f-number.com » f/3.5 http://f-number.com f/1.2 - f/32 and beyond... Tue, 09 Feb 2010 14:52:55 +0000 en hourly 1 http://wordpress.org/?v=3.0 Nikon AF-S DX Micro NIKKOR 85mm f/3.5G ED VR http://f-number.com/2009/10/17/nikon-af-s-dx-micro-nikkor-85mm-f3-5g-ed-vr/ http://f-number.com/2009/10/17/nikon-af-s-dx-micro-nikkor-85mm-f3-5g-ed-vr/#comments Sat, 17 Oct 2009 08:39:56 +0000 f-number http://f-number.com/?p=268 Nikon has just announced their first DX macro lens, suitable for all DX format Nikon DSLR.

AF-S DX Micro NIKKOR 85mm f/3.5G ED VR

The lens incorporates the latest VR II vibration reduction system, Silent Wave Motor for quiet and efficient auto focus, ED lens elements for high contrast, and has a reproduction ration of 1:1 and closest focusing distance of 28.6cm.  The 35mm equivalent focal length is 127.5mm when used on DX format DSLR.

Specifications at a glance:

  • Focal length: 85mm (127.5mm equivalent)
  • Maximum aperture: f/3.5
  • Closest focusing distance: 0.286m/0.9 ft.
  • Reproduction ratio: 1:1
  • Filter size: 52mm
  • Weight: 355g

More information on the Nikon web site:
http://www.nikon.com.au/productitem.php?pid=1352-155ca6f546

]]> http://f-number.com/2009/10/17/nikon-af-s-dx-micro-nikkor-85mm-f3-5g-ed-vr/feed/ 0 Carl Zeiss Distagon T* 18mm f/3.5 for Canon EF http://f-number.com/2009/09/14/carl-zeiss-distagon-t-18mm-f3-5-canon-ef/ http://f-number.com/2009/09/14/carl-zeiss-distagon-t-18mm-f3-5-canon-ef/#comments Mon, 14 Sep 2009 12:01:46 +0000 f-number http://f-number.com/?p=238 Carl Zeiss has just announced the Distagon T* 18mm f/3.5 lens, compatible with the Canon EF mount.  This is in addition to the existing Nikon F mount and Pentax K mount.

Carl Zeiss Distagon T* 18mm f/3.5 Canon EF

Specification at a glance:

  • Focal length: 18mm
  • Aperture range: f/3.5 – f/22
  • Closest focusing distance: 0.3m
  • Filter size: 82mm
  • Weight: 510g

More information at the Carl Zeiss web site:
http://www.zeiss.com/C12567A8003B58B9/ContentsWWWIntern/E0943E181906E994C125746C0053918C#1

]]> http://f-number.com/2009/09/14/carl-zeiss-distagon-t-18mm-f3-5-canon-ef/feed/ 0 Canon EF-S 18-135mm f/3.5-5.6 IS http://f-number.com/2009/09/07/canon-ef-s-18-135mm-f3-5-5-6-is/ http://f-number.com/2009/09/07/canon-ef-s-18-135mm-f3-5-5-6-is/#comments Mon, 07 Sep 2009 12:53:48 +0000 f-number http://f-number.com/?p=220 A second lens introduced at the same time as the Canon EOS 7D DSLR is the EF-S 18-135mm f/3.5-5.6 IS.

Canon EF-S 18-135mm f/3.5-5.6 IS

This is an APS-C crop factor lens, with a 35mm equivalent focal range is 29-216mm.  Filter diameter is 67mm, overall weight is 455g.

More information at the Canon web site:
http://canon.com.au/products/cameras_lenses_accessories/standard_zoom_lenses/efs18-135mmf35-56IS.aspx

]]> http://f-number.com/2009/09/07/canon-ef-s-18-135mm-f3-5-5-6-is/feed/ 0 Canon EF-S 15-85mm f/3.5-5.6 IS USM http://f-number.com/2009/09/07/canon-ef-s-15-85mm-f3-5-5-6-is-usm/ http://f-number.com/2009/09/07/canon-ef-s-15-85mm-f3-5-5-6-is-usm/#comments Mon, 07 Sep 2009 12:43:46 +0000 f-number http://f-number.com/?p=215 In conjunction with the EOS 7D DSLR announcement, Canon has also introduced the new EF-S 15-85mm f/3.5-5.6 IS USM, an APS-C format zoom lens.

Canon EF-S 15-85mm f/3.5-5.6 IS USM

The lens has an effective 35mm equivalent focal range of 24-136mm.  Closest focusing distance is maintained at 0.35m throughout the entire zoom range.  Filter diameter is 72mm.

More information at the Canon web site:
http://canon.com.au/products/cameras_lenses_accessories/standard_zoom_lenses/efs15-85mmf35-56ISUSM.aspx

]]> http://f-number.com/2009/09/07/canon-ef-s-15-85mm-f3-5-5-6-is-usm/feed/ 0 Leica Apo-Elmar-S 180 mm f/3.5 CS http://f-number.com/2009/08/22/leica-apo-elmar-s-1-3-5-180-mm-cs/ http://f-number.com/2009/08/22/leica-apo-elmar-s-1-3-5-180-mm-cs/#comments Sat, 22 Aug 2009 00:46:03 +0000 f-number http://f-number.com/?p=186 Completing the initial line-up of the Leica S-System is the Apo-Elmar-S 180 mm telephoto lens, with a fast maximum aperture of f/3.5.  The lens has minimum focusing distance of 1.5 metre.

The lens has an equivalent 35mm-format focal length of 144mm.

LEICA APO-ELMAR-S 180 mm F/3.5 CS

Specification at a glance:

  • Lenses/groups: 9/7
  • Image angle (diagonal, horizontal, vertical): approx. 17°, 14°, 9.5°, approx. corresponds to 144mm in 35mm format
  • Aperture range: f/3.5 – 32
  • Minimum focusing distance: 1.5m
  • Magnification: 1:7
  • Filter size: 72mm
  • Dimension (diameter/length): 88 mm/151 mm
  • Weight: 1150g

More information at the Leica web site:
http://www.s.leica-camera.com/apo-elmar-s-1-3-5-180-mm-cs/?lang=en

]]> http://f-number.com/2009/08/22/leica-apo-elmar-s-1-3-5-180-mm-cs/feed/ 0