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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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7
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5answers
2k views

How to convert JPEG to RAW in Photoshop or similar?

I am having a competition in which I have to submit images in RAW format. But I have already clicked some images with Nikon D3200 in JPEG.Is there any way to convert JPEG to RAW format in Photoshop or ...
1
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1answer
62 views

How I can view the image taken from my Canon camera?

How can I see the images taken from my Canon camera. All files are converted into CTG and I could not open either in the camera nor on the PC.
1
vote
1answer
74 views

What's the difference between Raw Vs Raw+L mode?

Whats the difference between raw mode and raw+L mode on a digital camera? Which is best for commercial photography?
2
votes
1answer
57 views

How can I load, edit, and overwrite jpg files with Darktable?

This is a follow up to a question asked on askubuntu: http://askubuntu.com/questions/708759/color-adjustment-for-100-jpg-files-fast-workflow-for-savenext I want to do manual color adjustment for 100 ...
0
votes
0answers
86 views

Why are images exported from Lightroom 6 different from the preview?

I currently have Dell U2711 monitor with Dell U2711 ICC profile (Adobe RGB preset mode) Windows 10 Adobe Lightroom 6 CC Image from Fujifilm X100 in both RAW (RAF) and JPEG Done very little else to ...
16
votes
2answers
2k views

Software that guesses which algorithm saved a given JPEG

Some time ago, I found a piece of software that would provide a good guess on the software/algorithm used to save a JPEG. If I recall correctly, it would analyze something like the compression ...
5
votes
2answers
84 views

In Lightroom, where are the equivalents of the “Comments” and “Subject” tags from Windows File Explorer?

I wrote some info on a couple JPEGs using Windows File Explorer. In Explorer, I wrote info on the "Comments" and the "Subject" tags. However, when I import the JPEGs into Adobe Lightroom, I can't find ...
1
vote
2answers
368 views

Why doesn't PNG show more detail than JPEG in a converted NASA image?

I have a really limited knowledge of photography, so, bearing that in mind, here is my problem. I downloaded an IMG file with a separate label file from NASA PDS because I wanted to visualise the ...
1
vote
4answers
206 views

Why does raw to jpg conversion differ in different editors?

I just started using RAW files (to be more correct I set my camera to RAW+JPG). Then I opened the raw file in RawTherapee and without doing any changes I exported it in jpg next to the jpg file ...
4
votes
1answer
154 views

Any reason not to set ALL photos to “300dpi”? [duplicate]

I run a site where multiple photographers upload and sell their photos to my users. Some of them just want to buy a JPEG, some of them want to buy a JPEG to print. You and I both know that a ...
1
vote
1answer
72 views

Cause of exiftool error (minor: PreviewImage) and should I be worried?

While sorting my images with exiftool "-directory<EXIF:DateTimeOriginal" -d %Y%m%d -ext jpg . for some of .JPGs exiftool reported an error Warning: [minor] Error reading PreviewImage from file ...
4
votes
2answers
87 views

What's the perfectionist's workflow for taking a photograph from capture to print?

I'm interested in perfecting the 100% ideal method of doing things, keeping the color tones and quality through capturing to the printing and publishing. This isn't about handling the camera or doing ...
3
votes
2answers
99 views

How to remove EXIF person tags created by Picasa?

I have many photos spread across several folders. Many photos contain EXIF person tags created by Picasa. How can I remove these tags? http://exiftool.sourceforge.net seems to be capable of doing the ...
0
votes
1answer
72 views

Corrupt jpeg will not open [duplicate]

I have a Maxtor external hard drive which I store many photos on in the camera's raw format and also the converted jpegs. I have the photos broken down into several folders on the drive. Recently, ...
3
votes
1answer
229 views

Does writing EXIF tags influence jpeg quality?

If I understand well then the EXIF data is written in an extra space of the JPEG file. When I add or modify an EXIF tag does this leave the picture untouched? I searched for this and I was not able to ...
3
votes
1answer
159 views

Lightroom: how to import GPS location when adding DNG after JPG?

