One shot HDR
May 31, 2016 21:45:33 #
GENorkus wrote:
Just thinking: Isn't one shot HDR pretty similar, not the same but similar, to ordinary dodging and burning???
If starting from a raw file I would say yes. If starting from a single jpeg I would say no, because some of the detail that you want to dodge and burn with has already been discarded in the jpeg processing...
May 31, 2016 21:55:27 #
MontanaTrace wrote:
My recently purchased Sony A6000 has in-camera HDR and DRO. Check out the DRO. Dynamic Range Optimum. One shot, designed to replicate the advantages of handling extremes, like HDR.
Yes, the one shot DRO (Dynamic Range Optimization) is a lot like HDR except it is only one image, and it works for RAW images too. You can turn it to OFF, or to AUTO, or select Range 1, 2 or 3. When I shoot with it, I see the shadows lighten up and the bright areas not so bright and it does do a pretty decent job of emulating HDR. Now its not as good as HDR, but it only requires one shot, and many times you can't take another shot. I suspect it is playing with a curves adjust where it does what you might do manually in a photo editor. I have never tried to compare what it can do to what I can do manually on my own.
May 31, 2016 22:05:55 #
sb wrote:
I have wondered the same thing - why does in-camera HDR require three different shutter-clicks? Why can't it access one image from the sensor with the automatically metered ISO setting, then access two more images instantly using two different ISO settings - one or two stops up and one or two stops down? Seems reasonable.
Isn't this what teasing an HDR sequence out of a "one shot " RAW capture is doing; vary the exposure in the RAW converter and then doing multiple saves with exposure variation... Photomatix does a good job using this technique.
May 31, 2016 23:06:15 #
Bobspez wrote:
Attached is an old low res digital pic of deer. I made a copy and brought out the background in photoshop shadows and highlights (second pic). The third pic is the photoshop HDR merge of the two shots. I set the EV of the bright shot at 9 and the EV of the dark shot at 3. Tweaked the saturation and hue of the HDR shot after merging the two shots. Not a great example but an indication of how the PS HDR merge can highlight separate areas of the single pic.
In this case your HDR made a nice photo from a mediocre photo. Great job.May 31, 2016 23:15:34 #
There is an "HDR" setting on some Nikon cameras. As well some edtiting platforms can create an HDR look.
Jun 1, 2016 07:38:03 #
GENorkus wrote:
Just thinking: Isn't one shot HDR pretty similar, not the same but similar, to ordinary dodging and burning???
To me it does not seem to behave the same. Dodging and burning seems to alter saturation and perhaps even hue whereas HDR seems mostly to affect luminosity. I've never taken any measurements however, this is just my impression.
HDR seems to behave more like tone mapping, though it seems to me that tone mapping behaves quite differently depending on what software implements it.
Jun 1, 2016 09:34:15 #
pecohen wrote:
To me it does not seem to behave the same. Dodging and burning seems to alter saturation and perhaps even hue whereas HDR seems mostly to affect luminosity. I've never taken any measurements however, this is just my impression.
HDR seems to behave more like tone mapping, though it seems to me that tone mapping behaves quite differently depending on what software implements it.
HDR seems to behave more like tone mapping, though it seems to me that tone mapping behaves quite differently depending on what software implements it.
FYI:
Capture One 9 (CO1), does not alter the saturation or hue. Other post programs will probably have that ability before too long since I feel they copy alot of CO1 features.
Jun 1, 2016 09:48:52 #
rwilson1942 wrote:
This technique is done in HDR software by making two (or more) copies of the original photo and changing the exposure +/- of the copies.
That might be possible in camera but I doubt that any manufacturer would implement it.
That might be possible in camera but I doubt that any manufacturer would implement it.
Photomatix Pro can take a single image and do this. If your camera shoots raw and has a broad contrast ration, the resulting HDR image can be quite satisfying. It can also do it with a TIFF file or a high-quality JPG file.
Jun 1, 2016 13:04:43 #
Yes, that's another way to do it, but dodging and burning requires some effort in accurately covering the right pixels with the mouse pointer, and doing it the right number of times. With the technique of making a copy and changing exposure or tweaking shadows and highlights on the copy, you can do it in one shot and know roughly what the final image should look like before the HDR merge.
GENorkus wrote:
Just thinking: Isn't one shot HDR pretty similar, not the same but similar, to ordinary dodging and burning???
Jun 1, 2016 13:16:02 #
Thanks. I just wanted to show how the features in the shadows could be brought out without overexposing the rest.
Bob
Bob
WF2B wrote: In this case your HDR made a nice photo from a mediocre photo. Great job.
In this case your HDR made a nice photo from a mediocre photo. Great job.Jun 1, 2016 16:02:02 #
My fuji point and shoot has an EXR setting that combines two copies of the same single image just like you said. Not necessarily HDR in boosting all levels but it stops the extremes of light and dark into an acceptable image.
never decry a point and shoot....
never decry a point and shoot....
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.