All Questions
Tagged with jpeg image-quality
33 questions
0
votes
2
answers
920
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
0
votes
1
answer
371
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 ...
1
vote
2
answers
354
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 ...
- 307
2
votes
1
answer
2k
views
Why do JPEG and TIFF versions of image look different?
I noticed something that probably is good but looks bad in my opinion.
I pixel peeped an image to compare the Jpeg vs Tiff. Both are exported with Lightroom from a raw file. I only changed the file ...
- 522
2
votes
2
answers
2k
views
Is editing metadata of a JPEG destructive to the image?
Is editing metadata of a JPEG destructive to the image? If I edit "File Info" > "Description" in Photoshop, then save.... am I causing the same image degradation as if I edited the image, then re save ...
2
votes
2
answers
1k
views
How to batch convert old NEF photos to JPEG/HEIF with in-camera processing look?
I have ~9k NEF photos from a Nikon D5000 that are currently taking up ~100GB. It's been 8+ years without me touching them, so I don't see a reason to assume I will ever process and edit them.
I'd ...
user87651
1
vote
2
answers
370
views
How to determine which jpeg is closer to the original image and has the most information?
I've got two jpegs of the same photo of different sizes and attributes. How can I tell if one is the original taken by an iPhone4 or if neither is the original, determine which has the most ...
- 1,715
4
votes
5
answers
8k
views
How do you identify file type/compression in a TIFF file?
From what I understand TIFF is like the .mkv container for photography - it supports a variety of compressed and uncompressed formats.
But how would you go about checking if the data within the TIFF ...
- 67
11
votes
8
answers
34k
views
What is the "optimal" file size of JPEG images with respect to their dimensions?
I plan to write a script that will scan 100,000+ JPEG images and re-compress them if they are "too big" in terms of file size. Scripting is the easy part, but I am not sure how to categorize an image ...
- 249
2
votes
3
answers
863
views
Assuming no editing, what's the difference between in-camera jpegs and lightroom jpegs? [duplicate]
I have a Canon 6D. I usually shoot RAW + JPEG. I shoot RAW so I have the option to edit, but I don't actually edit most of my pictures.
I've noticed that if I just import into Lightroom and export ...
- 123
4
votes
2
answers
3k
views
Why are JPEG images from camera huge and the same images exported from Vistaprint software 10 times smaller?
JPEG images from my Nikon D3300 are roughly 12-15MB big at 6000 x 4000resolution.
RAW ...
- 153
0
votes
2
answers
677
views
Trying to understand losses in jpg compression
I have a bunch of jpegs taken with a Nikon D3200 at 6016 x 4000. They weigh between 9M and 12M each.
To try and reduce space a bit, I compressed copies with the default Windows utility, and the new ...
- 117
0
votes
4
answers
15k
views
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?
- 17
0
votes
2
answers
2k
views
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 ...
- 1
41
votes
8
answers
20k
views
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×...
- 553
7
votes
2
answers
8k
views
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?
- 173
6
votes
1
answer
2k
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 ...
- 323
2
votes
2
answers
248
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 ...
- 21
10
votes
5
answers
4k
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 ...
- 361
6
votes
2
answers
5k
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 ...
- 553
26
votes
12
answers
45k
views
Does simply opening and closing a JPEG file decrease image quality?
I've had quite a few photography classes, read many photography books, and screened many forums. And I can't find a consistent answer to this question. One "camp" says there is a loss of image quality ...
- 1,193
2
votes
3
answers
26k
views
How to preserve image quality when exporting psd file to jpeg?
my psd file is 9900px by 6600px and I want to export it to jpeg for a website. When I try to export it to jpeg with 72ppi and lower down pixel dimensions to about 1000px by 750px, the image comes out ...
- 23
8
votes
3
answers
3k
views
Make photos on Facebook nicer?
I upload photos to my Facebook page using the latest Lightroom. I'm wondering if there are some tips or tricks, or maybe hidden options on Facebook that makes the images served to the viewers higher ...
1
vote
2
answers
4k
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 ...
- 377
1
vote
1
answer
486
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 ...
- 107
4
votes
4
answers
30k
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 ...
- 143
2
votes
3
answers
9k
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 ...
- 147
2
votes
2
answers
617
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 ...
- 121
4
votes
3
answers
5k
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 ...
- 333
2
votes
1
answer
2k
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 ...
11
votes
2
answers
6k
views
Is it worth using Pentax's 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 ...
- 5,946
27
votes
6
answers
48k
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 ...
- 144k
7
votes
4
answers
2k
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 ...
- 229
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