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.
325
questions
0
votes
0
answers
27
views
Breaking down the format of the "Y Cb Cr Sub Sampling" EXIF tag
When using exiftool to inspect various images, I've seen lots of different values for the Y Cb Cr Sub Sampling tag. A few ...
- 101
1
vote
0
answers
57
views
How to use JPG embedded in RAW for color calibration in darktable
My camera (Canon EOS R5) does a great job with colors for the embedded JPG, but I am unable to achieve similar colors (mainly skin tones) when processing the RAW version of the image in darktable.
I ...
- 111
0
votes
1
answer
71
views
How best to convert PNG to WebP
I have 900 large, proprietary, multi-coloured PNG images of different sizes scanned @ 600 PPI ranging from 10MB to 50MB. The scans (ie photos) are of prints. The average size is 35MB. They all have a ...
4
votes
2
answers
767
views
Something is corrupting my jpegs. How can I trace what did this?
I keep finding jpeg images on my laptop, which are corrupt. Some have a gray band at the bottom, some are reported bad by Bad Peggy (but look normal when viewed in e.g. XNView) and some are just ...
- 111
0
votes
4
answers
93
views
Metering Mode Doesn't Effect RAW Files? What About The JPEG Preview?
[Sony A7R5]
Ok, this is more about confirming what I think is true.
I know that the metering mode doesn't make a difference to the RAW files when I'm shooting in manual because I'm setting ISO, ...
- 181
1
vote
3
answers
67
views
Auto (or manual) renaming of various JPG files
Part 1.
I have two camera sources.
1 Mobile which produces IMG_20180618_035708.jpg files
2.Panasonic Lx7 which outputs P1910846.jpg
So, I would like to be able to bulk rename the P1910846.jpg to ...
- 11
0
votes
2
answers
181
views
Which JPG has better quality? And which Exif Byte Order is better?
I have two folders of "the same" JPG images that I made over 10 years ago, when I was a kid, but the size of photos in one folder is different than the other.
The photos were made on my old ...
- 103
1
vote
2
answers
70
views
Apple Preview vs. GIMP, Photoshop, Bridge etc. as PNG/TIFF to JPEG converter
I have a bunch of PNG and TIFF files—scans of old family photos and documents. I will keep them as archival masters, but for the purpose of online sharing I am creating JPEG's from these files. The ...
- 282
0
votes
2
answers
46
views
propritery SANYO metadata
How does an old SANYO camera store proprietary metadata on JPG that are not part of the Exif section? Like if the photo has the correct date or if it was taken using the hand or smile detection or ...
9
votes
1
answer
5k
views
Two EXACTLY the same .jpg images with one image more than twice the file size of the other - Why? (PART 2)
So I have 2 JPEG files at 2000x2000 pixels, that I made out of Photoshop: (wetransfer_2-jpg_2023-04-26_2146.zip)
File_1) I saved directly from an RGB TIFF with "save as" JPEG quality 9 -- ...
- 93
0
votes
0
answers
92
views
JPEG vs RAW - how big is the difference [duplicate]
I've read some of the questions and answers on here but they are all years old. (some of them over 10 years ago)
In this day and age, is there still a significant difference in quality of the image ...
- 101
1
vote
2
answers
144
views
How to recover and load XMP from exported JPEG in darktable?
I've lost a XMP file for the edit, which I very much like...
Luckily, I've got the RAW for the photo and the exported JPEG for the edit. And, digiKam is showing a tab with XMP profile (for the JPEG of ...
- 123
0
votes
1
answer
80
views
Why has my tiff file converted to jpeg and shrunk to almost nothing [closed]
i recently had a photograph of my art taken by a photography studio and the file size was huge, over 100mb. Here are the details of that
I then cropped the image myself so it could be used for ...
0
votes
1
answer
87
views
Why is this jpg 0 bytes and websites often can't upload it? [closed]
I have a certain cellphone with a Gallery app that makes so-called 0 byte files. In fact the file you're looking at is one of them. So maybe somebody could tell me what's the matter with the format?
...
- 101
1
vote
2
answers
117
views
How can put 2 jpg images side by side in a new jpg without losing metadata or image quality?
I have lots of photos with writing on the back. I've scanned the fronts and backs into jpgs, and now I want to create a single jpg for each front/back pair. The front and back images should go side by ...
- 194
1
vote
3
answers
232
views
How to distinguish a photo from camera and an image from Paint/Photoshop?
Is there a way to identify if an image (ex: .jpg) was taken with a camera (either from a phone or some other source) and not fabricated artificially with some tool like Paint or Photoshop?
I give you ...
- 121
-2
votes
2
answers
87
views
date in the picture can you check that the sotała has changed?
I would like to check if the date in the photo has been changed, if someone can do it.I can't find much on the internet about it.
0
votes
2
answers
199
views
Does JPEG compression reduce actual image size?
In this article it says "Generally speaking, the algorithm behind this format makes some trade-offs to lower the image size."
Just wanted to check that this is referring to image file size, ...
