Advantages towards Sony NEX-7
- Usable higher MP (23MP vs 16MP)
- Better DR at lower ISO (approx. 2 levels which is very significant)
- Better higher ISO performance (approx. 1 stop)
- Built-in flash
- Better EVF (just an educated guess)
- Focus peeking for MF lenses
- Better selection of lenses – Nex only offers two fast primes at 24mm and 50mm. Although Zeiss 24mm offers high IQ, it is also very expensive, and both are quite bulky. In comparison, m43 system already offers 12mm, 20mm, 25mm, and 45mm (by both Olympus and Panasonic). In addition, 75mm f/1.8 will be released soon. More flexibility on the zoom side too, especially with Panasonic’s announcement on 12-35mm/f2.8 and 35-100mm/f1.8 lenses. There is no comparison between the two systems and this isn’t about to change anytime soon based on Sony’s recently revealed roadmap (lots of delays). M43′s 12/25/45 trio are considered amongst the best set of primes anywhere in terms of IQ.
- Will be smaller and lighter as a package, mainly because the lenses will be lighter and more compact
- Built-in IBIS, which offers image stabilization for all lenses, including prime lenses. Still remains to be seen but the new 5-axis IBIS sounds promising.
- Better JPG engine
- Weather sealed (although there is only one weather sealed lens available – 12-150mm. Soon, 60mm macro lens will be released which will also be weather sealed)
- Much faster auto-focus and potentially better subject tracking
- Better manual controls on the body
- Availability of a proper battery grip
- If portability is important to you, get Olympus E-M5 (or even smaller models from m43 pool)
- If high dynamic range at base ISO is important to you (i.e. you take high contrast shots frequently), then get Sony NEX-7
, ideally paired up with decent lenses like Zeiss 24mm.
- If you are on a budget, neither are good for you. Consider either cheaper m43 body or Nex 5n.
- If you can live with Nex lens selection, then go for Sony Nex 7.