Summary: The Sony 75-300mm is a very useful addition to the standard DT 18-70mm kit lens, greatly extending the available range to include powerful telephoto facilities. This makes it ideal for portraits, sports and wildlife photography, or simply getting closer to any distant subjects.
In terms of build and optical quality, the 75-300mm is roughly equivalent to the DT 18-70mm kit lens, so while it will extend your focal range, it won’t be a step-up in terms of overall quality.
Pros: 4x telephoto zoom, complements kit lens., Budget price especially in twin lens kit., Anti-shake thanks to A100 body., Lens hood included.
Cons: Soft in extreme corners when zoomed-out., Slow and noisy focusing., End section rotates while focusing., Anti-shake less effective at 300mm in our tests.
Summary: The Sony 75-300 mm is a lens with a low price and fairly good optical performances, as evidenced by our Sony 75-300 mm test. The price / quality ratio of this lens is thus high. The noisy autofocus is just too bad.
Pros: Light and compact, Inexpensive, Low burden of flare
Cons: Noisy autofocus, Lower resolution at the longest focal length, Somewhat sensitive to chromatic aberration