f-number.com » f/2.5 http://f-number.com f/1.2 - f/32 and beyond... Sat, 14 Jan 2012 21:37:26 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Leica Apo-Macro-Summarit-S 120 mm f/2.5 CS http://f-number.com/2009/08/22/leica-apo-macro-summarit-s-1-2-5-120-mm-cs/ http://f-number.com/2009/08/22/leica-apo-macro-summarit-s-1-2-5-120-mm-cs/#comments Sat, 22 Aug 2009 00:35:39 +0000 f-number http://f-number.com/?p=181 Introduced as part of the Leica S-System line up, the Apo-Macro-Summarit-S 120mm is a macro lens with reproduction scale of 1:2.  The lens is also suitable as a portrait lens, with a maximum aperture of f/2.5.

The lens has an equivalent 35mm-format focal length of 96mm.

LEICA APO-MACRO-SUMMARIT-S 120 mm F/2.5 CS

Specification at a glance:

  • Lenses/groups: 9/7
  • Image angle (diagonal, horizontal, vertical): approx. 25°, 21°, 14°, approx. corresponds to 96mm in 35mm format
  • Aperture range: f/2.5 – 22
  • Minimum focusing distance: 0.57m
  • Magnification: 1:2
  • Filter size: 72mm
  • Dimension (diameter/length): 91 mm/128 mm
  • Weight: 1135g

More information at the Leica web site:
http://www.s.leica-camera.com/apo-macro-summarit-s-1-2-5-120-mm-cs/?lang=en

]]> http://f-number.com/2009/08/22/leica-apo-macro-summarit-s-1-2-5-120-mm-cs/feed/ 0 Leica Summarit-S 70 mm f/2.5 ASPH. CS http://f-number.com/2009/08/22/leica-summarit-s-1-2-5-70-mm-asph-cs/ http://f-number.com/2009/08/22/leica-summarit-s-1-2-5-70-mm-asph-cs/#comments Sat, 22 Aug 2009 00:24:43 +0000 f-number http://f-number.com/?p=177 Introduced as part of the Leica S-System line up, the Summarit-S 70mm standard lens spots a maximum aperture of f/2.5.  This compact lens has a minimum focusing distance of 0.5 metre.

The lens has an equivalent 35mm-format focal length of 56mm.

LEICA SUMMARIT-S 70 mm F/2.5 ASPH. CS

Specification at a glance:

  • Lenses/groups: 8/6 + 1 filter screen (1 aspherical surface)
  • Image angle (diagonal, horizontal, vertical): approx. 42°, 35.5°, 24°, approx. corresponds to 56mm in 35mm format
  • Aperture range: f/2.5 – 22
  • Minimum focusing distance: 0.5m
  • Magnification: 1:4.7
  • Filter size: 82mm
  • Dimension (diameter/length): 90 mm/93 mm
  • Weight: 740g

More information at the Leica web site:
http://www.s.leica-camera.com/summarit-s-1-2-5-70-mm-asph-cs/?lang=en

]]> http://f-number.com/2009/08/22/leica-summarit-s-1-2-5-70-mm-asph-cs/feed/ 0 Leica Summarit-S 35 mm f/2.5 ASPH. CS http://f-number.com/2009/08/22/leica-summarit-s-1-2-5-35-mm-asph-cs/ http://f-number.com/2009/08/22/leica-summarit-s-1-2-5-35-mm-asph-cs/#comments Sat, 22 Aug 2009 00:14:38 +0000 f-number http://f-number.com/?p=171 Introduced as part of the Leica S-System line up, the Summarit-S 35mm lens spots a maximum aperture of f/2.5.  The elegant and minimalist design is unmistakably Leica.

The lens has an equivalent 35mm-format focal length of 28mm.

LEICA SUMMARIT-S 35 mm F/2.5 ASPH. CS

Specification at a glance:

  • Lenses/group: 11/9 (2 aspherical surfaces)
  • Image angle (diagonal, horizontal, vertical): approx. 75°, 65°, 46°, approx. corresponds to 28mm in 35mm format
  • Aperture range: f/2.5 – 22
  • Minimum focusing distance: 0.55m
  • Magnification: 1:11
  • Filter size: 82mm
  • Dimension (diameter/length): 88mm/122mm
  • Weight: 930g

More information at the Leica web site:
http://www.s.leica-camera.com/summarit-s-1-2-5-35-mm-asph-cs/?lang=en

]]> http://f-number.com/2009/08/22/leica-summarit-s-1-2-5-35-mm-asph-cs/feed/ 0 AF-S DX NIKKOR 18-200mm f/3.5-5.6G ED VR II http://f-number.com/2009/07/30/nikkor-dx-18-200mm/ http://f-number.com/2009/07/30/nikkor-dx-18-200mm/#comments Thu, 30 Jul 2009 13:33:21 +0000 f-number http://f-number.com/?p=130 Nikon has just announced the new AF-S DX 18-200mm replacement, notable improvement being the VR II vibration reduction engine.

AF-S DX NIKKOR 18-200mm f/3.5-5.6G ED VR II

Other improvements include better zoom mechanism which reduces the “zoom creep”, a common problem with the previous mode.   A zoom lock has also being incorporated, which allows the lens to be locked when not in use and for better transportation.

More information at the Nikon web site:
http://www.nikon.com.au/productitem.php?pid=1324-08eb88990c

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