An orifice. It often refers to an opening in which light is allowed to pass in optical systems such as cameras and lasers. See f-stop and numerical aperture.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Olympus SP-570 UZ
- Photos and image samples:Olympus SP-570 UZOnce you mention the Olympus SP-570's 20x zoom lens, the rest of the camera's feature set seems almost superfluous; with an atypically wide-angle lens for any class of single-body cameras plus an exceptionally long telephoto view, the lens is the raison d'être for the camera....
- Product reviews 2008-08-22
- Canon Vixia HF11
- Creating a product line where once there was but one, Canon follows up its flash-based, high-definition Vixia HF10 AVCHD camcorder with a slightly more powerful model, the HF11. Like its sibling, the HF11 is a sleek black compact model with a well-rounded feature set, great video, and excellent performance, and...
- Product reviews 2008-08-07
- Nikon D3 (body only)
- Photos:Nikon D3For years, Nikon users had been asking their favored camera maker for a dSLR with a full-frame sensor (the same size as a 35mm frame of film). Finally, Nikon caved, delivering the 12-megapixel D3; the result is a camera that reaches new heights in imaging with extremely low noise...
- Product reviews 2008-07-31
- News to know: 64-bit Windows; JavaFX; Net neutrality; Apple
- Notable headlines: Ed Bott: Suddenly, 64-bit Windows is mainstream Dear Adobe, can we please have a 64-bit Flash player? Larry Dignan: JavaFX SDK preview launches: Can Sun play the RIA game? Mary Jo Foley: Microsoft launches new search...
- Blog posts 2008-07-31
- Aperture 2.1.1 feature: better manners on import
- I just updated to Aperture 2.1.1 and noticed a couple of things. First is the expected change from Dot-Mac galleries to the MobileMe Galley, evidenced by the little cloud icon under projects (I find the little cloud icon kind of cute, personally). The second is a change...
- Blog posts 2008-07-30
- Nikon AF-S DX VR 18-200mm f3.5-5.6G IF-ED
- One of the blessings of an SLR can also be a curse: having to choose which lenses to carry, which means finding the right balance between weight and bulk, and having the focal lengths you need. The Nikon AF-S DX VR 18-200mm f3.5-5.6 G IF ED lens offers Nikon shooters...
- Product reviews 2008-07-21
- MobileMe
- MobileMe is the successor to .Mac, Apple's subscription service for publishing photos and other personal content to the Web. It's expected to be released this week along with the 3G-enabled iPhone.Apple will automatically migrate .Mac users to the new service starting at 6 p.m. Pacific on July 9, when accounts...
- Product reviews 2008-07-09
- Aperture (trial)
- Aperture 2 gives photographers incredible tools to manage massive libraries, speed through photo edits, make essential image adjustments, and deliver photos online and in print using one simple, integrated workflow. Whether you shoot RAW or JPEG, Aperture lets you get the most out of your photography. This version is the...
- Software downloads 2008-07-02
- Canon EF-S 55-250mm f4.0-5.6 IS lens
- Available for less than $300, the Canon EF-S 55-250mm f4-5.6 IS is a lightweight, affordable first or second lens to complement your entry-level or midrange digital SLR. With its 400mm-equivalent focal length, you get the reach and angle of view desirable for shooting portraits and sports, or just to bring...
- Product reviews 2008-06-27
- Nikon AF-S DX 16-85mm f3.5-5.6 G ED VR lens
- For those looking to go beyond what a kit lens has to offer their Nikon dSLR, there's Nikon's AF-S DX 16-85mm f3.5-5.6 G ED VR. Compatible with all Nikon DX digital SLRs including the D300, D60, and D40, there's an awful lot to decipher in its name. geekbox...
- Product reviews 2008-06-11
- ApertureEdit (zip)
- Features 11 different modules for more than 4000 effects. The modules can be combined together in one step. Effects can be applied on one or a set of images right inside Apple Aperture. Powerful Image DeNoising, Image ReFocusing, Image Beautifier, Correct Lens Distortion, Grid Distortion, Frame or Edge your images...
- Software downloads 2008-06-10
- Nikon Coolpix P80
- For megazoom shooters, the Nikon Coolpix P80's 18x zoom, 27-486mm-equivalent f/2.8-4.5 lens likely sits at the top of the list of the P80's attractions. The range provides a good combination of wide-angle and telephoto views at relatively wide maximum aperture values. Nikon supports the lens with an agreeable and functional...
- Product reviews 2008-06-09
- Review: OWC Mercury On-The-Go 500GB portable HDD
- Other World Computing makes my favorite 2.5-inch hard drive enclosures, bar none. Their Mercury On-The-Go cases are killer because they're made of clear Lucite so that you can instantly tell which drive is inside just by looking at them. I know, I know, stickies work too, but stickies come off...
- Blog posts 2008-06-05
- Canon EF-S 18-55mm IS kit lens
- The Canon EF-S 18-55mm IS lens adds image stabilization to the company's older kit lens, though otherwise it and its predecessor are basically the same. It's compatible with all Canon EF-S digital camera bodies, such as the EOS Rebel XSi and EOS 40D, but it won't fit on the EOS...
- Product reviews 2008-06-02
- Pentax K20D (body only)
- Photo gallery:Pentax K20DIn case you haven't been paying close attention to the digital SLR market lately, there's been a shift toward CMOS sensors. Though Pentax has stuck with CCD for its entry-level K200D SLR, they have moved to a 14.6-megapixel CMOS chip in their new flagship K20D. That puts it...
- Product reviews 2008-05-28
- Apple releases Mac OS 10.5.3; includes Google contact sync (updated)
- Apple today released Mac OS 10.5.3 via Software Update advisory. The 10.5.3 Combo Update weighs in at 536MB while the regular 10.5.3 Update is 420MB. The 10.5.3 Update is recommended for all users running Mac OS X Leopard and includes general operating system fixes that enhance the...
- Blog posts 2008-05-28
- Psystar offers 13 non-Apple Software Updates
- Yesterday, Mac cloner announced a series of Software Updates for their Open Computer: Safe updates, as well as bug fixes and workarounds, are now available in our Support section. We have released a couple of fixes for things like Time Machine as well as a fix for DHCP issues...
- Blog posts 2008-05-21
- Aperture Assistant (zip)
- An automation helper for Apples Aperture application. It allows you to easily set up complex tasks and workflows by putting together visual flowcharts. Some of the main features: export images using different presets depending on metadata/ratings. Export to different folders depending on metadata. Export echoing Apertures internal organizational structure. Open...
- Software downloads 2008-05-20
- Canon PowerShot SD890 IS
- Whether human or camera, it's always hard following in the footsteps of a popular sibling, and the near-universally well-liked Canon PowerShot SD850 IS is a harder act to follow than most. Rather than simply bump up the resolution and zoom range for the SD890 IS--it's now 10 megapixels, up from...
- Product reviews 2008-05-14
- VMware updates Fusion
- The company on Wednesday evening announced a free update, Fusion 1.1.2, which adds support for Time Machine backup of virtual machines as well as Windows XP SP3 Boot Camp partitions. According to a post on the VMware company blog, the maintenance update also fixes an issue when...
- Blog posts 2008-04-24
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