- 23
1
vote
3
answers
810
views
Suspect photograph timestamp data has been altered
I received photographs over email from a client which I suspect were taken in 2022 but the client insists are from 2021.
I looked at the metadata, filenames, and date modified timestamps to look for ...
- 111
1
vote
3
answers
105
views
How to separate the RGB colour space to only N colours?
In a JPEG image, we may have thousands of distinct RGB values.
What is the process called of translating these numerous RGB values to just N distinct colour names/values?
(I'd like to know the name ...
- 111
1
vote
1
answer
75
views
Leica Q2M JPG files cannot be read by any of my Ubuntu (21.10) image software
I very recently picked up a Leica Q2M, and on my first attempt to read JPG files recorded on its storage media I've found that nothing on my Ubuntu 21.10 installation can read the files. I've tried <...
- 187
2
votes
4
answers
284
views
Is jpeg or png the standard for fine art photography?
Is jpeg the predominant file format for fine art digital photographs, or what advantages would png have quality-wise that jpeg doesn't for photography, given that it takes up much more hard drive ...
- 584
1
vote
3
answers
524
views
RAW to JPG conversion with reasonable automation
I'm new to working with raw images, since the Lumix TZ101 is my first camera which can output raw image files, and I'm struggling to make good use of them. I'm quite satisfied when I'm manually ...
- 111
0
votes
1
answer
246
views
Jpg thumbnail showing larger than the original picture
I recently downloaded a picture from LinkedIn, and something really weird happens with it. Let me just state before that I can't show you the author asked me don't show it.
So, if I do "read ...
- 3
0
votes
1
answer
325
views
Why is JPEG the only compressed image choice in most digital cameras? [duplicate]
I've been viewing, editing, and storing digital images since before digital cameras were common -- I've used GIF, JPEG, TIFF, PNG, and a few other now-obsolete formats.
GIF has been mainly relegated ...
- 7,102
1
vote
1
answer
272
views
Corrupted Date Taken
Some of my older images are showing Date Taken later than the actual date that the camera took the image.
The EXIF data shows the correct Date Taken in the field APP12::PictureInfo\TimeDate\...
- 111
2
votes
4
answers
334
views
Does ETTR ( Exposing to the Right ) provide any benefit while shooting in JPG ? Or is it only beneficial when shooting RAW?
I generally only shoot RAW when shooting in tricky light situations. Otherwise i shoot JPEG . Should i be doing ETTR for the JPEG shooting as well ? Or is it only a technique that is useful when ...
- 790
0
votes
1
answer
173
views
Image artefacts when exporting RAW to JPEG [duplicate]
I have a bunch of pictures in RAW format (.CR2) taken with a Canon EOS 1100D.
When I view these files using Windows Photos app the images look great, however when exporting to JPEG using RawTherapee ...
11
votes
7
answers
9k
views
Two EXACTLY the same .jpg images with one image more than twice the file size of the other - Why?
I have a number of .jpg images which are EXACTLY (dpi, frame size, image) the same - except one is more than double the file size (in bytes) of the other. How can this be? When I zoom in by say 700% ...
- 135
1
vote
2
answers
1k
views
ExifTool does not extract corrupted EXIF metadata from jpeg file. How to repair it?
The image viewer nomacs offers a quick way to add image notes via Exif.Image.ImageDescription metadata.
After having edited the form for ...
- 43
2
votes
3
answers
260
views
What's the best format for pictures in order to have the most metadata?
Working with a smartphone, I've seen that JPEG shows a lot of information in the EXIF, where PNG not as much. However JPEG does some compression on the image which I'd like to avoid if not necessary ...
0
votes
0
answers
28
views
How to delete all metadata from all JPEG files in folder using ImageMagick? [duplicate]
I have many JPEG files in folder D:\folder. I want to delete all metadata from all JPEG files in this folder. I used ImageMagick. I made:
...
- 85
1
vote
1
answer
213
views
Photo noise level in RAW format [duplicate]
Why is the noise level of raw photos higher than jpeg photos?
I have encountered this issue several times.
- 71
3
votes
2
answers
1k
views
2
votes
3
answers
2k
views
Suggestions for an easy way to add gps data to jpegs
I am looking for an easy way to add locate and add GPS data to JPG files on a Mac running OS Catalina.
I would like the photo data to be able to be recognized in iPhone picture maps and location ...
- 131
5
votes
2
answers
281
views
Is there a common subset of exif metadata tags for scanned photographs?
I've recently been scanning a collection of photographs into jpeg files.
I know how to use tools such as exiftool to examine and change metadata tags.
But while I'm ...
- 365
1
vote
4
answers
477
views
What is the usefulness and best conversion software of TIFF file format for scanned slides
I will use an external provider to scan 1000+ old slides ("diapositives"), mostly family snapshots made a few decades ago. The provider offers by default standard definition jpg (512 x 340 ...
