Overview of the features of the latest version

I am always working on new ideas, trying to improve the experience and most important the result of the conversion. Here’s a short overview of what has been done so far:

Correct blacklevel setting to fix green or magenta shadows

Well this is something that did cost me really a lot of time and in the end the solution really was quite easy! The RAW files have their value 0 quite below the actual values you’d get with a black image (let’s say taken against the lens hood). If the blacklevel is not set correctly, your RAW converter will mess the shadows up when applying the white balance on the files. For more information see blacklevel

Fix vertical hot pixel lines on the sensor

fixline_and_dfAs you can see on the image to the right, many M8 do have a hot or stuck pixel somewhere on the sensor. Normally you won’t notice, but from time to time the frozen pixel affects the whole column below it on sensor readout. Depending on the row that failed you either get a bright blue/turquoise line (the adjacent red-green pixel column is darker) or a bright red/magenta line (the adjacent green-blue column is darker).

Some people don’t see them in their DNGs, but in the RAW file. That means it has been mapped out in camera by Leica. But what happens, if you encounter a new line? The solution so far was: send it to Leica to have it fixed. Takes a while, you bet!
Now you can do it yourself in a matter of minutes. Just read the information on sensor fixes.

Fix dark field of the sensor

darkfield_uncorrIf you take a really dark image, let’s say against the lens cap, you’d normally expect to have an even black image. Well you certainly get one with the M8. But start to brighten the image in your raw developer and suddenly you get something like that image here on the right. (Don’t mind the pink color, that comes from the white balance and is normal)
That is not really flat and even at all! Especially the sharp line in the middle of the image may be quite distracting on a night shot. Where does it come from? Well, the reason is that the CCD of the M8 is readout at two positions, each position responsible for one half of the sensor. And they almost never are calibrated correctly to produce a flat image.

darkfield_corrWith m8raw2dng you can do that yourself and get something like the image on the left here, which is the same image after correction. Not bad, huh?

As this is a feature of your specific camera, you have to let the tool analyse such an image once, but from then on it shouldn’t differ much from image to image, so you can fix that on every image with the same corrections. More information at the sensor information page.


Fix exif data errors, add custom lens information

So you have a coded Lens which either is not exactly the one that it is coded to (for example older 35 summicron version) or a non Leica lens (Zeiss, Voigtländer, Minolta, Canon, etc). I do have some and I found it always annoying to have the wrong information in my image database. Not only does the name of the lens not fit, but also the apertures are sometimes really odd. Having values that you don’t even have a click on your lens for and such. Or if you have an f1.2 lens you can only code it as 1.4 lens. That can now be fixed. :)
In the fixed file you’ll have realistic apertures (not always correct, as it still has to be guessed, but at least not something you can’t set on your lens), correct lens model, maker and serial number. It will show the focal length, maximum aperture and aperture correctly in your browser and the shutter speeds do not have weird values like 1/3003s any more.


Stay tuned, as there is more to come / planned… :) For feature suggestions contact me. Most of your ideas can be implemented pretty quick. I just don’t always know what you need or want. So let me know!