I do have the following problem: I imported many pics as JPG files, which contain GPS metadata and created collections etc. Now I added the corresponding DNG files so that Lightroom merges them. The ...
1
vote
2answers
99 views

Does it make sense to use a RAW converter program on a compressed image?

I read so far about RAW converter programs. I downloaded LightZone for Linux, but have not used it yet. When people write about raw converter programs they mention the raw format of a picture, and ...
6
votes
3answers
1k views

Can I do “back conversion” of a B&W JPEG to color?

I have a black and white JPEG. It is in fact an RGB image, which means that the color is still there. And I know from past experience that when I shoot B&W with my Canon, the color image is still ...
0
votes
2answers
108 views

Lossless modification of JPEGs according to XMP metadata

I have a bunch of photos in JPEGs (not in RAW or any other lossless format). I turned on the option "Include Develop settings in metadata inside JPEG" in Lightroom. If I understand it correctly, it ...
0
votes
0answers
59 views

Is there an easy way to export photos from Lightroom in original format if they're unedited?

When I export a folder or collection from Lightroom, I want unedited photos exported in their original format, and edited photos exported in a chosen format, like JPEG. This is avoid ...
5
votes
3answers
210 views

Is there a way to set white balance of a RAW to match the preview JPEG?

When I view ARWs in Lightroom, I sometimes find the white balance of the embedded preview JPEG to be perfect, so I'd like to apply it to the RAW. How do that I do that in LR or other (free) software? ...
-4
votes
1answer
138 views

How do I reduce the file size of a jpeg image? [duplicate]

I have a photo in jpeg format that I am unable to reduce from 110 KB to 45kb. What software can do this?
10
votes
3answers
973 views

Is there a lossy compressed file format for 16-bit dynamic range images?

I'd like to aggressively compress some scientific 16-bit grayscale image files, but without reducing the dynamic range. Is such a thing possible? I understand that JPEG format uses lossy, and ...
0
votes
2answers
121 views

Will resizing JPEGs result in a compromise in my image?

I have several images for print, and only after deleting the original RAW files did I remember I needed to resize the images for print. Will resizing JPEGs result in a compromise in my image? They ...
0
votes
2answers
133 views

Is a RAW-only camera economically justified? [closed]

Is a digital camera which could only take RAW images economically justified? considering that RAW files may need less in-camera processing.
2
votes
0answers
60 views

How to save my album as JPEG on Kodak Digi Album Pro?

Objective: Save my album as JPEG on Kodak Digi Album Pro. I am using Kodak Digi Album pro and I'm new to this tool. This program generates a .PAB and .KPL file format, but I want my images to be ...
1
vote
2answers
106 views

In Photoshop Elements, how much is image quality reduced if I re-save a previously saved “small” JPEG as a “large” JPEG?

Back story: I took a picture of a flower in RAW. Pulled it into ACR in PSE 12, moved it to the Photoshop Elements editor, made a few edits, then saved it as a "small" JPEG. When saving a pic in PSE, ...
1
vote
3answers
173 views

Should I save scanned images of 35mm slides from a Nikon scanner in JPEG or Tiff?

I am scanning 35mm color slides, some 50 years old, with a Nikon scanner. Should I save the scanned image in jpeg or tiff format for saving on archival CDs?
0
votes
0answers
124 views

How do I force Lightroom to build previews from sidecar JPEGs?

I often need to sync my Lightroom catalog with another photographer, and to speed up this workflow, I sync only .lrcat and previews.lrdata files. If previews are big enough, there is no problem to ...
0
votes
0answers
195 views

Is exiftran still needed today for resetting the orientation of JPEG images?

Since more then ten years I use exiftran to rotate images after getting them from the camera. Is this step still needed today? Don't browsers and other image apps rotate the image correctly without ...
1
vote
1answer
243 views

What is the practical purpose of “use raw as original” in Photos for OS X?

