Custom zoom steps. Render new tiles at 4x. ie., Split each tile to 16 tiles in new layer.

[bibinjacobpulickal]

I have tiled images at zoom levels 2.5x, 10x and 40x corresponding levels have 4, 64 and 256 number of tiles. Is there a way I can render these tiled images flawlessly?
I tried quite a number of methods. Here, each tile is split into 4 tiles in the next zoom level. But, my requirement is to get 16 tiles for each tile in previous level.

[jessedc]

I think I'm right in saying that scales 2.5/10/40 won't tile cleanly.

The underlying CATiledLayer will call back looking for tiles at scales that are a multiple of the screen scale and the scroll view's zoom. This correspond to scales 3, 6, 12, 24 on a @3x device or 2, 4, 8, 16 on a @2x device.

For a perfect fit it might be worth taking the most detailed set of tiles you've got and working out a way to stitch them together to create the exponential size changes you'd need.

I hope that helps