These are conventional ghostings that you will experience with all cameras and lenses in such situations. ~99.9% (roughly) of the light is transmitted directly to the sensor. ~0.1% is bounced back and forth creating such ghost images.
Depending on the lens this can be more or less - it has little to do with the A33 other than that the sensor is also reflecting light back towards the lens but this applies to all cameras anyway. The semi-transparent mirror introduces a further glass element but the effect is usually negligible because of the angle of the mirror in the optical path.
As a rule of the thumbs this is least pronounced with lenses featuring few lens elements and these elements should be all multi-coated.
I used the A33 for a while myself and I really enjoyed it. It's a good camera.
Depending on the lens this can be more or less - it has little to do with the A33 other than that the sensor is also reflecting light back towards the lens but this applies to all cameras anyway. The semi-transparent mirror introduces a further glass element but the effect is usually negligible because of the angle of the mirror in the optical path.
As a rule of the thumbs this is least pronounced with lenses featuring few lens elements and these elements should be all multi-coated.
I used the A33 for a while myself and I really enjoyed it. It's a good camera.