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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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45
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7answers
6k views

Why don't most cameras support PNG format?

I prefer PNG format to JPG, because JPG uses lossy compression. When I capture a screen in my PC or scan a picture or document in my scanner, I always save them as PNG format. If a camera could ...
8
votes
4answers
4k views

How to delete JPG files, but only if the matching RAW file exists?

My early (Canon G2) photos are all JPG, but when I got my Nikon D90 I initially shot in JPG, then switched to RAW+JPG, and now I would like to switch to RAW only. I have literally thousands of photos ...
10
votes
3answers
18k views

Should I use JPG or TIFF for high-quality prints?

I am putting together a photo book. I shot all the photos in RAW. The prints will be 300pi on 13x11 inch glossy paper. I am laying out the pages in InDesign, which doesn't allow me to import and place ...
1
vote
1answer
56 views

Repair corrupt photos recovered from a flash memory card [closed]

I recovered few pics from my flash memory card of class 10. Now these photos are not opening in any photo viewer. Images are of RAW and JPG format. When click on image it says "Invalid Image" How do I ...
0
votes
0answers
36 views

Does this appear correct? Comparison of PSD & TIFF file sizes when using adjustment layers. [duplicate]

I've been investigating file sizes after noticing my 16 bit TIFF files grow enormously after adding adjustment layers (saving with layers, not flattening). Here's what I found: File #1 (0 layers) ...
1
vote
1answer
47 views

Is it possible to extract a JPEG that has been converted into DNG?

It's possible to convert JPEG's to DNG in Lightroom. Is it possible to extract the original JPEG again after conversion (a 1:1 identical copy to the originally imported one) later on?
0
votes
1answer
50 views

Corrupted photos [duplicate]

Unfortunately SD Card (Kingston 64gb) that I've used in a photoshoot appeared to be faulty and large part of images taken are simply not visible. However I've been able to copy the files from the ...
7
votes
2answers
3k views

Do jpgs have “layers”?

I have jpg photos with frames put on them which a friend made for me. I noticed when I open the jpgs though, that the image loads first and then the frame loads on top of it (that is, I can see the ...
40
votes
2answers
7k views

Are “Windows Photo Viewer” rotations lossless?

Can I rotate lossily compressed photos that I view in Windows Photo Viewer without worrying about losing even more information to compression?
2
votes
1answer
54 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 ...
19
votes
9answers
2k views

Why store both JPEG and raw?

DSLRs often have the ability to store both a JPEG and a raw file. Given that the primary benefit of in-camera JPEG over raw is the smaller filesize, and that JPEG+raw is going to store even more data ...
1
vote
1answer
106 views

Can firmware upgrades significantly increase JPEG quality?

I've been wanting to bite on the new Sony a7 mirrorless full-frame camera, but reviews are surfacing poor JPEG quality compared to other FF cameras. While I often shoot RAW, JPEGs are critical if you ...
1
vote
2answers
490 views

DPP output is not sharp

I am using DPP (Digital Photo Professional by Canon) for post processing. Not sure what is wrong with it, but every time I produce an image (.JPEG) out of raw (.CR2) file, it turns blurry. I tried all ...
0
votes
3answers
265 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 ...
0
votes
1answer
50 views

Is there a free tool that can set the file time to match the camera time in jpg meta data? [duplicate]

I have a bunch of pictures for which something went wrong during the import (I used Image Capture on Mountain Lion) went wrong and the file time is completely random. The correct time when the picture ...
2
votes
3answers
2k 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 ...
8
votes
3answers
2k views

How to delete “unused” raw files which have no .jpg match?

I shoot RAW+JPG, namely NEF and JPG. After viewing sometimes hundreds of images (using a simple program) and deleting the JPGs, I have many unnecessary leftover NEF files. If there was a script to ...
0
votes
1answer
96 views

JPG Images recovered immediatelly after deleting from SSD, but 95% of files can't be opened

So I have Windows 8. I SHIFT+ENTER accidentally deleted all pictures instead of half. I used global purpose "File Scavenger 3.2" program, which was always working perfect for last 5 years to restore ...
8
votes
2answers
2k views

Pentax K-5: Is it worth using the Premium JPEG quality setting?

Similar: How do I choose which resolution (megapixel) and compression (normal, fine, superfine) to shoot in? The Pentax K-5 has a JPEG quality setting called "Premium", denoted by four stars, which ...
5
votes
4answers
1k views

What tool produces better quality jpeg: Lightroom or Imagemagick?

I'm using Lightroom for photo workflow. At the end of it, I would like to have the best JPEG I can get, basically two options to choose from: - export from Lightroom to JPEG, using the 100% Lightroom ...
1
vote
1answer
174 views

Why does the sound seem different when taking picture in RAW vs JPEG?

