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JPEG is an adjustable "lossy" compression method commonly used in digital photograph. The most common filename extensions for images using the JPEG format are .jpg and .jpeg. Compare to alternative image formats such as TIFF and the various RAW formats.

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Where is a camera's preview image stored, when shooting in RAW?

When you take pictures in RAW, the camera stores a preview image (possibly jpeg) that it shown on the screen using white balance and other adjustments set in the camera. Where is this information ...
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2answers
367 views

How similar is in-camera JPEG processing to own brand RAW conversion?

We know that the JPEG produced by in-camera RAW conversion is very close to that produced by using the RAW converter provided by the camera manufacturer, but how close is it in detail? I'm interested ...
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2answers
5k views

Why does Photoshop show my JPEG files unusually large?

I recently opened a jpeg and a tiff of the same subject in Photoshop CS3. They both were made with a Nikon D300, and both had a file size of almost 35mb. If I checked the image info it said the jpeg ...
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votes
5answers
2k views

Is sips lossless when used for JPEG rotation?

I am organizing a group of old images on OS X. Many are JPEG and predate the EXIF tag for camera rotation. Of course, many tools degrade the image (Question '10') if you edit the image. It is possible ...
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2answers
234 views

How exactly is the deeper bit-depth of RAW mapped onto JPEG and the display?

I am trying to understand RAW better. I have a Canon EOS 20D, and shoot in RAW+Jpeg mode. According to the specs in the manual, the RAWs of the 20D are 12 Bit. I understand that this means each pixel ...
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3answers
2k views

Losslessly batch convert many JPEGs to sRGB?

Recently I came across a bunch of weird JPEGs; here's one of them. In Firefox 16.0.2 and ACDSee it looks much more vibrant: However in Internet Explorer 9/MS Paint/Paint.NET 3.5.10 (on Windows 7 ...
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votes
3answers
331 views

Why does LR seem to build a preview for JPEG's as well?

I am trying out shooting RAW+JPEG to see if that workflow is what I want. I am surprised to see that Lightroom still shows the "Loading" text when I zoom in on an unedited JPEG file. I expected that ...
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votes
3answers
4k views

Is there are any difference in quality between Large Fine JPG and converted NEF?

Assume that I do not want to do any post-processing, such as white balancing, etc. I would like to preserve the best resolution (for possible cropping). So the question is: Are there any quality ...
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1answer
233 views

How do I export JPEGs from Lightroom without the grey/black box around each picture?

How do I export JPEGs from Lightroom without the grey/black box around each picture? This is really frustrating me. I know there has to be a way to do this.
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3answers
766 views

How much post processing advantage is gained when scanning 35mm negatives as TIFF rather than JPG?

I am sending some C41 colour film to be developed. I'm not going to be requesting any prints, just scans of the negative to CD. I can choose between high resolution, high quality JPG or TIFF. The ...
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votes
3answers
2k views

Can I combine RAW & JPEG after import in Aperture?

I'm trying out Aperture; I have a hefty collection of photos in iPhoto, and for a few reasons, it's not cutting it for me anymore. I recently started shooting RAW+JPEG on my camera. I see that ...
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2answers
138 views

How to retain focus point information in JPEGs exported from Lightroom?

I just tried out a plugin for Lightroom that shows the used focus points and found that it works fine for RAW files (CR2), but fails for JPEGs. The plugin notifies me that the JPEG doesn't contain the ...
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4answers
6k views

What simple slideshow software would show JPEG images in a folder with alpha blending transition?

Who can recommend me a simple slideshow software that simply shows JPG images in a folder and allows alpha-blending between the slides? I really don't need more than that. The standard Windows 7 ...
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votes
3answers
5k views

Why are my recovered images only 160x120 pixels?

I am trying to recover some lost images, and with all the programs I've tried, some of the photos resulted to be in a 160x120 pixel resolution. What does this mean, and is there any possibility to ...
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votes
6answers
27k views

How can I convert Nikon D5100 .NEF files to .JPG?

I accidentally took some fairly important photos in .NEF (Nikon raw) format instead of my usual .JPG. I tried downloading the ViewNX program to convert the files (as suggested in another posted ...
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votes
3answers
1k views

Why do I have to convert RAW files to JPEG to open them? [duplicate]

Possible Duplicate: How do I get started with RAW photography? I am a new to RAW shooting and recently bought a Nikon DSLR. I find that only the software which came with the camera can open ...
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1answer
122 views

Is it possible to set the year instead of a complete creation date in a JPEG?