Within OS X Photos app, when I shoot jpeg/raw and upload to Photos, I get an image representing both files. By default I am looking at the jpeg. Or I can choose a command "Use Raw as Original". I ...
0
votes
2answers
90 views

Why is my Sony A57 creating low res JPGs?

I have used a Sony A57 since they became available. I always have the resolution set for 16M and FINE for JPEGs. I just took an important set of photos that were intended for large blow-ups. But ...
1
vote
1answer
72 views

Is it possible to save the ISO, aperture, and other settings along with the image? [duplicate]

Is it possible to have the ISO, Aperture, and other setting save with the JPEG or RAW image when taking photos? I have the Canon T5i, and I'm fairly new to photography. I can keep a log book with ...
2
votes
2answers
554 views

Why doesn't my camera produce usable EXIF data with a Samyang 8mm fisheye lens?

I am using a Sony nex-5 camera with a manual Samyang 8mm fish-eye lens for panoramic photography. The image stitching application (Panotour 2.3) does not recognize the Exif data. How can I force ...
3
votes
2answers
715 views

How to save JPEGs from GIMP 2.8 and higher?

At present I am learning GIMP 2.8 after getting the advice from this website to edit the photos captured by my Nokia N8. The problem is: I do not know how to save them in JPEG format in GIMP because ...
5
votes
3answers
272 views

Which has a faster write time: RAW or JPEG?

My question is about the write times of the RAW and JPEG file formats. A RAW file is larger than a JPEG and needs more time to write to the memory but it does not need to spend time on data ...
2
votes
1answer
194 views

Batch change CMYK JPG into YCbCr JPG?

I recently got a bunch of JPG photos but all are looking very strange colour wise – almost like colour negatives! My photo viewing program is saying they are all CMYK format but other ones ...
2
votes
4answers
348 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) ...
1
vote
1answer
451 views

How can I target a specific size in megabytes when saving a JPEG in Photoshop?

I need to save several files as 20mb jpgs. When I save an image in Photoshop CS5 at 20mb, then go to that saved file in my folder, it shows as a much smaller file. Is there a formula for hitting that ...
20
votes
5answers
6k views

How can I add a border to a JPEG photo without affecting quality?

I have a photo in JPEG format with resolution 4680x3120. I want to add a white border around this photo, turning it into a 5200x3467 photo (for printing reasons). Clearly, I am not altering or ...
0
votes
3answers
153 views

Is it possible to do non-destructive JPG color correction?

I would like to perform color correction on my photos before printing so that my workflow will create reproducible prints. (i.e. the lab corrects my photos and I print them again later, they may be ...
2
votes
3answers
265 views

What is the best practice for batch compressing jpeg files?

This is fairly theoretical, as it is definitely in the realm of "pixel peeping" and is more or less irrelevant for practical use, but with the increasing popularity of full-width images on websites, ...
3
votes
2answers
365 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 ...
2
votes
1answer
2k 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
votes
3answers
650 views

Best program to batch compress JPGs with minimal loss?

My photo catalog is getting bigger and bigger. It's mainly my fault because in my noob years I used to export all JPGs with a 100% quality, point at which files can reach the 10mb mark or even more. I ...
5
votes
2answers
476 views

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 ...
6
votes
2answers
337 views

How does the usual jpeg 0-100 quality settings translate into Photoshop's 0-12 quality setting?

JPEG encoders usually use a quality setting of 0-100, whereas Adobe photo software uses a 0-12 setting. Does anyone know how to convert between these? (I am actually not clear on whether the 0-100 ...
-3
votes
3answers
93 views

JPEG image problem [closed]

So my problem is with one of the Jpeg's I am working with. The things with Jpegs is that if you change even the slightest part of its HEX file, the whole image just gets screwed up. I zeroed out about ...
16
votes
10answers
4k views

Why use JPEG instead of RAW?

Why would a photographer want to capture images using the JPEG format over an available RAW format? The obvious argument is memory card storage, but assume that my available memory card storage is ...
2
votes
1answer
218 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 ...