Boo-yah!!! Great news for Yosemite users who want to tether their supported Sony cameras using Sony Remote Camera Control. Sony has released Remote Camera Control v3.4 which adds Mac OS 10.10 Yosemite Support.
Sony A7, A7R, A7S, A7II, A99, A77MII, A58, A900, A850, A700
Double click the [RCC34_1501a.dmg] icon displayed on the desktop.
It is normally saved in the Download folder.
Double click [RCC_INST.pkg] in the opened folder to start installation.
Follow the instructions in the screen.
The Auto icon of the camera and that of Remote Camera Control are different as follows.
Auto icon on DSLR-A700/A850/A900
Auto icon on Remote Camera Control Ver.3.4
For Image Data Suite (Remote Camera Control Ver.2.0) Users:
As Remote Camera Control Ver.2.0 is a part of Image Data Suite, it will not be overwritten by installing Ver.3.4. If you install Ver.3.4 to the computer where Ver.2.0 is already installed, both Ver.2.0 and Ver.3.4 exist together. However, you cannot use Ver.2.0 and Ver.3.4 at the same time.