Bracketing vs RAW (saving 3-5 exposures -2 to +2 for blending purposes
Dec 5, 2016 16:25:19 #
rmalarz wrote:
If you use techniques like ETTR and EBTR, you'll find you'll capture the range necessary without having to use multiple exposures, or HDR.
--Bob
--Bob
Thank you. I will try ETTR. Never thought to use it for this purpose.
Dec 5, 2016 17:58:43 #
catchlight.. wrote:
Lightroom has an automatic feature for combining up to 4 exposures in Raw and Photoshop you would stack Raw images. Editing in ether program is normally done in Raw for the best image quality. Bracketing for any reason can be controlled with masking in Photoshop when combining Raw images unless you go for a generated HDR effect in a program like Lightroom. Photoshop will give you endless possibilities with Raw images.
Neither program edits raw sensor data. They edit RGB image data derived from interpolating the RAW file. Which is to say it is exactly the same as editing data from a 16 bit TIFF file. If files are combined for HDR that is how it is done. Nikon cameras can actually combine raw data from multiple exposures, which combines to a single RAW file that is then interpolated. No post processing editor can do that.
Dec 5, 2016 18:09:19 #
amfoto1 wrote:
Not true. It can be done with a single image, too.... (show quote)
You are saying the camera can record a greater range than it can record! He said if the scene is greater than the cameras dynamic range. What he said was true.
Also your additional comments about the "multiple exposure" feature for Nikon cameras in the other thread were incorrect then and now. The feature does not affect dynamic range and is not a way to accomplish HDR.
Your examples of HDR do show how useful it is and they are excellent!
Dec 5, 2016 18:12:21 #
TheDman wrote:
It would certainly take me longer, but the result would be as good or better and would have the added benefit of not going through Photomatix.
Photomatix gives much better tonemapping results than PS. I've tried them all and in my opinion Photomatix is head and shoulders above all the others with their recent addition of a new local tonemapper. PS is way down the list.
Dec 5, 2016 18:14:24 #
Apaflo wrote:
Neither program edits raw sensor data. They edit RGB image data derived from interpolating the RAW file. Which is to say it is exactly the same as editing data from a 16 bit TIFF file. If files are combined for HDR that is how it is done. Nikon cameras can actually combine raw data from multiple exposures, which combines to a single RAW file that is then interpolated. No post processing editor can do that.
What? A raw combined file? What function is that? Does my D800 do it?
Dec 5, 2016 18:20:00 #
Ratta wrote:
The reason I ask this is because there is no way ghosting will be reduced or eliminated when processing bracketed shots of turbulent surf, which is what I was trying to do.
Surf does not have a super-high dynamic range. In Photomatix you can select the turbulent surf and let the rest be tonemapped. Here is an example.
Dec 5, 2016 19:15:59 #
TheDman
Loc: USA
kymarto wrote:
Photomatix gives much better tonemapping results than PS. I've tried them all and in my opinion Photomatix is head and shoulders above all the others with their recent addition of a new local tonemapper. PS is way down the list.
No tonemapping, just manual blending, which IMO gives the most natural result. Here is a blend of two images: one focused on the cliffs at ISO 100 and the other focused on the flowers at ISO 1600 to freeze them from blowing in the wind. This not only allowed me to stop motion while exposure blending, but also allowed for some focus blending as well. A rather simple example, but it illustrates the point.
Dec 5, 2016 19:17:37 #
Dec 5, 2016 19:56:09 #
kymarto wrote:
What? A raw combined file? What function is that? Does my D800 do it?
Yep, exactly that! It's been in Nikon cameras (at least the high end ones) since the D2X.
In the shooting menu look at "Multiple exposures" (page 195 in the D800 User's Manual). If you enable Auto Gain the effect is to average however many shots (up to the limit of 10) that is taken. If it is off it just sums all the data. Averaging exactly the same scene multiple times will come up with almost exactly the same "signal", but because noise is random the noise will not average as high on any given pixel that has high noise. Hence the SNR will be reduced. Just summing is about the same as a higher ISO.
I've found it interesting to play with, but never have done anything significant with it.
I would think that jobs like shooting interiors, especially in places where a tripod is allowed but flash is not, would be great with this feature. Churches perhaps, and maybe in galleries or museums if you can get permission to use a tripod.
Dec 6, 2016 05:03:23 #
kymarto wrote:
Surf does not have a super-high dynamic range. In Photomatix you can select the turbulent surf and let the rest be tonemapped. Here is an example.
For this kind of shot I absolutely agree. I bring this up every time someone asks about graduated NDs. But my shot of the market in China would not have been amenable to this technique, and very possibly neither would surf against the sky.
Dec 6, 2016 05:05:03 #
Apaflo wrote:
Yep, exactly that! It's been in Nikon cameras (at... (show quote)
Ah! Right. I had forgotten about this.
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