While doing some tests with cubeface sizes for iPad 3 I discovered that I had a rendering error on this pano.
http://www.panoramas.dk/fullscreen6/f40-rio-de-janeiro.html
In the first place I thought it had to do with the tablet images which was 1414 and with using htmlrendermode="2"
My iPad 1 which uses the mobil 1024 cubefaces sdid not have the error. So I changed the iPad 3 to the same cubefaces and removed the htmlrenderingmode="2"
I had to make amark onthe cubface to make sure that it actually was the same. iPad 3 is very bad at loading cached cubefaces even if you delete the cache.
But the error persisted as you can see on the screenshots. Another weird thing is that the iPad 3 seems to be slightly sharper even with this 1024pixel-
Note that the screenshot was 2048 and reduced to 1024 to compare it. I did this with the smooth interpolation in PS which is actually for enlargement just to be sure that I did not sharpen it.
The error seems to only be in one of the a seems so it may be difficult to find it. The seem is between the _f and _r tile.
I now need to go through my other panos and see if I can find the same.
Hans