Here are more shots from the Sony Alpha 900 + Sony Carl Zeiss Sonnar T* 135mm F1.8 ZA!

Yes, 1:1.33x. This is with the APS-C mode of the A900. 405mm F8 1/400s ISO1600 in APS-C mode.

405mm F6.3 1/400s ISO1600 in APS-C mode. I focused first, got approximate focus, snapped 2 shots in case the bird would fly to another branch, then half-pressed again to refocus accurately. Focusing through 2 teleconverters made the lens a lot slower to focus and inaccurate.
I'm happy though that the Zeiss survives 2 teleconverters - it loses its shark bite and a smudge of contrast, and becomes a regular lens. But this still beats my Tamron 200-400mm F5.6 flat!

405mm F5 1/400s ISO200, 100% crop.

405mm F3.5 1/200s ISO500. Great shot, yes? Well, much greater if the white butterfly with red yellow and black spots was still on it.

The teleconverters really kill the insane focusing speed of the Carl Zeiss 135mm F1.8.

That's just prime. Left to right: Peleng 8mm F3.5 M42-mount circular fisheye, Vivitar 24mm F2.0 DIY tilt-shift, Minolta 28mm F2.8 Crossed-XX, Minolta 50mm F1.4 Original, Sony Carl Zeiss 135mm F1.8

And a top view, this time with the 2 teleconverters.

So how about some daytime separation? 135mm F1.8 without teleconverters. Superb!
thisiskj does a Barack Obama smile. Shot at F1.8.
eddyhan at F1.8 1/13s ISO1600. I was sitting in the rear left side of his car and he was in the driver seat (not driving when he looked back, fortunately.) The minimum focus distance of this lens continues to astound!