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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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18
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4answers
122k 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
812 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
364 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
297 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
215 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
983 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
124 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
2answers
220 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
886 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
820 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 ...
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
28k 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.
4
votes
3answers
565 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 ...
0
votes
1answer
202 views

What's the difference between using RAW or JPG with After Effects?

I am making some timelapse videos. And I have around 1500 photos in RAW format. I did some adjustoments in Lightroom and then imported these RAW files to After Effects. But After Effects processed ...
202
votes
11answers
31k views

Good examples of RAW's advantages over JPEG?

I'm curious to see some real examples of where simply capturing the same photo in RAW (and being processed by someone who can do it justice) has significantly improved the photo at the end of the ...
2
votes
1answer
573 views

Which Windows raw image viewer can only show jpeg, but on delete both raw and jpeg?

I'm searching for an image viewer with the following features: (situation is, that both jpeg and raw are saved) windows (7) support when clicking through pictures only show jpeg when deleting photo, ...
0
votes
1answer
177 views

SmugMug pixelation in dark parts of jpg from lightroom

I'm new to Lightroom and new to SmugMug, so I'm hoping someone can help me out. I have this set of photos I took of a sunset, shot in jpg, edited in Lightroom to my liking and then published via the ...
2
votes
3answers
365 views

Is it better to print from jpg or tiff on A2 paper?

I just read the answers here, but if we are talking about printing high quality in A2 format (that's about 16"x23", for those not used to ISO standard paper sizes) on a good printer, is it possible to ...
4
votes
7answers
6k views

How can I easily convert a large number of pictures from RAW to scaled down JPG?

I have a collection of shots from the same session in RAW and want to covert all of them to JPG. Each one should have a curve applied, then be scaled and sharpened using the same settings. What is ...
6
votes
2answers
2k views

How to identify photoshop-edited files

If I have saved an image in JPG format after doing some edits, is there a way to identify that it is edited with Photoshop?
1
vote
1answer
131 views

Optimal JPGs resolution out of a Point & Shoot camera for storage size and quality? [duplicate]

Simple point & shoots don't produce RAWs, they produce JPGs. Let's assume you have a modern P&S which shoots 16 megapixels maximum in Super Fine, Fine and Normal JPGs. First side question is ...
17
votes
6answers
6k views

What are jpeg artifacts and what can be done about them?

I know JPEG is a "lossy" compression algorithm that discards information in order to save space. What is the visual impact of this? I've heard of "JPEG artifacts". What do these look like? Are there ...
1
vote
2answers
658 views

How to scale down images in Lightroom while maintaining quality?

I am working with a product photographer who is having issues understanding dpi and resolution. She is shooting products to go onto a website using a Canon 5D and an ortery box. I have asked her to ...
3
votes
2answers
2k 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
votes
3answers
3k 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 ...
3
votes
2answers
1k 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 ...
2
votes
1answer
219 views

Does Lightroom export white-balance temperature and tint value to JPEG metadata?

When I export a JPEG from Lightroom 3.6, is the white-balance temperature and tint value written in the JPEG file somewhere? Could I later take that JPEG and see (in the EXIF for example) what the WB ...
6
votes
3answers
204 views

How can I reverse-engineer the RAW conversion settings used in a JPEG image?

I've lost my Lightroom catalog during OS migration. I have couple of JPEGs developed from RAWs and would like to put few more JPEGs from other RAWs in similar mood. Is there a way to reverse engineer ...
4
votes
3answers
225 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 ...
7
votes
6answers
4k views

What quality to choose when converting to JPG?

When you export a picture to JPG you can normally choose its quality in a 1-100 scale. I like to keep a good quality but it wouldn't make sense to keep a JPG that will be almost as big as the original ...
4
votes
1answer
1k 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 ...
1
vote
2answers
624 views

Should I shoot in RAW or Fine JPEG [duplicate]

Possible Duplicate: What are the pros and cons when shooting in RAW vs JPEG? I am a beginner hobbyist and am a little overwhelmed by all that is involved with DSLR photography. Having ...
3
votes
1answer
150 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 ...
11
votes
4answers
5k views

Is Lightroom overkill for a JPG-oriented workflow?

I am a passionate not a professional, I shoot most of the time in jpg because: I usually don't have the time to process raw raw takes a lot more space (and I feel my D700 jpgs are huge already!) ...
2
votes
1answer
388 views

Help! I have corrupted Jpeg files and I want to get them back to normal!

Ok, so here's what has happened. I was in the middle of uploading the photos from my Sony memory stick (I used two different sony cameras with the same memory stick) of my vacation, onto my computer, ...
1
vote
1answer
291 views

How can I export TIFF images to JPEG with no adjustments, using Lightroom?

I use Lightroom (version 3 now, probably 4 soon) to work with my raw images. When exporting to JPEG, Lightroom applies a number of adjustments, even if I leave all the settings at the default. This ...
8
votes
4answers
3k views

How is the YCbCr color space represented in a JPEG image?

I know that a 24 bit image dedicates 8 bit each for R, G and B. Is it just for RGB color space. In YCbCr color space for a 24 bit JPEG image, how are the bits distributed?
4
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 ...
33
votes
13answers
3k views

What are the pros and cons when shooting in RAW vs JPEG?

In general shooting in RAW format uses a lot more file storage than JPEG. What am I gaining when shooting RAW? Besides file size are there any downsides to shooting RAW?
0
votes
2answers
314 views

Raw versus JPG Images with a DSLR [duplicate]

Possible Duplicate: What are the pros and cons when shooting in raw vs JPEG? For typical family photos, with a Nikon D5100 DSLR, is there any reason to shoot RAW images rather than the ...
2
votes
2answers
3k 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 ...
2
votes
5answers
904 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 ...
2
votes
2answers
384 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 ...
4
votes
3answers
3k 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 ...
3
votes
2answers
3k 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 ...
3
votes
1answer
413 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 ...
6
votes
1answer
589 views

How do I evaluate a camera's JPEG tone curve options when the manufacturer only provides flowery prose?

There aren't many options for RAW development for the Fujifilm's X-Pro 1 because of its unique sensor layout. However, Fujifilm has clearly spent a lot of time working on the in-camera JPEG results, ...
0
votes
2answers
5k views

Why do my sRGB exports from Lightroom look different from RAW files shown in the program even though my monitor can only show sRGB?

I have read tons of docs about color management over the Web, but there is something I can't understand. I have a screen that can only render the RGB color space. It is very well calibrated using ...
2
votes
1answer
546 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 ...
1
vote
3answers
325 views

What is the difference between the different ways to export JPEG files from Photoshop?

Photoshop allows you to save the processed image as JPEG in two ways. Save As and Save for web. I have observed that Save for web gives more options like converting to sRGB etc. I have also observed ...