For many years I was a Canon user and I currently own an original Canon 5D and a Canon 1Ds MkIII. I really like both cameras but I found them to be impractical for ‘street photography’ so I was in the market was an alternative solution. The first solution was the Sigma DP1 and while I really like the output from the device it had too many defects and problems. After about three months I purchase a Sony NEX-5 and I really liked the concept but it still not a perfect solution.

The perfect solution eventually did arrive in the form of the SONY NEX-7. Within weeks of getting it I decided to switch over from using my DSLR cameras and I purchased all the E-Mount lenses that I could buy at the time and I also purchased a VEG-10E E-Mount camcorder. I have constantly used the NEX-7 and VG10 since Christmas 2011 and at this stage both cameras need to be replaced but I am unlikely to make any purchases until the beginning 2016 because I waiting to see If Sony introduce a high end E-Mount camera [A9 or A7R II].
The E-mount is a lens mount designed by Sony for their NEX series of camcorders and mirrorless cameras.

Initially this mount is implemented in Sony Alpha NEX-3 and NEX-5 with APS-C sensor size. E-mount integration into Sony camcorder products is provided with the Sony Handycam NEX-VG10. On 24 August 2011 new products were announced, specifically the NEX-5N as a successor for the NEX-5, the NEX-7 as a prosumer product, as well as the NEX-VG20 as the successor to the NEX-VG10.

The Sony E-mount is also implemented on 35 milimeter video camera of Sony FS-100. The successor to the NEX-3 named NEX-C3 was released a few weeks earlier. The NEX-C3 was replaced by the NEX-F3 in June 2012, which was succeeded by the NEX-3N in March 2013.

In September 2013, Sony announced the first model from new ILCE series, the ILCE-3000. In October 2013, the first models with full-frame sensor size were released as Sony α7 and Sony α7R.

APS-C format E-mount lenses with autofocus and electronic control:
  • Tamron 3.5-6.3/18-200mm Di III VC (B011) (announced 2011-12)
  • Sigma 2.8/19mm EX DN
  • Sigma 2.8/30mm EX DN
  • Sigma 2.8/19mm DN (announced 2013-01, new edition, available in black and silver, filter 46mm)
  • Sigma 2.8/30mm DN (announced 2013-01, new edition, available in black and silver, filter 46mm)
  • Sigma 2.8/60mm DN (announced 2013-01, available in black and silver, filter 46mm)
  • Zeiss Touit Distagon T* 2.8/12mm (announced 2012-09 for mid-2013)
  • Zeiss Touit Planar T* 1.8/32mm (announced 2012-09 for mid-2013)
  • Zeiss Touit Makro Planar T* 2.8/50mm (announced 2012-09 for spring 2014-02)
  • Full-frame E-mount lenses (manual focus, electronic control)[edit]
  • Zeiss Loxia Biogon T* 2/35mm (announced 2014-09)
  • Zeiss Loxia Planar T* 2/50mm (announced 2014-09)

Full-frame E-mount lenses (fully manual, no electronics):
  • Carl Zeiss Distagon T* Compact Prime CP.2 15mm/T2.9
  • Carl Zeiss Distagon T* Compact Prime CP.2 Super Speed 35mm/T1.5
  • Carl Zeiss Planar T* Compact Prime CP.2 Super Speed 50mm/T1.5
  • Carl Zeiss Planar T* Compact Prime CP.2 Super Speed 85mm/T1.5
  • Carl Zeiss Sonnar T* Compact Prime CP.2 135mm/T2.1
  • Carl Zeiss T* Compact Zoom CZ.2 70-200mm/T2.9
  • Mitakon 50mm f/0.95
  • Noktor 50 f/0.95
  • Rokinon 14mm T3.1 Cine Lens
  • Rokinon 24mm T1.5 Cine Lens
  • Rokinon 35mm T1.5 Cine Lens
  • Rokinon 85mm T1.5 Cine Lens
  • Rokinon 12mm f/2.8 UMC Fisheye
  • Rokinon 24mm f/1.4 UMC
  • Rokinon 35mm f/1.4 UMC
  • Rokinon 50mm f/1.4 UMC
  • Voigtlander VM 40mm f/2.8 Heliar Lens - (M mount, needs an adapter but was made for the Sony Alpha FE cameras)
  • Zunow Super Wide Angle SWV-E11-16

