Specs

• Min focus distance - 70cm
• Diaphragm blades - 9
• 16 elements in 10 groups
• 1 aspherical ED lens, 2 aspherical lenses, 1 Super-ED lens, 3 ED lenses and 1 HD lens
• Filter - 72mm
• Size - 79.4 x 160 mm
• Weight - 750 grams

Available at:

• http://www.amazon.com/Olympus-40-150mm-Interchangeable-Panasonic-Cameras/dp/B00NGSLSK4/

Hands-on and previews

• http://www.photographyblog.com/news/olympus_40_150mm_hands_on_photos/

Specs

• FF coverage
• F/5-6.3 to 22
• 24 elements in 16 groups
• 2 FLD and 3 SLD lens elements
• Hyper Sonic Motor AF System
• Optical Stabilizer with Accelerometer
• Zoom Lock & Manual Override Switches
• Minimum Focus Distance - 102.4″
• Splash and Dust Proof Mount (Sports)
• Lens Hood and Rotatable Tripod Collar

Hands-ons

• http://www.photographyblog.com/news/sigma_150_600mm_contemporary_hands_on_photos/
• http://www.dpreview.com/articles/8988726581/photokina-2014-hands-on-with-sigma-s-new-150-600mm-telezooms

Available at

• Sports version - http://www.adorama.com/SG150600SNK.html
• Usual version - http://www.bhphotovideo.com/c/product/1082154-REG/sigma_150_600mm_f_5_6_3_dg_os.html

Specs

• Focal length - 14-150mm (equivalent to 28-300mm in the 35mm/full-frame format)
• Maximum aperture - F/3.5-5.8
• Lens construction - 17 elements in 13 groups
• Minimum focus distance - 0.5m (19.7 in.)
• Maximum magnification ratio - 1:3.8 (at f=150mm: MFD 0.5m)
• Filter size - φ52mm
• Length - 80.4mm (3.2 in.)
• Entire Length - 85.24mm (3.4 in.)
• Diameter - φ63mm
• Weight - 280g (9.9 oz.)
• No. of diaphragm blades - 7 (Circular diaphragm)
• Minimum aperture - F/22
• Flower-shaped lens hood included
• m43 mount

Available at:

• Black - http://www.amazon.com/Tamron-AFC001700-14-150mm-3-5-5-8-Panasonic/dp/B00L9IUTAS/
• Silver - http://www.amazon.com/Tamron-AFC001S700-14-150mm-3-5-5-8-Panasonic/dp/B00L9IUUJ8/

Available at:

• http://www.amazon.com/Panasonic-H-NS043-NOCTICORON-42-5mm-Cameras/dp/B00HXE4GZQ

• 12 elements in 9 groups, 2 aspherical lenses, one UHR
• 200 g
• Price - about $299

Previews:

• PR - http://www.dpreview.com/news/2012/07/18/Panasonic-announces-Lumix-G-X-Vario-45-150mm-F4-0-5-6-ASPH-Mega-OIS-zoom-lens-for-micro-four-thirds
• http://www.photographyblog.com/news/panasonic_45-150mm_f_4-5.6_hands-on_photos/
• http://www.fotointern.ch/archiv/2012/07/18/zuwachs-beim-panasonic-g-system-lumix-g5-und-zwei-objektive/
• http://photoscala.de/Artikel/Lumix-G-Vario-4-5645-150-mm-ASPH-MEGA-OIS

Samples:

• http://www.ephotozine.com/article/panasonic-lumix-vario-45-150mm-sample-photos-19712

Available at:

• http://www.ebay.com/itm/NEW-PANASONIC-LUMIX-G-VARIO-45-150mm-F-4-5-6-SILVER-4-G5-GX1-GF5-GH2-G3-/350689041269

* http://www.amazon.com/Panasonic-45-150mm-f4-0-5-6-O-i-s-H-fs45150-k/dp/B0091BC5IE/

Note: Price and availability are unknown at the moment.

Lens Features:

1. 4x ultra-telephoto zoom lens with a focal length range of 150mm to 600mm The focal length range of this lens was extended by 50mm on the wide-angle side and 100mm on the telephoto side compared to the existing model (Model A08), making it possible to take even more striking photographs of birds, wildlife, sports, and other distant subjects. Mounted on APS-C DSLR cameras, it has a stunning equivalent focal length range of 233mm to 930mm, almost to 1000mm.

2. World class image quality
   Employing 20 elements in 13 groups and boasting an advanced optical design, it delivers a superior balance of resolution and contrast for sharp, clear images. The front group contains three LD (Low Dispersion) glass elements (two in the first group, one in the third) for enhanced optical correction effectiveness, enabling the lens to thoroughly compensate for on-axis aberrations at the telephoto end.
   The lens also adopts eBAND Coating, developed from state-of-the-art coating technologies, and conventional BBAR(Broad-Band Anti-Reflection) Coating to greatly suppress ghosting and flare even when shooting under adverse lighting conditions.

3. Achieves a 600mm focal length in a compact easy-to-handle package
   Ingenious optical design features minimize the movement of lens groups within the lens when zooming. This reduces the amount of barrel extension needed to cover the complete focusing range, making the entire lens more compact.

4. Beautiful background blur effects
   Adopting a 9 blade circular diaphragm enables users to create beautiful background blur effects (bokeh), which provide even greater potential for creative expression. This circular diaphragm retains a nearly circular shape even at two stops down from its maximum aperture.

5. Vibration Compensation
   Tamron’s proprietary VC (Vibration Compensation) image stabilization system uses a three-coil system, delivering significantly sharper images and creating greater opportunities for handheld ultra-telephoto photography.

6. Comfortable autofocus
   Tamron’s new SP 150-600mm F/5-6.3 Di VC USD features a USD (Ultrasonic Silent Drive) ultrasonic motor drive*³ for swift and accurate AF response, it delivers high torque, very fast response times, and very low noise. The full-time manual focus mechanism allows users to make fine manual focus adjustments at any time even when AF is engaged.

7. New elegant, high-class external finish
   Tamron has upgraded the cosmetic design and finish of this lens to create a more sophisticated, high-end look in keeping with the demands of discerning full-frame DSLR users.
   Employing a sophisticated linear pattern rubber grip on the zoom and focus rings and an attractive and stylish tungsten silver name-brand ring, this newly designed model accentuates its visceral presence with understated elegance and class.

8. Easy-to-use tripod mount
   The tripod mount has been completely redesigned to provide superior stability, durability, ease of use, and portability.

9. Comes with "SILKYPIX Developer Studio for Tamron", RAW image development processing software for Tamron’s SP lenses