Under iOS6.n I set my 3rd generation iPad Desktop with one of my own photos from iPhoto and I could centre and scale it to suit. The picture had a slight blemish and I have today edited that out in iPhoto on my Mavericks iMac and tried to replace the old Desktop. However, as before, when selected from iPhoto the photograph is off-centre and "too large" to fit the iPad's screen comfortably so I wish to Move and Scale it as invited on the desktop choose screen. Well, I can centre it just fine and it stays where I put it, but it won't stay scaled. I can pinch it to size but as soon as I let go of the pinch it springs back to the original "too large" a size. How can I both retain the correct centre alignment and pinch it down to size so that the scaling is also retained? Is this a bug/undocumented feature of iOS7.0.4 (or iOS7.n) or am I yet again being incedibly stupid and overlooking the blindingly obvious?