I am on a windows computer running PS CC version 19.1.8I am enlarging an image that a client saved as a very small jpg to eliminate pixelization.I opened the jpg image in photoshopI converted layer from backgroundDuplicated the layerWith the duplicated layer selected I selected image size, selected Resample > Bicubic SmootherChanged width and height to 200%When I deselected the eye icon on layer 2 I expected to view the original size image. However the layer 1 image is now also doubled in size. Other layer adjustments remain isolated. not image size. am I missing something? I expected to see the original image size with layer 2 deselected.I look forward to your reply

Jim_Palik

Inspiring

Question

Layers not isolating image size changes

Forum|Forum|6 years ago
April 16, 2019
3 replies
1280 views

I am on a windows computer running PS CC version 19.1.8

I am enlarging an image that a client saved as a very small jpg to eliminate pixelization.

I opened the jpg image in photoshop
I converted layer from background
Duplicated the layer
With the duplicated layer selected I selected image size, selected Resample > Bicubic Smoother
Changed width and height to 200%

When I deselected the eye icon on layer 2 I expected to view the original size image. However the layer 1 image is now also doubled in size. Other layer adjustments remain isolated. not image size. am I missing something? I expected to see the original image size with layer 2 deselected.

I look forward to your reply

This topic has been closed for replies.

T

Test Screen Name

Legend

Many of these are just impossible. For example the image mode (8/16/32 bits, RGB/Lab/CMYK) applies to everything. Cropping crops down the entire final result. The things that make sense generally have a way to do this to just a selection, within just a layer.

I'd like to say that everything on the IMAGE menu applies to the whole image, but it isn't that simple. Things like Image > Adjustments are layer specific.

Jim_PalikAuthor

Inspiring

I am finding it fascinating that after so many years I never ran into this issue. what surfaced this today is my client that wants to take a set of images that were saved as very small jpgs and have me enlarge them to eliminate pixelization.

What I want to do is test different techniques for getting the best results. My research had one suggestion that to first enlarge the image by 200%, change the noise to despeckle, enlarge again , diffuse with Antisotropic selected, then reduce by 50% and sharpen with the Sharpen Mask. Normally I would do testing like this in different layers and then selecting and hiding layers to see isolated results. Do you have any ideas on how to replicate this testing method.

Better yet, Is there an official Adobe answer for the best way to enlarge small jpg images.

You guys have been very helpful,

I look forward to your answers

Jim

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D Fosse

Community Expert

Jim_Palik wrote
Better yet, Is there an official Adobe answer for the best way to enlarge small jpg images.

While upsampling is always best avoided, jpeg is particularly ill-suited because of the compression artifacts. So in my opinion the answer is "don't do it at all".

This is an exaggerated example, but it makes the point. Left is zoomed in twice as much to compensate size: