By Swarup Patra
I recently purchased a Sony A9 and took some pictures at a reasonably low ISO (640). I noticed some grainy-ness at 100% crop specifically in the background. Both pictures taken using a Sony 200-600 lens at 6.3 and 640 ISO. I would like to get some opinions what might be driving this:
1. This is typical
2. This is due to some settings I have that need to be changed that I'm not aware of
3. This is an issue with my particular camera
Raw files saved here:
It takes about 60 seconds for my a9 buffer to clear with a Sony G Tough card in Slot 1 and compressed Raw file format. This seems almost twice as long as some claims. The test is to shoot till the buffer is full, about 240 files, then time how long it takes until the buffer is clear, that is the led goes off and the files are done transferring. Is there an expected variance in the camera or SD card write speed that would explain this? or do I have a buggy camera or card.
A fellow Sony user is having an issue with his 100-400 on his A9. In 45 minutes of use this happens four or five times. The AF display is there are black. He attempts to focus on anything, infinity or close to force the lens to focus and nothing happens. A restart of the camera gets it going each time. Things improved at bit after updating to V6 firmware. It stays operational longer and a restart seems to always fix it. With V5 that wasn’t always the case.
He called Sony and they had him send it in. They said they fixed it but when he got the lens back it behaved the same way.
He also has a 200-600 that does not behave this way but the number of in focus images is not consistent with what I am getting with an A9 and 200-600.
Has anyone had this issue with the a9/100-400 combination?