Here is the 3 screws on an A550 and A700, respectively:
[image|1054533]
+
+
[image|1054535]
The A350 will have the same threw screws. Be sure to follow the advise in this link: http://www.dynaxdigital.com/sony-alpha-crop-sensor-camera-discussion/method-for-adjusting-backfront-focus-on-the-a700-and-other-sony-cameras/msg78289/?topicseen#msg78289
Here is the 3 screws on an A550:
[image|1054533]
The A350 will have the same threw screws. Be sure to follow the advise in this link: http://www.dynaxdigital.com/sony-alpha-crop-sensor-camera-discussion/method-for-adjusting-backfront-focus-on-the-a700-and-other-sony-cameras/msg78289/?topicseen#msg78289