with good negative film along might help. Another option of course is to use gray gradient filters in order to lower the d.r. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
My advise is to bracket exposure. I haven't as yet had much luck with HDR, so I just layer the bracketed shots and paint on masks for the bits I do, and don't, want. Cheers, Dave On Dec 10, 2007 5:14 PM, Igor Roshchin [EMAIL PROTECTED] wrote: Boris, Yes, that's indeed an option. Although, I should admit, I haven't used the film camera since I got DS. It would not be a convenient option to have two bodies during a vacation trip where we tried to fly without checking in any luggage (except for the return trip, where we had to check in one bag because we had wine, and liquids are forbidden in the carry-on when flying to the US). -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
David Savage wrote: My advise is to bracket exposure. I haven't as yet had much luck with HDR, so I just layer the bracketed shots and paint on masks for the bits I do, and don't, want. Apparently I'm ignorant, because I thought that was the basic idea of HDR processing anyway. -- Thanks, DougF (KG4LMZ) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
On Dec 11, 2007 9:57 AM, Doug Franklin [EMAIL PROTECTED] wrote: David Savage wrote: My advise is to bracket exposure. I haven't as yet had much luck with HDR, so I just layer the bracketed shots and paint on masks for the bits I do, and don't, want. Apparently I'm ignorant, because I thought that was the basic idea of HDR processing anyway. Creating a HDR image with specific HDR software is a bit different to layer stacking/masking, creates interesting results. If you're using PS CS2, give it a go. I haven't quite got my head around how to generate a decent looking HDR image. Cheers, Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
Igor, I sincerely think that taking a film camera with good negative film along might help. Another option of course is to use gray gradient filters in order to lower the d.r. Boris Igor Roshchin wrote: Does anybody have any tips on how to best shoot such shots with or without HDR in mind? (Other brutal comments are also appreciated, as always.) Thanks, Igor -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
Yes, I shot them in RAW. What I've done in the shot quoted is essentially changing the response curve - compressing some regions and bringing up others. Do you think what you suggest would be much different? It is the same information that would be used, so the only difference would be that the algorithm used for the HDR by PS is better then what I did by hand based on my intuition. Question for those who have experience with HDR images: How many images and what exposure steps do you use usually? Igor Thu Dec 6 00:19:02 EST 2007 P. J. Alling wrote: If you shot them in RAW you could convert them with different exposure compensation for each conversion then combine. That works rather well. Igor Roshchin wrote: I was able to pull one of the photos: http://www.komkon.org/~igor/PHOTOS/Argentina/IMGPa9855.jpg -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
The response curve will change similar tones everywhere. For example you want to darken the sky, but some of the foreground has a patch of something the same general brightness of the sky, you don't want to change that. Just changing the curve will effect both, in this hypothetical you need at least two layers. Igor Roshchin wrote: Yes, I shot them in RAW. What I've done in the shot quoted is essentially changing the response curve - compressing some regions and bringing up others. Do you think what you suggest would be much different? It is the same information that would be used, so the only difference would be that the algorithm used for the HDR by PS is better then what I did by hand based on my intuition. Question for those who have experience with HDR images: How many images and what exposure steps do you use usually? Igor Thu Dec 6 00:19:02 EST 2007 P. J. Alling wrote: If you shot them in RAW you could convert them with different exposure compensation for each conversion then combine. That works rather well. Igor Roshchin wrote: I was able to pull one of the photos: http://www.komkon.org/~igor/PHOTOS/Argentina/IMGPa9855.jpg -- The difference between individual intelligence and group intelligence is the difference between Harvard University and the Harvard University football team. -- P. J. O'Roarke -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
Sorry, I don't have any experience with how PS does the HDR, but I would naively assume that the same dilemma would be when you try to combine two (or whatever number) layers. Of course, masking a part of the photo would be the way out of it. Is this what you have in mind, or you are talking about some other mechanism that allows PS to resolve this issue in creating an HDR image? Thank you, Igor Thu Dec 6 14:53:59 EST 2007 P. J. Alling wrote: The response curve will change similar tones everywhere. For example you want to darken the sky, but some of the foreground has a patch of something the same general brightness of the sky, you don't want to change that. Just changing the curve will effect both, in this hypothetical you need at least two layers. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
Actually I use masking and layer transparency. But even if you're not using Photoshop whatever software you're using to combine the exposures is using layers of a sort. It's just easier than doing it by hand. I expect an expert using layers could do a better job, not that I could, but an expert. Igor Roshchin wrote: Sorry, I don't have any experience with how PS does the HDR, but I would naively assume that the same dilemma would be when you try to combine two (or whatever number) layers. Of course, masking a part of the photo would be the way out of it. Is this what you have in mind, or you are talking about some other mechanism that allows PS to resolve this issue in creating an HDR image? Thank you, Igor Thu Dec 6 14:53:59 EST 2007 P. J. Alling wrote: The response curve will change similar tones everywhere. For example you want to darken the sky, but some of the foreground has a patch of something the same general brightness of the sky, you don't want to change that. Just changing the curve will effect both, in this hypothetical you need at least two layers. -- The difference between individual intelligence and group intelligence is the difference between Harvard University and the Harvard University football team. -- P. J. O'Roarke -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Wide dynamic range in Andes mountains/Argentina (questions and PESO)
We had a very nice trip to the Andes in Argentina. The views were breathtaking. One of the challenges was the large dynamic range, especially in the afternoon, when shadows appeared. At one point I was trying to get the wild flowers in front, the mountains in the back, and the high-contrast clouds. I shot 20 shots with different exposures and , but the dynamic range of the digital is not that wide.. I was able to pull one of the photos: http://www.komkon.org/~igor/PHOTOS/Argentina/IMGPa9855.jpg For the reference, here are the same clouds in another shot: http://www.komkon.org/~igor/PHOTOS/Argentina/IMGPa9842.jpg (you can see how dark the front side is). And this shot shows the mountains: http://www.komkon.org/~igor/PHOTOS/Argentina/IMGPa9860.jpg I was thinking about creating an HDR shot in Photoshop, and may yet try to do that, but at the time of shooting I didn't have a tripod, so I'll have to see how well different shots match each other. Does anybody have any tips on how to best shoot such shots with or without HDR in mind? (Other brutal comments are also appreciated, as always.) Thanks, Igor -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Wide dynamic range in Andes mountains/Argentina (questions and PESO)
If you shot them in RAW you could convert them with different exposure compensation for each conversion then combine. That works rather well. Igor Roshchin wrote: We had a very nice trip to the Andes in Argentina. The views were breathtaking. One of the challenges was the large dynamic range, especially in the afternoon, when shadows appeared. At one point I was trying to get the wild flowers in front, the mountains in the back, and the high-contrast clouds. I shot 20 shots with different exposures and , but the dynamic range of the digital is not that wide.. I was able to pull one of the photos: http://www.komkon.org/~igor/PHOTOS/Argentina/IMGPa9855.jpg For the reference, here are the same clouds in another shot: http://www.komkon.org/~igor/PHOTOS/Argentina/IMGPa9842.jpg (you can see how dark the front side is). And this shot shows the mountains: http://www.komkon.org/~igor/PHOTOS/Argentina/IMGPa9860.jpg I was thinking about creating an HDR shot in Photoshop, and may yet try to do that, but at the time of shooting I didn't have a tripod, so I'll have to see how well different shots match each other. Does anybody have any tips on how to best shoot such shots with or without HDR in mind? (Other brutal comments are also appreciated, as always.) Thanks, Igor -- The difference between individual intelligence and group intelligence is the difference between Harvard University and the Harvard University football team. -- P. J. O'Roarke -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
