Like a few others on this forum, I am interested in HDR. I shot this from within a tram in Trondheim, Norway. The raw file is perfectly exposed for the outside, but the inside of the bus is completely dark. I did 2 conversions from the same raw file and merged them. One could do the same with 3 or 4 different raw settings and combine them. Is there any disadvantage using this method to shooting a bracketed series of shots for HDR processing? D700 24-70 f4 ISO 200 Jean-luc
In a shot like this, if the trams were stationary, you didn't have any ghosting or alignment issues, at least if the camera was stationary too when you took the series of bracket shots. But in most nature scenes ghosting is an issue when multiple shots are combined.
On the other hand, single-shot HDR processing suffers from two potential problems. You may run out of dynamic range altogether, and even if you don't, the extreme shadows typically suffer from noise and the extreme highlights suffer from lack of detail.
Good job with the combination of processing versions. I can't see any halos or other artifacts.
Sun 17-Feb-13 02:20 AM | edited Sun 17-Feb-13 02:21 AM by Bump57
Antero summed his response up nicely. I would add that for this type of processing it is sometimes not even necessary to make the different exposures from the single, just send the single through. I find in most cases the result is the same. This is coming from someone who has used Photomatix since it came out.
P.S to add: You did a nice job on this image. It looks very natural and I would have not know this was processed like like you stated.
Nothing to add really. I've used up to five copies of one shot for an HDR merge and found that it works fine. Antero made a good point about ghosting. If you had not used a single shot there is no way to capture the oncoming tram the way that you did. I agree, you did a nice job. It's a very natural looking shot.
Thank you Antero,Scottie,Scott for your comments. Yes, the oncoming tram was moving, so several shots was not really an option. Thank you for answering my question, I just have a query left: This was a manual process: I processed the same NEF twice and merged them manually. I have never used the CS6 HDR facility and do not have photomatix. Are these packages clever enough to remove some of potential halos by realigning some elements in the picture (like the photomerge for panoramas)? Scott, have you compared CS to photomatix, as I read that CS6 HDR processing is quite good. Thank you again for your information. Jean-luc
Jean-luc, Thank you very much for introducing me to this technique. It is brilliant, as it is the same "stationary" image I can not see why there should be any ghosting. With a single process I would have found it very difficult to apply selective brightness or exposure in this example. I can not wait to try this.