Originally posted by Wheatfield It is totally unrealistic to expect first party support for third party equipment.
Sony opened its E mount standard, which helped them dramatically when E mount was just released. For quite a while, Sigma's 30 and 60mm were my favorite lenses on NEX-5. And, the reasons I bought NEX-5 were: 1) I could use it as an universal digital back for many many old lenses I have in the storage and 2) sigma 19,30, and 60 are sharp, reasonable fast, and very very low priced even new. For long time, Sigma 30 and 60, and Sony 16 were the only AF E-mount lenses I had. Sigma's support definitely made my NEX-5 purchase easier.
I will not say it is "totally unrealistic". And for Pentax particular, gaining 3rd party lens/flash support is very critical, and pentax should make it easier, not harder.