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by Jon

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4

Although it does not exactly answer your question, this article is really useful to understand what you can do when you have 2+ stops of additional DR available: Nikon vs Canon Dynamic Range It compares a Canon 6D (print DR according to DxOMark=12.1; the author selected this one because it is the Canon camera with higher DR) with a Nikon D800 (print DR ...


4

ACR updates for CS6 only include new profiles, no new functionality anymore. Lightroom is complaining because it potentially uses these features, which would get lost if you opened the file in CS6. so, unfortunately, you either have to use the "render via lightroom" option, or aquire Photoshop CC.


4

Just to be clear: the clipping warnings and histogram in lightroom are tools for development of photos. Not for analysis of the RAW-files itself. The warnings does (in the best case) warn you if you're clipping in the output format such as JPEG. The histogram works the same regardless of which module you're reviewing it in. In Lightroom the histogram ...


3

LibRaw supports this format (current development trunk). So, you may use any LibRaw-based software (digiKam or so), but you'll need to update/recompile LibRaw and software that using it.


3

On the quality front, in general, it will be better to do it in camera when the sensor is particularly subject to hot pixels (those that only appear stuck when heated) or when there is other heat related noise introduced in the image. At that point, the current conditions in the camera are more accurately represented by a dark frame taken at the same time. ...


2

Since there are many variables that affect the sensor read noise, taking the dark frame at the same time increases the chances that it is also taken under the same conditions as the exposed frame, particularly with regard to the temperatures of various areas of the sensor.


2

In order to match the type and character of noise accurately, the dark frame subtraction should be done at the same time as the exposure. So doing it in camera should yield better results.


2

The current unstable version of darktable includes full support for this camera and many others (including most or all modern Fujis). It uses rawspeed, a more modern raw parsing/decoding library, to handle it. An Ubuntu PPA that includes this support is available at: https://launchpad.net/~pmjdebruijn/+archive/ubuntu/darktable-unstable The normal ...


2

Denoising is a vast subject, there are a lot of methods and a lot of research papers about it in the literature. A simple and efficient algorithm that you can take a look at is called Non Local Means. Basically it aims at averaging pixels that look similar as there are a lot of redundancy in an image. You can do it on the bayer (by taking into account the ...


2

It does not show clipping in the raw file, it shows clipping on what you have generated from it. You will see that if you decrease the exposure or the highlights slider, the red area will change its size. One way to see clipping in raw files (and dozens of other things) is to get a copy of RawDigger. Highly recommended, btw.


1

The only way to examine the RAW histogram (pre WB, pre demosaic) is to use a program that has this capability. The only one that I can think of offhand is RawTherapee, but I'm sure that others will chip in with more choices. Edit: there's RawDigger as well.


1

The clipping highlights show the current state of your picture, ie. with all the development settings applied. as such, they can not really tell you accurately whether there is clipping in the RAW data. For this, you'll have to inspect the ends of the histogram to see any suspicious bars at the ends, and watch what happens when you manipulate the sliders. ...


1

Hmm, I think ISO is the control to how much electric potential you put through the sensor. Think of it like photovoltaics(solar cells), when it stores up an electric potential into a capacitor or battery, eventually the resisting potential stops more charge from building unless a stronger light source illuminates the photovoltaic. The resistance of low ISO ...


1

It will be showing the jpeg preview (a jpeg preview is embedded in each raw file) until the RAw file fully loads up. All raw files need a little PP in order to look anything like the jpegs you get out of camera. I remember it used to annoy me!


1

DxO 9 has a new PRIME algorithm that is marketed as being a very much improved noise reduction algorithm for high ISO images. Here is a link to start you off on the PRIME algorithm. PRIME by DxO I have used it myself and I am happy and quite impressed by the result. But it is very processor intensive and takes a long time to process each image.



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