Well I'm very not lucky since I got the lens. I'm on holiday for the week and there is just big cloud and rain out there
. But, I have got the chance to took some picture the first day outside with some sun, the rest is pretty much with bad light environment.
The first impression of the lens for the moment : Not very heavy, focus very quick with the A900 (you can follow with not problem on continuous mode bird in fly, I have put example of this), the hood is a little big shaky but it stay there once correctly screwed, build like a tank as the G series are.
For picture quality, well like any lens like that you have to get time to very anticipate and learn how to use it, I think it is impossible to be great on a lens at the beginning (what I'm learning so far with my short photograph life). I'm not doing full detail technical review, always it is base on feeling and picture analysis on my computer :
-> Vignetting almost absent even full open
-> Sharp Sharp Sharp even full open
-> Tripod probably the best option ... but so fare I'm impress by the handled experience, you can see picture where I have been able to get good detail of plane flying at 1/200s at 560mm with the 1.4x
-> the 1.4x is almost not eliminating detail, I would probably most of the time let is stay on the lens. (focus not affect also by the adapter).
-> I have try some F/16, F/22, and even F/32 aperture, and it is usable at all of them. Mostly apparent lost of detail after F/16 (but still better than other lens in there best spot).
-> out of focus effect are very good.
-> the minolta 2x like for the other G lens I have tried is not the "Bienvenue" and the focus is off when on it. For the moment I prefer using the Tamron SP model, but not had time to compare the performance. But, for the moment I don't see the advantage compare to the 1.4x (where up scaling the image are probably better, like I have experienced with the 200mm 4.0 Macro)
-> Need to pay attention to the quality of the air outside ... for the moment some picture are not sharp and this is not because of miss focus ... but clearly because of atmospheric distortion (heat, dust, humidity water particles)
Here is some examples : http://www.pbase.com/nadeauf/minolta_400mm_45
I'm really considering this lens like the replicate of the 200mm HS 2.8 in a bigger focal length. Now ... is this lens justify the price ... my answer is probably not, I don't see a reason to invest this amount of money on a single lens ... if you are not Minolta maniac ... or to much crazy ... I hope to found the cure
hi hi .