- 113
0
votes
2
answers
138
views
Finding raw & jpeg files in my computer photos library
I have a Panasonic FZ1000 and took some photos on the raw & jpeg setting. On my computer the photos are identified as jpeg, but on my iPad they are identified as both. There is only one file ...
- 1
1
vote
2
answers
157
views
Capture one to export a progressive jpeg?
As far as I can tell, Capture One doesn't have the option to export an image as a progressive jpeg. To get a progressive image, I've been compressing once on export, and compressing again on the ...
- 317
1
vote
2
answers
223
views
Can jpg be converted to progressive jpg without quality loss?
My understanding of a progressive jpg is that it saves the color information of each pixel in a different order, to create the progressive loading effect. I.e. instead of ...
- 317
1
vote
2
answers
109
views
How will the image be displayed/interpreted if I publish a JPEG online with no embedded color profile?
How will the image be displayed/interpreted if I publish a JPEG online with no embedded color profile?
I use GIMP 2.10 on Windows 10 Home 64-bit.
- 85
5
votes
4
answers
2k
views
Is there a way to delete all RAW files if a corresponding JPG file exists?
I'm starting the process of importing hundreds of thousands of photos into a new DAM system that my company purchased. There are 46,000 RAW files (mostly .cr2).
We don't need the RAW files anymore. ...
- 51
0
votes
1
answer
624
views
.jpg photos from the external SD card of Galaxy Grand Prime + display "It appears we don't support this file format" after transferring them to my PC
My Galaxy Grand Prime + phone was running out of space so I transferred all my WhatsApp media to my SD card. After some time (a few hours I think), many of these photos and videos became unviewable. I ...
- 101
1
vote
1
answer
289
views
Why are thumbnails bad, when jpgs are good, with raw processed with darktable?
I'm using darktable to process my raw photos and save the final jpg's. I'm on ubuntu linux.
From some of the jpg's, gthumb gets thumbnails which are far lighter than the original jpg, and the same ...
- 113
1
vote
1
answer
142
views
Different image viewer shows different color (brightness?) of jpg image
I'm not sure if I should ask this question here or not. I've some images, that have a problem, as the screenshot below shows:
The softwares are as following (left to right, top to bottom):
[qimgv] [...
- 113
6
votes
1
answer
244
views
Why is the night sky photo showing uneven color and strange pattern in background?
Here's straight-out-of-camera JPEG I've shot with Fujifilm XT-2 with following details:
f/2.8
15 seconds
ISO 3200
XF 16mm f/2.8 R WR
Upon closer inspection I noticed:
Left area is noisy possibly ...
- 163
2
votes
2
answers
215
views
Edit in RAW not as good as the Jpeg
I take most of my pictures on mobile, and I use mostly jpeg for the convenience, but I sometimes use RAW because of annoying whites blowout, bizarre clouds or unreal colors. For instance, my sunset ...
3
votes
4
answers
754
views
GIMP: Why can I set a higher quality than original image in the "Export Image as JPEG" dialog?
After having read the GIMP Export Image as JPEG section, I still have one understanding issue:
Why am I able to select a higher quality value than the one from original image in the export dialog?
For ...
- 133
0
votes
1
answer
405
views
Does a TIFF file using JPEG compression have the same 65535 x 65535 pixel limitation as a JPEG file?
TIFF allows for JPEG compression, among others. While it is not a well-explored option (most people just opt for lossless compression), I am looking to use it as a similar-size alternative to JPEG, ...
- 67
1
vote
1
answer
189
views
Why does zooming into JPEG images show chunky boundaries and or noise resembling smudges of magenta, yellow and cyan?
What causes this effect? The boundaries look chunky and weird. I never seen this on PNG.
I also have noticed this for JPEG images only, not PNG. For example these captcha images. The skies don't ...
user92812
Hot Network Questions
- What benefit is there to obfuscate the geometry with algebra?
- Remove the element from array where order matters?
- During a total solar eclipse is it possible to see solar flares with the naked eye?
- Is it harmful to keep 12V accessory on ignition start?
- Do you win a Numeric Mahjong?
- Represent data as a table with diagonally split color-coded cells
- Could 99942 Apophis break up due to Earth's gravity during 2029 flyby?
- A Trivial Pursuit #12 (Sports and Leisure 2/4): Logic Boat
- Is there an infinite chain of endofunctors of finite sets?
- What's the most recent version of AmigaOS?
- Flaps Cessna 172 breaker tripping
- PS3 doesn't boot with original hard drive after hard drive swap
- What does THAT mean here?
- Yet another shared_ptr implementation for learning purposes
- What led physics to "anticipate" the tau particle?
- Are some congruence subgroups better than others?
- Trouble identifying the subject in a long sentence
- Can the Faerie Fire spell be oriented in a small space to not affect allies?
- 9 year old ATA red belt got beat at tournament
- Why we use vector sum to calculate net potential in AC circuits?
- How to have app names be spoken aloud on a new notification?
- Where is this image of Vader from?
- How did Jesus figure out he is God?
- Gimp and Inkscape on Android: licensing (GPL?)