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Image Quality of Uploaded Photos #5408111 04/19/20 07:09 PM
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The Critic Offline OP
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Not sure if this thread should be here or in a different section, please feel free to move...

I have seen several threads lately where the poster has uploaded photos using the board's software and the image quality is excellent. This is one example:
https://www.bobistheoilguy.com/foru...e-head-gasket-on-my-2012-ct200h-tomorrow

Here are some threads that I have posted recently and the image quality seems to be drastically reduced from the original photo:

https://www.bobistheoilguy.com/foru...walt-dxcm251-25-gal-oiled-air-compressor
https://www.bobistheoilguy.com/foru...ck-headlight-clearcoat-rupes-uno-protect

Any idea on what is happening? I am using an iPhone 11 Pro Max and I simply upload the photos directly onto the webpage (from my phone).

Thank you.


2011 Toyota Prius 1.8L - 207K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 146K - Valvoline Premium Blue Restore 10W-30
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408115 04/19/20 07:13 PM
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ZeeOSix Offline
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The board seems to "resize" the photo (which decreases sharpness) depending on it's original size when uploaded. I don't think the board will allow a 5 GB photo remain 5 GB when uploaded.

Re: Image Quality of Uploaded Photos [Re: ZeeOSix] #5408119 04/19/20 07:16 PM
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The Critic Offline OP
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Originally Posted by ZeeOSix
The board seems to "resize" the photo (which decreases sharpness) depending on it's original size when uploaded. I don't think the board will allow a 5 GB photo remain 5 GB when uploaded.

Makes sense. Does anyone know the "optimal size" of an uploaded photo so that it would not be subjected to an automatic resize?


2011 Toyota Prius 1.8L - 207K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 146K - Valvoline Premium Blue Restore 10W-30
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408129 04/19/20 07:24 PM
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Quattro Pete Offline
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Try 768x512 max.

EDIT: Nope, nevermind. Even that still gets further compressed. This is one reason why I use an external image hosting provider.



2002 530i   2015 Q5 3.0T   2018 Charger SRT
Re: Image Quality of Uploaded Photos [Re: Quattro Pete] #5408136 04/19/20 07:33 PM
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The Critic Offline OP
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Originally Posted by Quattro Pete
Try 768x512 max.

EDIT: Nope, nevermind. Even that still gets further compressed. This is one reason why I use an external image hosting provider.


Looks like the photos in the HG thread are at 1024x768. My photos were being resized to 576X768.


2011 Toyota Prius 1.8L - 207K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 146K - Valvoline Premium Blue Restore 10W-30
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408145 04/19/20 07:41 PM
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Quattro Pete Offline
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Strange thing I noticed: when I upload images from my PC, they get downsized to 768 (longer side), but when I upload from my phone, they get downsized to 1024.

[Linked Image]

Test


2002 530i   2015 Q5 3.0T   2018 Charger SRT
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408156 04/19/20 07:46 PM
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The Critic Offline OP
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Resized this one to 1080x1080 prior to uploading from my phone:

edit: still looks lousy. It appears the software shrunk the photo to 768X768.

C2A0E01C-99AC-4B85-9540-173E94F907A7.jpeg
Last edited by The Critic; 04/19/20 07:48 PM.

2011 Toyota Prius 1.8L - 207K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 146K - Valvoline Premium Blue Restore 10W-30
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408157 04/19/20 07:46 PM
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Quattro Pete Offline
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test 2

IMG_20200319_232227.jpg

2002 530i   2015 Q5 3.0T   2018 Charger SRT
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408161 04/19/20 07:48 PM
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Quattro Pete Offline
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OK, I see what's going on.

When you use the "Full Editor" and click on "Picture Uploader", it ends up resizing down to 768.

But when you use the "Quick Reply" box below the thread and click the little "up arrow" icon, then it resizes it to 1024.

The compression level is still pretty high, regardless of pixel resolution.



2002 530i   2015 Q5 3.0T   2018 Charger SRT
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408163 04/19/20 07:49 PM
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The Critic Offline OP
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Test 2 (resized to 768x768).

990BEA97-77C7-4E9D-919A-6CB50A213F70.jpeg
Last edited by The Critic; 04/19/20 07:50 PM.

2011 Toyota Prius 1.8L - 207K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 146K - Valvoline Premium Blue Restore 10W-30
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408164 04/19/20 07:50 PM
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OVERKILL Offline
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[Linked Image]
[Linked Image]


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2019 Audi e-tron technik (my wife hates it)
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408166 04/19/20 07:51 PM
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OVERKILL Offline
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Same photo, top one is using the image upload tool under "Full Editor", the 2nd one is using the "upload inline images" in the editor.


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2019 Audi e-tron technik (my wife hates it)
Re: Image Quality of Uploaded Photos [Re: OVERKILL] #5408168 04/19/20 07:52 PM
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The Critic Offline OP
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Originally Posted by OVERKILL
Same photo, top one is using the image upload tool under "Full Editor", the 2nd one is using the "upload inline images" in the editor.

Did you manually re-size both photos before uploading?


2011 Toyota Prius 1.8L - 207K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 146K - Valvoline Premium Blue Restore 10W-30
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408172 04/19/20 07:53 PM
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The Critic Offline OP
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Testing the in-line upload tool. Photo was not resized prior to uploading.

[Linked Image]

Last edited by The Critic; 04/19/20 07:58 PM.

2011 Toyota Prius 1.8L - 207K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 146K - Valvoline Premium Blue Restore 10W-30
Re: Image Quality of Uploaded Photos [Re: The Critic] #5408173 04/19/20 07:54 PM
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OVERKILL Offline
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Originally Posted by The Critic
Originally Posted by OVERKILL
Same photo, top one is using the image upload tool under "Full Editor", the 2nd one is using the "upload inline images" in the editor.

Did you manually re-size both photos before uploading?


Neither of them, both were uploaded "as is", image is 2.6MB, 2048x1536.


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2019 Audi e-tron technik (my wife hates it)
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