APS-C E-mount lenses (fully manual, no electronics):
  • Digital King 12mm f/7.4 Fisheye
  • HandeVision IBELUX 40 mm f/0.85
  • Samyang / Rokinon 2.8/8mm UMC Fisheye
  • Samyang / Rokinon 3.5/8mm Fisheye CS VG10
  • Samyang 12mm f/2.0 NCS CS
  • SLR Magic HyperPrime 50mm F0.95
  • SLR Magic CINE 35mm f/1.4 (Announced for Dec 2012)
  • SLR Magic HyperPrime 23mm F1.7 (Announced for Feb 2013)
  • SLR Magic HyperPrime CINE 35mm T0.95 (Announced for ???)
  • Yasuhara Nanoha 4x-5x macro lens with built-in LED light ("NANOHAx5(E)")

Due to the short flange focal distance of the Sony E-mount, many lenses can be adapted to be used on the Sony E-mount, although a crop factor will have to be taken into account for all cameras with APS-C or Super-35mm sensor format.

Minolta, Konica Minolta and Sony A-mount lenses can be used via the Sony LA-EA1,[17] LA-EA2, LA-EA3, or LA-EA4 mount adapters which provide electronic contacts and electro-mechanical diaphragm control. They allow the body to control the aperture of the lens and provide automatic exposure and Exif data support.

The LA-EA1 and LA-EA3 support slow (2–7 seconds) contrast autofocus with SSM and SAM lenses, other lenses can be used with manual focus only.[18] Older samples of the LA-EA1, NEX-3 and NEX-5 require a firmware update for this to work. The LA-EA2 and LA-EA4 adapters support fast phase-detection autofocus with all A-mount lenses (except for the few dedicated manual focus A-mount lenses), including screw-driven AF lenses. However, their translucent-mirror design requires an optical element in the light path and thus causes a light fall-off of about 30% for the autofocus to work. Also, it slightly decreases image quality.

The LA-EA1 and LA-EA3 do not need optical elements in the light path and thus will not change image quality in any way. The LA-EA1 and LA-EA2 are designed to cover the APS-C format only, whereas the LA-EA3 and LA-EA4 are full-frame capable (when used on a full-frame camera).

The following lens mounts can be used on the Sony E-mount with the use of various adapters available from third parties:

  • Alpa mount
  • Sony A-mount (Sony LA-EA1, LA-EA2, LA-EA3, LA-EA4 and 3rd part adapters with aperture ring)
  • BNCR mount
  • C-mount
  • Canon EF and Canon EF-S ("dumb" adapter variant with tilt available)
  • Canon FD-mount
  • Contax G
  • Contarex
  • Contax/Yashica bayonet (adapter variant with tilt available)
  • Exakta lens mount
  • Fujica X bayonet
  • Hasselblad Xpan
  • Konica AR (bayonet)
  • Leica M-mount (bayonet)
  • Leica M39 lens mount (LTM/L39) (screw)
  • Leica R-mount (adapter variant with tilt available)
  • M42-mount (screw) (adapter variant with tilt available)
  • Micro Four Thirds
  • Minolta SR-mount
  • Minolta/Konica Minolta A-mount (Minolta/Konica Minolta AF/Alpha/Dynax/Maxxum and Sony Alpha DSLRs) (Sony LA-EA1, LA-EA2, LA-EA3, LA-EA4 and 3rd party adapters with aperture ring)
  • Nikon F-mount (adapter variant with aperture ring for G lenses available, adapter variant with tilt available)
  • Olympus OM-mount (adapter variant with tilt available)
  • Olympus Pen F
  • Pentax Auto 110
  • Pentax K-mount (adapter variant with aperture ring for DA lenses available)
  • PL mount
  • Rollei-mount
  • T2-mount (screw)