This MedLibrary.org supplementary page on Canon MP-E 65mm f/2.8 1-5x Macro lens is provided directly from the open source Wikipedia as a service to our readers. Please see the note below on authorship of this content, as well as the Wikipedia usage guidelines. To search for other content from our encyclopedia supplement, please use the form below:
Related Sponsors
| MP-E 65mm Macro f/2.8 | |
 The lens at 1x magnification, mounted on its tripod collar. |
|
| Key features | |
|---|---|
| Maker: | Canon |
| Image stabilization: |  No |
| Ultrasonic motor: | No |
| Short back focus: | No |
| Macro capable: |  Yes |
| Unique features: | 5:1 macro |
| Application: | Macro, magnification |
| Technical data | |
| Type: | Prime |
| Focal length: | 65mm |
| Frame coverage: | Full frame |
| Aperture (max/min): | f/2.8-f/16 |
| Construction: | 8 groups / 10 elements |
| # Diaphragm blades: | 6 |
| Close focus distance: | 240mm / 9.4in |
| Max. magnification: | 5:1 |
| Physical | |
| Max. diameter: | 3.2in / 81mm |
| Max. length: | 3.9in / 98mm |
| Weight: | 710g / 25.0oz |
| Filter diameter: | 58mm |
| Accessories | |
| Lens hood: | 0028T225 |
| Case: | LP1216 |
| Angle of view | |
| Horizontal: | 15°40' |
| Vertical: | 10°35' |
| Diagonal: | 18°40' |
| History | |
| Retail info | |
The MP-E 65mm Macro f/2.8 is a photographic lens manufactured by Canon for use on the EOS photographic system. It is a manual focus lens for the EF mount.
This lens is specifically designed for macro photography, capable of generating full frame images on the sensor up to five times the size of the subject. It exhibits an extremely low depth of field, a maximum of 2.24mm at f/16 at 1x magnification, and a minimum of 0.048mm at f/2.8 at 5x magnification. It is sensitive to faint vibrations, with slight breezes or imperceptible movements having potentially significant effects on image focus. Nonetheless, handheld photography with this lens can produce images with good focus.
The technical specifications indicate an aperture range of f/2.8 to f/16, which is the value displayed by the camera body when the focus is set to infinity. However, the MP-E 65mm lens cannot be set to infinity,1 so its effective f-number depends on the magnification ratio chosen, and is calculated as:
Effective f-number = f-number x (magnification + 1)
For example, at 3x magnification with a listed aperture of f/8, the effective f-number is 8 x (3+1) = f/32. Hence, the lens may have an effective f-number of f/5.6 at 1x magnification to f/96 at 5x magnification. Magnification is analogue, not discrete, so fractional magnification values (for example, 2.3x) are possible. The lens circuitry does not communicate the chosen magnification ratio to the camera body, so it will not be recorded in the image metadata.
Canon recommends using either aperture priority or manual mode when using this lens.1
References
External links
- MP-E 65mm Macro f/2.8 technical specifications at Canon Europe website
|
|||||||||||||||||||||||||||||||||||||||||
 |
This photography-related article is a stub. You can help Wikipedia by expanding it. |
Wikipedia content modification information:
- This page was last modified on 10 November 2008, at 18:54.
Wikipedia Authorship and Review
Wikipedia content provided here is not reviewed directly by MedLibrary.org. Wikipedia content is authored by an open community of volunteers and is not produced by or in any way affiliated with MedLibrary.org.
Wikipedia Usage Guidelines
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Canon MP-E 65mm f/2.8 1-5x Macro lens".
The URL for this specific entry is:
All Wikipedia text is available under the terms of the GNU Free Documentation License. (See Copyrights for details). Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc.