Bought the vitacon 3x teleconverters for the A1 but the subject taken at 600mm..(3x200mm) with tripod. The image looks pixelated compared to the one taken without the teleconverter at 200mm. The pixelation is obvious when both images are zoom in for details using photoshop 6.0
So any good teleconverters in the market?

So any good teleconverters in the market?
