The on-camera flash has been used as a fill flash on a number of occasions. I have the battery grip attached at all times. The Sony optics that I have work well as do the old Minolta lenses. The camera just feels great, and I love shooting with it. The only negative is the flash attachment, which is no problem for me as I use a Metz potato masher so the flash can be moved to the side or bounced.
I mentioned Cameracraft yesterday but forgot to state a magazine that I have been subscribing to for years: Black & White. Comes out of California. 160 pages of fabulous black and white photos. Next to no advertising. If you are into B&W go to BandWmag.com.
I subscribe to Cameracraft. It is a British publication that comes out every two months. Go online and search for camercacraft magazine for further information. The last two issues were 48 pages in British format. Great photography, short concise equipment, printing, computer articles. None of the heavy advertising like we were used to here in the states. Members of my camera club also enjoy the magazine.
I use a Minolta Max 9 along with some Minolta lens from that era. My darkroom is still intact, so I do my own processing.
I move cards between 3 Sony cameras without reformatting each time, no problems (A99II, A77, RX100m7). Notice that each camera has a different size sensor.
Your enlarger needed to have a color head with the CMY filters. These filters also helped when using multi-grade black and white papers.
I bought one new years ago and now use it on a Sony a99II and it works fine. You will notice that there are only 5 contact on the rear mount so not all features will work but I have never noticed the difference. Go for it.
Does anyone know if there are adapters available to make use of my several Leica R lenses. I would like to use them on a new digital body.