I use iPhoto to manage my pictures. Unfortunately I have many pictures from the 80s. These pictures are actually slides that I have scanned in during 2008. So my problem is that the creation date of ...
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5answers
1k views

Is there a way to export from lightroom to multiple formats simultaneously?

I frequently need to photograph my wife's textile works and output the results in several formats. She wants high quality, large jpegs; tiffs; and smallish jpegs for her web site, all of which go into ...
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2answers
3k views

Is there a way to recover corrupted JPEG files?

I'm wondering if there is a way to recover corrupted JPEG files. They got corrupted because I deleted a folder for error and I promptly recovered it with a recovery software. Most of the photos are ...
3
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2answers
178 views

How can I detect upscaled photos?

I have a collection of JPEG photos, each 500 to 600 pixels on the longest side. How can I detect which ones have been algorithmically enlarged from a substantially smaller photo? An online ...
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1answer
134 views

Can I use Darktable to export unmodified JPEGs without recompression?

To give you context: I shoot in JPEG Import into Darktable Edit some of the pictures Export all the photos for archiving as JPEG That's fine for images I've tweaked. But it would be nice if the ...
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3answers
2k views

Does reducing Lightroom export file size reduce image quality?

Sometimes I reduced the file sizes of my jpeg images for faster uploading to the web. Does this reduce the image quality?
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1answer
133 views

Why is there such a big difference with these JPG file sizes?

I have 2 nearly identical JPG images that have been processed externally, but one file is much larger (in file size) than the other. I have been looking at all the metadata and embedded information ...
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votes
2answers
2k views

What software raw converter can convert from .raf to .jpg, replicating the Fujifilm in-camera raw conversion algorithm?

Why I ask for software To perform batch conversion of many existing .raf files to .jpg. Why I want Fujifilm's algorithm, specifically I have tried Lightroom and Silkypix, and both fail to give ...
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2answers
4k views

How to import metadata from extermal .xmp sidecar file when importing .jpg files into Lightroom?

I have thousands of image files that I want to import into Lightroom. Some of the files are .nef, some are .jpg, .tiff, and other formats. If I have file1.nef and also have file1.xmp in the same ...
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2answers
358 views

Is there an quicker method (script/plugin) to export sidecar JPEG from Lightroom?

When I import RAW+JPEG in Lightroom I uncheck the option "Treat JPEG files next to raw files as separate photos" because I don't like the clutter this causes. Sometimes I do want to have a sidecar ...
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1answer
174 views

What does it mean to brighten an image?

Courtesy of my optometrist, I now have images of my retinas. However, the images are a bit dark. I have RGB values for each pixel. In this setting, is brightening the image equivalent to increasing ...
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votes
1answer
241 views

In Aperture, how can I export the preview of an image or locate the preview file?

I left my referenced masters elsewhere and would like to export the preview itself for sharing online. How can I grab a copy of it? I suppose taking screenshot is one possibility, but would rather ...
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2answers
523 views

Nikon in-camera vs lightroom jpg conversion [duplicate]

I'm just getting started with Lightroom 4. I've been shooting RAW + JPG using my Nikon D7000, but would like to just shoot RAW and then convert to JPG in Lightroom. What's the most efficient way to ...
3
votes
1answer
429 views

JPEG XR Plugin for Photoshop Elements 10?

I think I took a neat picture of a butterfly that I just used PSE10 to cut out of its background. Now, I want to package the butterfly as "free" clipart using appropriate tags to preserve my ...
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votes
1answer
165 views

How can I strip tags from a JPEG without removing the color profile?

For a while now I have used exiftool to strip away unnecessary metadata from jpg files (and to add copyright information) before uploading them: exiftool -all= image.jpg However, today I noticed ...
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4answers
226 views

Why do modern DSLRs support JPEG but not lossless formats other than RAW?

I'm from a programming background and very new to photography. While working with the SDK for the Canon Rebel T3i, I realized that the only image formats natively supported by the camera are RAW (CR2) ...
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1answer
747 views

Does reducing JPG resolution decrease, increase, or have no effect on image quality?

I'm getting ready to download a bunch of images from microstock photo agency Dreamstime. I'll eventually want most of the images in the 400x300 pixel range for my website when I'm done working with ...
2
votes
3answers
6k views

Should I use RAW or JPEG for wedding photography?

