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Questions tagged [jpeg]

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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1answer
590 views

What does it take to get the Selphy to print an edited JPG?

We took a picture with a digital camera, and used GNU Image Manipulation Program (GIMP) to remove some stuff in the background, and tried to print it on our Canon Selphy CP1200. The print failed, and ...
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How can I physically rotate a digital photo under Linux?

I was using gThumb version 3.2.7 for some time and I was particularly happy with option "Rotate Image Physically". Because I don't want to rely on EXIF photo rotation data. Recently I bought better ...
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1answer
179 views

How can I configure Lightroom to use the JPEG from the camera for previewing?

I take photos in both RAW and JPEG. Sometimes I might apply a color style on the JPEG in-camera, but when I import the photos in Lightroom, only the RAW is visible. Can I somehow configure Lightroom,...
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will i lose data/quality converting my raw files to jpeg on my pc? [duplicate]

will converting raw files to jpeg be the same as taking a jpeg photo to begin with? or will I keep my raw quality converting it to jpeg post shoot?
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2answers
3k views

Is it possible to find out what compression ratio was used for a particular JPEG?

I have a couple of JPEGs. Is there a way to find out which compression level was used when encoding them? That is, were they encoded at level 60 or 90? The reason I'm asking is because I have a site ...
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1answer
5k views

Color profile inside JPEG file

1) What is the best practice for color profiles embedded in .JPG images, for web? (non print) sRGB profile stored in .JPG file ? AdobeRGB profile stored in .JPG file ? no profile setting in .JPG file ...
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1answer
145 views

What to do with a jpg too warm? [duplicate]

I accidentally shot in jpg and I have some way too warm photos. What can I do with them?
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2answers
157 views

Batch rename ImageDescription with Pattern for multiple JPEGs

I used IrfanView to rename holiday pictures from my girlfriend and myself to get them in order. I could arrange them and use pattern to add numbers infront of the filenames. The pattern I use for ...
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4answers
27k views

Can I get original JPEG image from CR2 file format? [duplicate]

I am not professional photographer , but i have a professional camera (Canon). I had shoot my pre wedding photos with this camera. So when i was open , it will be converted into black and white after ...
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1answer
1k views

How to compress an image to a particular size in jpeg regardless of quality?

Scenario: I have an android app which captures images and sends over to a server. Till now I had been setting 50% quality. But with high end phones with better sensors and resolutions even with that ...
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1answer
145 views

Will saving in RAW + JPG provide the same IQ result as saving them both separately?

Storage is cheap nowadays, and carrying a few extra SD-cards aint to heavy. Is there a real downside to this option? Besides filling up more memory and some extended loading times? The question is ...
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1answer
173 views

Why is my frame stacked image showing a grid?

The following is an auto-equalised image of 200,000 stacked frames from a small web camera. All the frames are of a very dark grey uniform background, and the histogram mode is about -1.5 stops below ...
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1answer
163 views

Exporting All Metadata When Exporting JPGs & NEFs To Reduced Size JPGs

In Lightroom, when Exporting NEF and JPG files to reduced size JPGs, How do I get all metadata to export as well? Specifically, my exported files don't include Date Taken or Tags.
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I shot using S3 and it's pixelated

I generally shoot L + Raw but this time, I was doing a shoot for a new company and for some reason thought that I could use the "S3" JPEG setting (720x480). They are using them for online. They have ...
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8answers
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If an image is rotated losslessly, why does the file size change?

I was searching for methods of lossless image rotation and happened upon this question which explains it rather nicely: Are "Windows Photo Viewer" rotations lossless? So I created a 256×...
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7answers
769 views

Is a JPG guaranteed to produce the same pixels?

I know there are plenty of benefits to shooting in RAW, but at the moment it seems that JPG works just fine for me. The file sizes are way smaller, and darktable seems to work just fine with them (...
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2answers
71 views

Strange colour in my sky trail photos

I have a D200 and have been trying to take star trails but the photos are red on the corners of the photo. Do you have a simple answer that I am doing something wrong. I had it set for 2 hours.
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Does converting image file formats affect quality?

