What's the best size/resolution for taking pictures for Photosynth?

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  • Updated 11 years ago
What's the optimum size/resolution for taking pictures for Photosynth, in megapixels? Is there an official recommendation?
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Andrew Denny

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Posted 11 years ago

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Joshua Podolak, Employee

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Hi Andrew.
Obviously, with higher quality, the viewing experience gets better (since you can zoom in more). If all you're going for is synthing quality, then 2 megapixels is currently all the photosynther uses.
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Andrew Denny

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Thanks, while I'm an experienced photographer I'm a beginner synther, so I don't want to waste anyone's time or bandwidth :-)
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Nathanael Lawrence

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Andrew,

It should be pointed out that because the Photosynth viewer (the browser plugin) uses Seadragon to load the images, when someone views your photos they are only downloading the image tiles necessary for displaying that photo at its current onscreen resolution.

(When Photosynth analyses your photos for features (details), it is simultaneously creating several different resolutions of each of your photos, dividing each resolution into tiles, and uploading all the tiles and the information about how to map them all back together up to the Photosynth servers. As Joshua pointed out above, only the 2 megapixel versions are used for finding image features to then match to each other, but the end user viewing your synth will spend the same amount of bandwidth viewing any portion of your synth, regardless of what resolution you uploaded the photos at.

This is because wherever you move throughout a synth, Seadragon downloads the tiles for the current view and discards all previously downloaded tiles so that it doesn't fill your hard drive with a mountain of image tiles. The only person really paying any price as far as bandwidth goes is you when you make the initial upload. If you're concerned about using up your 20GB account, I would refer you to this topic.

I say all of this only to say, "Please use the full resolution photos". The beauty of Seadragon is being able to zoom deep down into the photos and load in the extra details when you want to see them and not before.
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Andrew Denny

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I guess I was worried about jamming up the system or finding that my initial uploads had been too adventurous. I haven't started a synth of my own yet. The first stage was in finding a suitable subject, the second was in taking dozens - hundreds - of photos. I didn't want to raise my hopes and then spend ages taking the pics, and finding that I'd gone about it the wrong way. Thanks!