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13

Why don't cameras show a histogram based on the RAW data rather than on the JPG preview? My notion is this: Because it would not be useful, because raw images don't yet have white balance in them, but the JPG images do have WB. For example, Daylight white balance will shift the red channel substantially higher, and the blue channel substantially lower. ...


12

The command-line utility dcraw can do this, using the dcraw -e flag. However, it apparently has issues with large images in Windows Vista and Windows 7 (see the FAQ on that page). IrfanView displays the embedded JPEG when opening some forms of RAW. If it's able to open your type, you can simply open the RAW and do a "Save as --> JPEG". This forum user ...


8

Use DCRaw: $ dcraw -e MyFile.NEF You will get a MyFile.thumb.jpg. It should work just the same with Canon files. More on Dcraw: http://www.cybercom.net/~dcoffin/dcraw/dcraw.1.html


7

I just discovered a way to do this. I'm using RawTherapee 4.2, but from your screenshot, I think this feature is in the version you used, too. It's in the toolbar just to the top right of the image. From my system: The blue, green, red, and gray squares let you preview individual color or luminosity channels — they're toggles you can click on. To the left ...


7

It actually depends on the camera that you have. You basically have two kinds of "Live Preview", the first using an automatic gain fonction to help you with the framing. It's the most basic one and for this, no matter what exposure setting you choose or modify, the screen will keep showing the same scene. The second type of live preview is called Real time ...


7

When you take a photo with a digital camera, The camera collects the raw data from the image sensor, processes it, and creates a JPEG preview image. This preview image is attached to the main image file, whether the main file is in a raw image file format or is a JPEG file converted from the raw data according to the camera settings current when the image ...


5

I think you should be able to do it using "exiftool" --- I tested on a Linux PC, via commandline, and with a Sony ARW image, so your mileage may vary --- I have no DNG to test with. The command is basically: exiftool '-previewImage<=myown.jpg' test.arw (the quotes are needed in Unix to prevent the shell interpretation of <=). I have a bit of ...


5

Don't forget that LR is a non-destructive editor. This means that for all sources, whether RAW or JPEG, LR does not alter the original in any way. It does this partially by building a database of the image itself, so that it renders changes on screen, mimicking how they would look in the final export. LR builds several previews, stored in the preview ...


5

You can get this for free with XnView: I have now written an easy tutorial to configure everything properly: http://ubuntuswitch.wordpress.com/2013/10/30/delete-jpg-and-raw-files-simultaneously-on-windows/ Works like a charm :-) Edit for Paul Cezanne: I do not have any plans to take the blog down, as I use it as reference for such problems, but here is ...


4

The image in the preview comes from an embedded JPEG inside the raw file which was generated by the camera, while the image you see when you open the raw file in Lightroom is generated by Lightroom based on the raw data itself. The raw image data is captured from the camera at a point before the contrast and color settings are applied by the camera, so any ...


4

Where you get the "File contains no Image data" after viewing files on your PC is generally down to various viewer and edit programs ADDING information to the original file. A simple test to see if it is the SD card that is corrupted is to put it into your PC and see if you can read all the files. If you can then the SD card if fine. Microsoft Photo Viewer ...


4

A little research has revealed the cause of this problem. The problem was only affecting those photos taken in portrait mode that had also been rotated on the computer to make them easier to view. By mistake I'd rotated them on the SD card rather than copy them first and rotate the copy (which I normally do). The Coolpix doesn't seem to store orientation ...


4

Most RAW files include a thumbnail for easy preview without having to process the image. It is not full resolution and is heavily compressed, so you don't need to really worry about the space consumption. Without it, nothing that doesn't know how to process RAW files would be able to show what the file contains. Ultimately, it is up to the camera if it ...


4

In general, it's a safe bet that this information is stored in the RAW file itself. With Canon, the preview is 1/4 the size of the original and a fairly heavily compressed JPEG, so I wouldn't worry about size.


4

You are correct. The D5100 does not have a Depth-of-field preview functionality. If you take a look at the list of Nikon DSLRs, the one with the icons in the shape of an iris have that feature. The D7000 just below the D5100 on the list has it. Typically, this function does not make it into entry-level cameras. The best you can do it take a test shot and ...


4

Just so you know: What you see on your camera is the embedded thumbnail in the RAW file. What you see on the computer is the software's interpretation of the RAW file. Most likely, your files are fine but the software is having trouble decoding the RAW files from your camera. This is a regular occurrence since RAW files are different between cameras. Most ...


