Effects of IMGBB image size on display sharpness

pontiac1940
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Effects of IMGBB image size on display sharpness Feb 23, 2020 2:57:07 GMT BuckSkin likes this

Quote

Post by pontiac1940 on Feb 23, 2020 2:57:07 GMT

NOTES:
1) This could be moved into one or more other boards.
2) This might not show anything and I might delete it.

This post started as a result of the discussion here.

TB mentioned that some images appear soft when displayed in PSEM. Sepiana also commented. So I took one photo that was originally 6,000 pixels wide. I copied a portion as a square. The original crop portion was 3,300 pixels wide, but for this test I resized it first to 3,000 pixels wide. Then (as shown) I reduced the image size to 2,000 pixels wide, 1,500 pixels wide, 1,000 pixels wide and finally 800 pixels wide. All five images are displayed here. Let's see how they appear before clicking in the images to look at the original sizes in imgbb. Click on each image to see the larger sizes in imgb ... be sure to click the + cursor in the first imgbb images to display the largest size.

Here goes. Pay attention to the small tuft of spines at the peak of the cactus stem "spade."

Not sure what this will show...will likely edit the post after seeing it.

Clive

EDIT COMMENTS
They all look okay without clicking to view the larger imgbb images. As displayed here, the 800 pixel image is not as sharp as the others .. to my eye.
Not sure if this post is useful or not.

Last Edit: Feb 23, 2020 17:19:18 GMT by pontiac1940

Sony A7IV and A7III full-frame mirrorless bodies, Sony FE 200-600mm f/5.6-6.3 G OSS lens, FE 24mm F1.4 GM lens, Sony FE 24-105mm f/4 G OSS, Minolta 100 macro.
Currently using PSE 2023. Also used 2021, 2018, and had PSE 11, 10, 8, 6 and 3; PS LE and full PS.

pontiac1940 CE Members Posts: 6,360 Open to constructive criticism of photos: Yes	Effects of IMGBB image size on display sharpness Feb 23, 2020 3:19:31 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by pontiac1940 on Feb 23, 2020 3:19:31 GMT Perhaps this post does not really show anything worthwhile. Other than perhaps there is no advantage when posting via imgbb to use more than 1,500 pixels wide.
	Sony A7IV and A7III full-frame mirrorless bodies, Sony FE 200-600mm f/5.6-6.3 G OSS lens, FE 24mm F1.4 GM lens, Sony FE 24-105mm f/4 G OSS, Minolta 100 macro. Currently using PSE 2023. Also used 2021, 2018, and had PSE 11, 10, 8, 6 and 3; PS LE and full PS.

kdcintx Senior Contributor Posts: 1,618 Open to constructive criticism of photos: Yes	Effects of IMGBB image size on display sharpness Feb 23, 2020 3:47:53 GMT pontiac1940 likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by kdcintx on Feb 23, 2020 3:47:53 GMT Thank you for this comparison. Not much difference bigger than 1500 pixels.

pontiac1940
CE Members

Posts: 6,360
Open to constructive criticism of photos: Yes

Effects of IMGBB image size on display sharpness Feb 23, 2020 15:32:49 GMT

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Post by pontiac1940 on Feb 23, 2020 15:32:49 GMT

Karen

I loaded all of the imbgg images and toggled between them. There is a slight (very slight) difference between the 1,500 pixel image and the 2,000 pixel image, but I agree with you, there seems to be no real point of posting anything larger then about 1,500 pixels on the long side. And for causal posts (say, Let's play the match game!) images can be smaller. (I am away and using my 17-inch laptop that has a 1920 X 1080 resolution. The 2,000 and 3,000 pixel images both fill the screen width the same in imgbb.)

As noted, Facebook images have to be 2048 pixels on the long side. If I size an image for posting on Facebook, I'd just post it here and not bother to resize it.

Clive

Sony A7IV and A7III full-frame mirrorless bodies, Sony FE 200-600mm f/5.6-6.3 G OSS lens, FE 24mm F1.4 GM lens, Sony FE 24-105mm f/4 G OSS, Minolta 100 macro.
Currently using PSE 2023. Also used 2021, 2018, and had PSE 11, 10, 8, 6 and 3; PS LE and full PS.

BuckSkin
Senior Contributor

Posts: 3,969

Effects of IMGBB image size on display sharpness Sept 16, 2021 18:17:56 GMT

Quote

Post by BuckSkin on Sept 16, 2021 18:17:56 GMT

Feb 23, 2020 3:19:31 GMT pontiac1940 said:

Perhaps this post does not really show anything worthwhile. Other than perhaps there is no advantage when posting via imgbb to use more than 1,500 pixels wide.

It was worthwhile to me !

Elements 7 ~~~ 64-bit Windows 7

On a poverty-level Kentucky budget, a 24-exposure roll of film would have two Christmases and a summer vacation on it and we might have to wait another six months before being able to afford developing the film.
I still have trouble remembering that it doesn't cost anything to take thousands of pictures; it just almost seems impossible to be true.

srmoment Senior Forum Member Posts: 986 Open to constructive criticism of photos: Yes	Effects of IMGBB image size on display sharpness Sept 16, 2021 19:16:47 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by srmoment on Sept 16, 2021 19:16:47 GMT hmmm on my screen, the 800 is not as clear. The sharpest is the 3000, especially if you zoom in. Interesting test!

caspa
Junior Forum Member

Posts: 121
Open to constructive criticism of photos: Yes

Effects of IMGBB image size on display sharpness Sept 17, 2021 0:07:36 GMT Moto likes this

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Post by caspa on Sept 17, 2021 0:07:36 GMT

When you upload a photo to anywhere online you really are at the mercy of the website and viewers' browsers regarding how sharp a photo will appear because of 2 main reasons.

1. Especially with image hosting sites, the sites will most likely create their own downsized thumbnails of your photo to display on the web page. The algorithm used to create these thumbnails will depend on the programming language the website is built in. Not all image resizing algorithms are created equally; some will be better than others.

2. A photo will be displayed according to the CSS styling assigned to an <img> HTML element in the web page. For example, if the CSS styling for the width of an <img> element is set to say 50% then the viewer's browser will resize the image to 50% of whatever the width of the HTML element containing the <img> is. That is why photos automatically resize when you resize the browser window on your computer screen. Here again, some browsers will resize photos better than others.

Also, bear in mind that when you downsize a photo it will tend to look sharper especially when viewed at a distance and not zoomed in.

Photoshop Elements 2020 (including Organizer), Elements+, Premiere Elements 2021, Topaz - Denoise AI, Sharpen AI, Gigapixel AI.

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Effects of IMGBB image size on display sharpness

Post by pontiac1940 on Feb 23, 2020 2:57:07 GMT

Post by pontiac1940 on Feb 23, 2020 3:19:31 GMT

Post by kdcintx on Feb 23, 2020 3:47:53 GMT

Post by pontiac1940 on Feb 23, 2020 15:32:49 GMT

Post by BuckSkin on Sept 16, 2021 18:17:56 GMT

Post by srmoment on Sept 16, 2021 19:16:47 GMT

Post by caspa on Sept 17, 2021 0:07:36 GMT