Are there users here that are running Sony a99 and A550 cameras. These are the two cameras I use and I have questions on how to use them best for fill lighting shooting and outdoor wedding for example. I using the Zeis 24-70 2.8 in the a99 with a Sony HVL-F32M Flash and a prime 50 mm 1.4 on the a550 with a Sony HLV-42AM Flash