I am about to shoot in a wedding ceremony and would like to know, Should I shoot in RAW or JPEG? I asked a photographer (outside the US) and he said converting RAW into JPG changes color (or ...
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2answers
650 views

Does a JPEG image uncompressed to bitmap prior to displaying it on the screen [closed]

Does a JPEG image converted back to bitmap image when displayed on the screen? Does it occupy more memory than the actual file-size when it is being displayed? Does JPEG images, if added to the ...
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4answers
5k views

What image quality is lost when re-saving a JPEG image in MS Paint?

Has anyone ever noticed that if you open a image in mspaint (.jpg, .jpeg) and then just save it, the image size is reduced by many folds. I use this method to reduce the file size. However, I am not ...
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2answers
447 views

Good compromise on quality/compression for hi-rez photographs?

My Nikon D90 dumps out photographs that are 4288 x 2848 @ 300 DPI. They're about ~3 MB in size. I'm an amateur in every sense of the word. I don't know what 75% of the camera settings do. I'm ...
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votes
3answers
1k views

Why does simply saving a JPEG at 100% quality in Photoshop increase filesize?

If I take a picture taken with my EOS 60D, put it into Photoshop, edit it as I wish and save it as JPEG with maximum quality, the file goes from 5 to 12 mb in size. Obviously if I didn't increase the ...
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votes
5answers
1k views

What is a simple and effective method to sharpen for web output in Photoshop?

In Photoshop, I've got a master PSD image file with all mask and adjustment layer treatments, but no sharpening at all. I save for web and create a JPG at 1200px. Now, I bring that file back into ...
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votes
2answers
2k views

Is it possible to use the Photoshop CS raw editor for JPG files?

I would like to use the editor that opens in PS CS5 when you open a Raw file. I would like to use it on a jpeg file as I find it extremely useful to get the right colouring. Is it possible?
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6answers
1k views

why shoot RAW plus jpeg [duplicate]

I understand the differences between RAW and JPEG. But why does my DSLR offer me the opportunity to shoot RAW plus JPEG simultaneously. What benefits does this offer over RAW only, especially since I ...
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3answers
3k views

Should I use “Super Fine” or “Fine Quality” setting on Samsung S1050 camera? [duplicate]

I have a Samsung S1050 camera. There are three quality settings - Super Fine, Fine and Normal, which I believe relates to the JPEG compression level. I have mainly used Fine in the past, but wonder ...
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3answers
3k views

Is there a tool to check the file integrity of a series of images?

Sometimes when you're downloading an image and the connection breaks mid stream, you are left with a half downloaded image. If you try to view it you get the upper part of the image and the bottom ...
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votes
2answers
4k views

Why do I get two JPEG files instead of RAW+JPEG when transfering to my computer from my Nikon D5100?

I have a Nikon D5100 and I want to shoot RAW and JPG at the same time. I select RAW+N (RAW plus Normal Size JPG). Now when I export the shots to my computer I end up with two files called DSC_0123 ...
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3answers
190 views

Does size reduction in a fine quality JPEG photograph introduce noise?

Does size reduction in a fine quality JPEG photograph introduces noise? I use Gwenview to reduce the size of the JPEG photographs. Does that cause some noise introduction?
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2answers
221 views

Why does Adobe Camera Raw 6.4.1 offer different White Balance for different photos?

I am using Adobe Camera Raw v6.4.1 to view my Nikon d-90 photos on my computer and when I go to change the White Balance, for some photos I only get the choices: As Shot Auto Custom Yet for other ...
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1answer
421 views

How can I set my Canon 5D Mark II to JPEG only?

I'm trying to find out how to set JPEG only mode on my Canon 5D Mark II - which options do I need to set from which menus?
2
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2answers
588 views

Is it possible to make a 1-bit (bitonal) JPEG?

I think the answer is no, so I guess what I'm really looking for is an explanation. It seems as though with every library and tool I've tried for converting images, even when all of the pixels are ...
2
votes
1answer
149 views

Where should I store the metadata for personal images?

I'm adding coordinates, location, country name, my name, url, and occasionally a description to my photos. They are all in the JPEG format. I use them mostly for personal use but give some away to ...
2
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1answer
120 views

Why do some programs show my portrait photographs in the wrong orientation?

Why do my jpg phone photos show as portrait in Windows (1536x2048), but in Mediainfo and Paint Shop they show as landscape and rotated ccw (2048x1536)? It's as though they have two sets of meta data ...