4

The MacOS X feature that's responsible for showing you previews in Finder, Spotlight, standard file dialogs, etc., is called QuickLook. QuickLook needs an importer for each type of file that you'd like to preview. For standard types like text files, JPEG and PNG images, sounds, and others, the system has built-in QuickLook importers. In other cases, ...


4

Two possibilities that I can think of. If you are shooting RAW, then you may need to download the Microsoft Camera Codec Pack for Windows 7 which will allow Windows to create thumbnail images as previews You may simply need to change a folder view setting: Open Windows Explorer Click on Organize >Folder and Search options On the "View" tab, uncheck the "...


3

You can also look into using exiftool (also a command-line utility) to extract the embedded JPEG from your RAW image. EXIFTOOL - http://www.sno.phy.queensu.ca/~phil/exiftool/ This is the line I have in a batch file to run in Command Prompt (Windows): exiftool.exe -if $jpgfromraw -b -jpgfromraw -w extracted-JPG\%%d%%f_%%ue.jpg -execute -if $previewimage -b ...


3

Unless you ask Adobe, you will not get a definite answer but I can tell you why this is beneficial. I spend nine years working on a real-time image processing application and the way to achieve high-performance is to use something similar, we called it a Cache and Lightroom calls it a Preview. The basic principle is simple, you speed up loading by having ...


3

A lot of image view/edit softwares produce thumbnails of highres jpegs as it still takes quite some time to load a full size jpeg (note windows 7's hidden thumb.db files for example). 10Mpixel and above will also be quite slow to access from memory even on modern computers. Thus, internally softwares will rescale the images to the view as to not perform ...


3

The camera will display the image based on your existing picture control settings, but these settings don't specifically mean anything when dealing with the NEF after the fact. Lightroom has some presets (I don't use Aperture, so I can't speak to it) for raw development that apply a "start point" that are quite similar to the picture controls, but are not ...


3

http://www.irfanview.com/ Options - Properties/Settings - File Handling - Delete - For Experts: delete "sidecar files" Check the box and enter your camera's raw file extension and JPG, like so - CR2|JPG| Or in your case NEF|JPG| Works for me. great photo viewer and the price is right!


3

I got a Kata KT D-3N1-20 earlier this year, and I love it. Tried to find a good backpack with side opening for easy access and landed on the Kata. They have different sizes with and without a pocket for laptop/tablet. Based on the bag you have now you might want to look at the Kata 3N1-22 or maybe even the 3N1-33 (larger). I also have an old Lowepro ...


3

I've been loving my ThinkTank Photo Retrospective 10. One of the things it does well is fit my iPad. The iPad will fit easily in the front pocket, snugly in the back outside pocket, and tightly in the inside back pocket; none of which are in the way to get the camera in/out. There are several sizes; the 7 or 5 might be more appropriate for a small kit and 7" ...


3

Loewepro makes a messenger bag that might work for you: Loewepro Compuday150 I own it and like it a lot. There is also a similar backpack version.


3

If you look in the "Tools Menu" you'll see there's an "Adjust Size…" option. This does not do what you want, but it turns out you can use it to get what you need. You can do the following: Open your image and choose "Select All" (Cmd-A) from the "Edit" menu Choose "Copy" (Cmd-C) from the "Edit" menu Choose "New from Clipboard" (Cmd-N) from the "File" menu ...


3

Picture Profiles do not affect RAW data itself. Except that the EVF and LCD do not show RAW data, they cannot, since that data needs to be interpolated in order to produce an image. They must show an image, so they use the settings you choose in the Picture Profile to generate what is shown. The camera also uses the same settings to generate an embedded ...


2

In the classified series lowepro has this monster. I have it, I like it for a few reasons: 1) It carries quite a lot of gear. 2) The wallet part is nice, zippers closed, and is unobstructing/unobstructed by your gear. 3) It's fairly discreet(for such a huge bag). 4) The quality is very high(as with all the bags in this series). 5) It's not a backpack(I ...


2

The main reason Lightroom's generated preview is so different from the embedded one is because it's generating the preview with the Adobe Standard camera calibration by default, whereas the embedded one was generated using the Picture Control setting you have in the camera. To make Lightroom's previews closer to Nikon's, what you can do is: Create a ...


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