Nice - zooming doesn't feel as smooth on my end though i.e. a bit jerky sometimes (OSX 2014 Mac Pro, Chrome).
Really like what you guys are building BTW! Coincidentally - have implemented a quick zoom feature for a private collector client/SW many many years ago :) Nothing fancy - no progressive loading/canvas/server, just a quick fake zoom for big images - but clients loved it.
Not to undermine your implementation, but this is not really new stuff: the Google Art Project presented this same technology over a decade ago, and the company I worked for in Florence (Centrica) even earlier, as a way to "deep zooming in" the Uffizi Gallery masterpieces. I was involved in a lot of the digitalisation of the paintings, some of which needed over 100 different shots and a crazy light configuration to create a super-hires version that could be smoothly viewed both online and offline (and without any blurriness). But kudos for coming up with such solution by yourselves.
Fabien, I'm not sure how to respond to that. I never said we invented it :-) We've just made a new feature (using a well-known technology) to our product and wanted to share the info, see if there's something we can do better/improve. No one ever said anything about inventing it or coming up with this solution on our own - these are simply your deductions, your thinking, and your words.
But thanks for sharing your story.
Fair enough, I misinterpreted and that can happen. Like I said, kudos for coming up with the solution, it is indeed a nice to have feature ;)
To be fair, you gave no context to what you were looking for from this post. I admit when I went to the site I was also thinking "what's the 'Cool UX' here? I've seen this before." It looks nice and performs fairly smoothly though, nice work.