I'm referring to those Sony lenses that actually designed for FF body. Cuz I dun wan to get a DT lenses, as mentioned by Dominum, & get cropped when using in a FF body. So it defeat the benefit of using FF.
for tamron, lenses that are designated DiII are crop sensor lenses. Di lenses are full frame lenses.Also take note that some 3rd party lenses (Sigma and Tamron) are also design for APS-C only.
I think, for Sigma is DC lenses. Not sure about Tamron though. However, I usually read the lens spec 1st to know if it is design for APS-C or FF.
Just saw you looking for FF A850 or A900 at BNS. Good luck!
55-200mm has DT label on it.just to add on, there's 2 55-200mm(SAM and without) which are DT as well