Shadowy Daisy

Shadowy Daisy
by damned-truths

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9

TIFF is a container format which supports a collection of other standards and like any container what's in it will be entirely down to what you (or whoever wrote the TIFF export you're using) has decided to put in it. At a guess from the file size your converter has gone to 16bpc/RGB uncompressed. If so then that file size looks about right. If it is ...


3

Basically, a RAW file stores data directly from the sensor of your camera. Most DSLR are using what is called a Bayer filter (https://en.wikipedia.org/wiki/Bayer_filter) to retrieve information about color. Usually, for 4 "pixels" (sensitive elements), 2 are used to get information about green, 1 for red and 1 for blue. However, keep in mind that this sensor ...


3

It is possible and even trivial but I am not aware of any application to do that task specifically. There reason why the file size changes when rotated is that TIFF files are encoded losslessly as one would compress a stream of pixels components from one corner of the image to the opposite one. If you consider Run-Length-Encoding (RLE) which a common TIFF ...


2

scotbb answer is good. I like he is using math formulas, but I will complement that. In my opinion that person on the lab is telling you mumble jumble! Lets put this simple: 16x24 inches at 300ppi are 4800x7200px. Thoose are 34.5 Megapixels. Period. Any picture on a jpg format, regardles you are using the maximum quality will most likley under 20Mb. ...


2

What about final resolution? [80 megapixels max] How to convert from one to the other? Your print dimensions of 16" x 24" means the aspect ratio of your print is 24/16 = 3/2 (i.e., 3:2). So the ratio of vertical pixels to horizontal pixels h/w = 3/2 (assuming portrait orientation). Let's write that as h = w * 3/2 You know that the product of horizontal ...


2

pixel has different meaning in spheres of display technology and sensor technology. pixel of RGB Bayer sensor is represented by only one number (roughly one colour) while pixel of most of RGB graphic displays is represented by three numbers. The number of pixels noted on cameras is not the number of dots divided by four - it is actual number of dots on the ...


1

No. Take a simple example: suppose you shoot a pic of a table with a lamp on it. Shoot the same scene a few times, changing nothing but the brightness of the lamp (use a dimmable bulb :-) ). How would you know after the fact which image's gamma was due to post-processing and which due to the contrast between bulb brightness and dark corners of the room?


1

Compression is something you can see yourself, so I'll focus on interoperability and long-term preservation. The EU's Succeed 2014 Recommendations for metadata and data formats for online availability and long-term preservation recommend "Uncompressed or LZW compression" for TIFF masters (p. 68) and note that «If files are actively managed in a digital ...


1

Here is discussed the same issue. And multipage TIFF is standard, not error. So you should check why your MATLAB libraries do not support multipage tiff or use instruments to remove second page or make matlab libraries work only with first page


1

Answering to myself in view of the not-sufficiently-good answers, I have found that apple's scriptable image processing system (sips) is able to transform RAW to .TIFF images with only one subfile (the actual image). In particular, I have used the methodology described here: Can I convert raw files to TIFFs via the command line using Apple's converting ...


1

This is completely valid for a TIFF image. There is in fact no limit to the number of subfiles a TIFF may contain You should either update your routines to support this, or use an intermediate program to rewrite them in a way your code expects.


1

At your step 5., when you export a RAW file from LR to PS (or when you open a RAW file with PS, make some editing and then save it in TIFF format and import it back to LR), a TIFF get created. However, this TIFF has no sidecar file attached, so you won't find any. So back in LR with a TIFF file, you expect the changes you made to be saved in a XMP file... ...



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