Simple Experiment: Picture Size and Posting

Korsakoff

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There have been questions lately regarding picture size posting. This discusses a simple experiment I tried to see approximately what size picture would be accepted. The old forum software requested the JPG to be 200 MB or smaller.

I began with an image I knew would not load. It's a picture of Ross Fountain in Butchart Gardens on Vancouver Island, British Columbia. I took the shot in August 2011 using a Nikon D7000. The picture is in raw mode (Nikon Electronic Format or NEF). I imported it into Photoshop and saved it out as a JPG saving it as lossless as you can save a JPG. I then saved nine iterations, always beginning with the original JPG, and reduced the size by 10% each time. Finally, at 30%, it accepted the picture. I then tried 35% and that posting was rejected.

Below is the table of file sizes I tried. The old system would have taken the 10% size but not any bigger, so now the system accepts file sizes about three times bigger. The picture reduced to 30% of original size follows.

Table.jpg


Fountain 0.3.jpg


PS: If I wanted to actually post the picture for viewing purposes, I would post a smaller version. I also almost put this in NPR, but since it's not about politics, I figured it would be rejected.
 
There is a Test sub-forum for stuff like this ... and thanks for keeping NPR unpolluted :ROFLMAO:

Dave
 
You’re welcome, Dave! And the Test Sub-Forum is where I did all the testing to get the data.
Thanks and nice. I've been to the Butchart Gardens but not for many years .... I'd like to be there today, it's a bit cold here in Saskatoon.

Dave
 
Well, it seems that the image tool resizes the image to no more than 1200 pixels wide. I just tried a 4800-wide image in the test area and it was scaled down. I think that's good news.

This means that if you can get the file size down (low JPEG quality, for example) the image size may not matter.
 
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