Digital Photography Review has published a review of the first production version of the A55. There are some unusual "features" that it found in its video tests:
- The camera can record approximately 29 minutes of video in AVCHD mode, but it can only record 9 minutes if SteadyShot is turned on. The review is unclear as to why image stabilization affects storage capacity so much, but it may be due to the fact that the camera does digital image stabilization inside the camera rather than using lenses with optical image stabilization.
- Even though MP4 uses a lower bitrate and should allow a storage card to save more video, storage of MP4 files is limited to 2GB at a time, which limits the maximum duration of a shot to around three minutes. AVCHD doesn't have this limitation and can span multiple files in a single shot.
- DP Review found that the A55's autofocus feature was often less than helpful in video mode, as the camera sometimes lost track of the object that it was focusing on and went out of focus. This problem was especially pronounced with fast-moving sports events.
- They found that the A55 has a fairly pronounced rolling shutter "jello" problem, about the same as many other DSLRs, but more severe than some competitors.
- The review states that the A55's average AVCHD bitrate is 17Mbps, but it's unclear if that's the camera's maximum bitrate. Some other DSLRs and camcorders can support 24 to 30 Mbps.