Does converting image formats, such as from JPG to PNG, have any effect on image quality? I know converting from RAW to JPG has disadvantages, but what about other format conversions?
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1answer
467 views

Maximum jpeg conversion size from a 24 Meg Nef File

Can you tell me how big a JPEG file I can create when converting a NEF file in Lightroom?
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1answer
174 views

RAW processing steps [duplicate]

I'm novice in RAW processing. I know what a RAW file actually is but what are typical steps I need to do for RAW processing and getting output JPG file manually? Update: I want to get advices what ...
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2answers
135 views

16-bit wysiwyg image? Not RAW [duplicate]

I like the dynamic range of RAW files, but I don't want raw sensor data, but I don't want 8-bit jpegs. What can I do to get the desired result? Request camera manufacturers to allow TIFF file ...
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2answers
180 views

Create versions of originals and export as JPEGS with metadata?

I have a library of 20,000+ JPG images and I've now decided it is time to clean up the collection: sort, edit, crop, straighten, delete etc. So I have a few questions: By editing a JPG and exporting ...
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5answers
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How can I get my JPEG images to look the same in print as they are on screen?

Recently I took a landscape picture and had it printed in a photolab as I wanted to sell it. It was taken at sunset and although not the brightest lit picture it was still lit well enough to make for ...
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1answer
601 views

Quality of image changes drastically after saving as jpg (choosing max quality) from raw

Why does quality of my image changes drastically after editing it (and saving it as jpg with maximum quality ) in photoshop CC RAW. Everything looks great until I save the image. Comparison of the ...
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2answers
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Podcast Cover Art Help! [closed]

My Photographer Shot in Raw with 885 × 1024 dimensions. I need this for a podcast cover at 1,400 x 1400 pixels -3,000 x 3000. Please help?
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4answers
505 views

What makes RAW formats better for manipulation than JPEGs or PNGs [duplicate]

So I've seen everyone saying that RAW format is much better for manipulation in photo editing applications like Lightroom than JPEGs or PNGs. While I read some posts here like this and this, I'm ...
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3answers
1k views

Quality of JPEG directly from RAW+JPEG versus JPEG embedded in RAW of RAW+JPEG?

When I use ImageMagick's identify command to look at the quality of the JPEG from my camera's RAW+JPEG mode, I see 95. When I use the same to look at the JPEG preview that has been directly extracted ...
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3answers
823 views

Recover broken images that are corrupt

I had some issues with my computer and sent it out for repairs to a reputable dealer. So far everything came back perfect. I sent it in to be cleaned up and to try and recover some photos that were ...
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1answer
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How to recover original thumbnail of an edited image?

I would like to know if it is possible to recover the original version of an edited picture. The metadata of the picture in question indicates . "Hasthumbnail : False". So how is it possible to ...
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3answers
794 views

How do I compress my TIFF files to JPEGs of a given size?

An online lab wants my large (over 100 MB) TIFF files as 50 MB JPEGs with a maximum of 80 megapixels for making aluminum 16x24 inch prints. What about final resolution? How do I convert from one to ...
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8answers
35k 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 ...
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1answer
2k views

How can I view .ctg files 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.
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1answer
8k 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?
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1answer
922 views

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

This is a follow up to a question asked on askubuntu: https://askubuntu.com/questions/708759/color-adjustment-for-100-jpg-files-fast-workflow-for-savenext I want to do manual color adjustment for 100 ...
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1answer
917 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 ...
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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 ...
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2answers
348 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 ...
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2answers
589 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 ...
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4answers
1k 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 ...
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1answer
527 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 ...
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1answer
578 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 - ...
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2answers
398 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 ...
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2answers
763 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 ...
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1answer
151 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, ...
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1answer
1k 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 ...
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1answer
499 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 ...
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2answers
191 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 ...
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3answers
8k 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 ...
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2answers
505 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 ...
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2answers
212 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 (like DNG, ARW, PNG) and edited photos exported in a chosen format, like JPEG. Is there ...