Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Learning
Computers and Software
PIXEL distortion issue
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="WayneF" data-source="post: 196556" data-attributes="member: 12496"><p>I am not sure what you mean either, and you did mention PNG, but still, I fear your issue may be JPG artifacts. What JPG Quality setting are you selecting when saving a file?</p><p></p><p>Your image here is 960x640, x3 RGB is 176 MB RGB data size. However, your JPG file is only 28.1MB, which is compressed excessively, to be only 28.1/1760 = 1.6% of its original data size. That causes JPG artifacts and poor quality. It would be better quality if the file were at least 8x that size, better if 10x that size. Use a greater JPG Quality factor. A small JPG file is NOT a good thing. Make the file as large as you can. "As small as possible" is wrong headed, counter productive to quality.</p><p></p><p>This loss cannot be fixed now, the damage is done now, and it is NOT repairable, no matter what you do.</p><p></p><p> All you can do is to discard the file, and start over from scratch from the original image from camera, and save it at higher JPG Quality setting... More like JPG Quality 9, or at least 8. High Quality is a good thing. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Also make sure the cameras is set to Large Fine JPG also, the best possible. Or shoot Raw is a solution too.</p><p></p><p>Also check Photoshop menu Edit - Preferences - General, to be sure Image Interpolation is set to Bicubic - Sharper.</p></blockquote><p></p>
[QUOTE="WayneF, post: 196556, member: 12496"] I am not sure what you mean either, and you did mention PNG, but still, I fear your issue may be JPG artifacts. What JPG Quality setting are you selecting when saving a file? Your image here is 960x640, x3 RGB is 176 MB RGB data size. However, your JPG file is only 28.1MB, which is compressed excessively, to be only 28.1/1760 = 1.6% of its original data size. That causes JPG artifacts and poor quality. It would be better quality if the file were at least 8x that size, better if 10x that size. Use a greater JPG Quality factor. A small JPG file is NOT a good thing. Make the file as large as you can. "As small as possible" is wrong headed, counter productive to quality. This loss cannot be fixed now, the damage is done now, and it is NOT repairable, no matter what you do. All you can do is to discard the file, and start over from scratch from the original image from camera, and save it at higher JPG Quality setting... More like JPG Quality 9, or at least 8. High Quality is a good thing. :) Also make sure the cameras is set to Large Fine JPG also, the best possible. Or shoot Raw is a solution too. Also check Photoshop menu Edit - Preferences - General, to be sure Image Interpolation is set to Bicubic - Sharper. [/QUOTE]
Verification
Post reply
Forums
Learning
Computers and Software
PIXEL distortion issue
Top