I'm using Nikon D300. I've just switched image format from RAW to JPEG today. The sound of shutter seems different (faster than in RAW format) although they're as same shutter speed (I know that ...
1
vote
1answer
101 views

Extracting unique ID of images [closed]

I messed up my image collection and it now contains a lot of duplications. Unfortunately, the file names are not unique either as the collection is coming from several devices that simply order the ...
4
votes
2answers
185 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 ...
2
votes
1answer
81 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 ...
1
vote
2answers
311 views

How can modified images be displayed on a Nikon camera?

I made changes to my RAW images in Lightroom and exported them as JPEG to save on an SD card which I inserted into my camera. When I tried to show the pictures to my family and friends, I got the ...
5
votes
2answers
213 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 ...
2
votes
6answers
259 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 ...
3
votes
6answers
17k 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 ...
3
votes
2answers
236 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 ...
11
votes
3answers
4k views

Does Flickr recompress JPEGs after upload?

Does Flickr recompress JPEGs after upload? I know that if you upload a TIFF, for example, Flickr converts it to JPEG. But do they also compress incoming JPEGs? I've read some complaints about the ...
5
votes
3answers
1k views

Why do RAW images look worse than JPEGs in editing programs?

I've found that when you load a RAW image into an editing program such as Lightroom/Aperture, the image is usually worse than if you just took the image as JPEG. Now I understand that the camera does ...
3
votes
3answers
864 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 ...
4
votes
4answers
4k 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 ...
1
vote
0answers
158 views

Why does ViewNX suddenly give an error with NEF files from my D90 but not my D700?

Previously my D700 & D90 have downloaded NEF files to my computer within View NX and I have been able to convert these images to jpeg within this program. My D700 continues to do this. However, ...
5
votes
4answers
736 views

Why does Darktable export enormous JPEGs?

I have a Nikon D3200 and just started shooting in Raw. Raw files are 18-24mb, and if I convert them to JPEG using Nikon's ViewNX 2, I get 8-12mb files at the top quality and resolution using sRGB; ...
1
vote
3answers
302 views

Lightroom: Print Module or Develop/Export for online printing in specific aspect ratios?

Which is better? Use the Develop module to crop an image to a specific ratio and then export it to a JPEG or use the Print Module and print them to a JPG with a specific page size (aspect ...
2
votes
4answers
2k 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 ...
18
votes
4answers
111k views

What are the optimal JPEG settings for high-resolution Facebook photos?

With the current facebook photo uploader, what are the optimal settings for uploading high-resolution photos. I process my images in Adobe Lightroom. I'm aware of a similar question asked in the ...
0
votes
0answers
670 views

how to repair a corrupt jpeg? [duplicate]

I am putting together a slideshow of 10+ year old digital photos for a slideshow and found that one of my external hard drives has a handful of corrupt jpg images. I was able to copy the images off ...
3
votes
2answers
282 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 ...
2
votes
2answers
212 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 ...
1
vote
2answers
187 views

How do I convert/re-compress select photos in Lightroom in-place?

As my Lightroom catalog grows there are some photographs I would like to preserve, but where I don't need all the editing latitude offered by RAW. I know I can convert them to DNG, but are there ...
3
votes
3answers
703 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?
2
votes
1answer
121 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 ...
1
vote
3answers
211 views

Is conversion to 16 bit needed for good PP results when working on JPEG images?

When working on JPEG files, should I start by converting the images to 16 bit depth? Supposedly that would make for more room for the adjustments I'm going to make on the photos. Two occasions that ...
1
vote
2answers
670 views

Saving as PDF with JPG compression vs saving it as JPG

I am creating a booklet with a hight resolutio (more than 4800 pixels height) and I am about to print it. My question is, what is better in terms of quality: Saving each page as a PDF with JPG ...
1
vote
3answers
666 views

Should I use Active D-Lighting when shooting Raw?

I understand (ref) that I can do my own post processing to get the same effect that Active D-Lighting gives. But does the in-camera ADL get applied to the raw image data or is it only done to the ...
9
votes
2answers
5k views

How does Darktable compare to Adobe Lightroom for editing JPEGs?

I mostly modify JPG images taken from my Nikon camera. How does Darktable compare to Adobe Lightroom for this purpose?
6
votes
3answers
2k views

How can I easily replace raw files with jpeg format in Lightroom?

I only shoot in RAW, but for a normal travel trip I don't want to keep all photos in RAW because they occupy a lot of storage space. Is there a plugin in Lightroom to click a photo and convert the RAW ...
11
votes
9answers
27k views

What were the optimal JPEG settings for Facebook photos in 2010/2011? [closed]

Every time I upload a photo to facebook I'm disappointed; the photos just look really bad. What size do you recommend, dpi, etc? If it helps, I'm using lightroom.