Lens Nikon Camera
| Powered by phpBay Pro |

what do numbers on 35 mm nikon camera lens mean?
I am confused by what all the numbers mean on a 35 mm nikon camera lens .. for example . .Nikon mount 28-75 2.8 tamron lens .. what do all the numbers mean and what is the difference .. this is very confusing .. thank you
OK I'll break it down for you, and I'll try to explain everything
So lets hold up our imaginary lens, the Nikon Mount 28-75 2.8 made by Tamron:
Nikon Mount: the technical name for this is called the "F-Mount" and has been in use by Nikon for many years, so you can get great deals on used older lenses
28-75: That is the "focal range" of the lens (in terms of millimeters). It is telling you how wide the pictures can be (28 mm in this case) and how zoomed in they can be (75 mm). Of course, that means that, on this particular lens, you can take pictures anywhere between 28 and 75 mm.
2.8: that is called the "ƒ-stop". This part is a little counter-intuitive, but the smaller the number, the bigger the aperture hole is. The aperture hole is what controls light amount of light entering the camera. So a little ƒ'ing math:
ƒ2.8 will let in more light than ƒ4, and ƒ4 will let in more light than ƒ5.6
However, there is a catch: the smaller the ƒ-stop is, the amount of the picture that will be in focus drops off quickly. So on a picture shot at ƒ2.8, there will be a very Shallow Depth of Field
[example: http://en.wikipedia.org/wiki/File:Shallow_Depth_of_Field_with_Bokeh.jpg ]
On the flipside, a picture shot at ƒ32 will have a much bigger Depth of Field [example: http://en.wikipedia.org/wiki/File:Jonquil_flowers_at_f32.jpg ] <-- that is the 28-75 tamron lens, but on a canon instead.
Tamron: the lens maker.
Hope that helps a little bit
Items Recently Purchased From This Site:
| Powered by phpBay Pro |
Best Posts
- Series Service Repair
- Battery Sony Ccd
- Replacement Lcd Screen
- Vision Waterproof Wireless
- Cover Parts Repair
- Zeiss Jena Tessar
- Telephoto Tele Lens
- Dual Charger Canon
- Top Cover Plate
- Jvc Minidv Digital
- Dock Insert Adapter
- Nikon Lens Cap
- Red Yellow Green
- Camera Parts Oem
- Camera Hood Petal
Categories
- Camcorder Accessories (973)
- Camera Parts (309)
- Film Cameras (375)
- Flashes (540)
- Lenses And Filters (2031)
- Updates (1)
Tags
Recently Added
- Off Camera Cord
- Magnetic Tele Lens
- Dome Diffuser Canon
- Tele Lens Fuji
- Charger Hitachi Dvd
- Flash Diffuser Metz
- Battery Canon Vixia
- Replacement Battery Pack
- Pro Wide Angle
- Nikon Lens Hoods
Calender
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| « Apr | ||||||
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 28 | 29 | 30 | 31 | |||
Archives
- April 2011 (5)
- March 2011 (154)
- February 2011 (170)
- January 2011 (164)
- December 2010 (181)
- November 2010 (168)
- October 2010 (213)
- September 2010 (167)
- August 2010 (155)
- July 2010 (171)
- June 2010 (167)
- May 2010 (173)
- April 2010 (174)
- March 2010 (168)
- February 2010 (82)
- January 2010 (75)
- December 2009 (81)
- November 2009 (84)
- October 2009 (88)
- September 2009 (86)
- August 2009 (80)
- July 2009 (83)
- June 2009 (80)
- May 2009 (77)
- April 2009 (90)
- March 2009 (90)
- February 2009 (37)
- January 2009 (30)
- December 2008 (47)
- November 2008 (53)
- October 2008 (44)
- September 2008 (36)
- August 2008 (33)
- July 2008 (47)
- June 2008 (51)
- May 2008 (30)
- April 2008 (30)
- March 2008 (30)
- February 2008 (43)
- January 2008 (45)
- December 2007 (42)
- November 2007 (30)
- October 2007 (39)
- September 2007 (32)
- August 2007 (42)
- July 2007 (44)
- June 2007 (41)
- May 2007 (44)
- April 2007 (34)
- March 2007 (47)
- February 2007 (40)
- January 2007 (12)






























































