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Autofocus - Wikipedia, the free encyclopedia The first mass-produced autofocus camera was the Konica C35 AF, a simple point and shoot model released in 1977. The Polaroid SX-70 was the first autofocus Single-lens reflex camera, released in 1978. The Minolta Maxxum 7000, released in 1985, was the first SLR with an integrated autofocus system, meaning both the AF sensors and the drive motor were housed in the camera body. en.wikipedia.org /wiki/Autofocus   (983 words)

Canon T80 - Wikipedia, the free encyclopedia The autofocus system in the T80 worked in the same manner as the focus assist system built into the earlier AL-1. The autofocus lenses contained a motor, and electrical contacts in the lens mount connected this motor to the camera's circuits. Except for its autofocus capability, the T80 was very similar to the earlier T70, with four programmed scene modes in addition to regular Program auto-exposure (AE). en.wikipedia.org /wiki/Canon_T80   (584 words)

AutoFocus - Internet Algorithmics Lab - University of California, San Diego   (Site not responding. Last check: 2007-11-01) AutoFocus is a traffic analysis and visualization tool that describes the traffic mix of a link through textual reports and time series plots. Both types of input can be sampled, but AutoFocus only compensates for the sampling in the reports that measure the traffic in bytes and packets, and not in those measuring the traffic in flows (to avoid giving biased estimates). AutoFocus is available for commercial use under copyright license from The Regents of the University of California. ial.ucsd.edu /AutoFocus   (272 words)

AutoFocus, Perform Powerful Image DeNoise, DeBlur, Sharpening with the latest Digital Techniques AutoFocus has one of the strongest Noise or Grain cleaner of the industry. AutoFocus is straight to the point without novice or expert mode, simple slider, efficient pan/zoom and large before and after view lets you decide in one instant. HumanSoft AutoFocus will let you preview your image and examine very fast within a large preview window at the pixel level what is the level of denoise and deblur you wish to apply. www.humansoftware.com /pages1200/AutoFocus/HSautofocus0.html   (637 words)

1Ds Autofocus Tips The 45-point autofocus system of the 1Ds is fast and usually accurate, but at times it will lock focus on something other than the intended center of focus, especially if there is an obstruction in front of the main subject. In that situation, autofocus can still be used, but it needs to be limited to a single focus sensor so that the camera knows exactly what the intended subject is. In other situations, manual focus may be necessary to achieve the desired effect. Not having autofocus tied to the shutter button takes a little getting used to, but the control and flexibility it offers is well worth the time it takes to learn. visual-vacations.com /Photography/1ds_autofocus_tips.htm   (593 words)

Shutterbug: Autofocus Problem Solving A full 15 years have passed since the first commercially viable autofocus SLR was introduced (the Maxxum 7000) and the technology has been improved significantly since then. This will be more effective than trying to autofocus on an athlete who will suddenly pop over the crest of a hill, for example. Autofocus is not perfect and it cannot always be left to its own devices. www.shutterbug.net /techniques/pro_techniques/0101sb_autofocus/index.html   (2086 words)

AutoFocus, Perform Powerful Image DeNoise, DeBlur, Sharpening with the latest Digital Techniques AutoFocus plug-in is one of the most powerful DeNoising tool of the industry. AutoFocus ‘DeNoise’ is very powerful because it preserves edges on the image, most denoising tool will blur edges (try a simple median filter to see this behavior). HumanSoft AutoFocus will let you preview your image and examine very fast within a large preview window at the pixel level what is the level of denoise you wish to apply. www.humansoftware.com /pages1200/AutoFocus/HSautofocus111.html   (326 words)

Welcome to HomeP@ge: The Cincinnati Enquirer's Technology Section! Autofocus cameras had a common problem (for pros): they did not focus quickly and accurately in all situations. Autofocus can also be used, selectively, to draw attention to specific areas of a scene for more creative pictures. If you leave autofocus turned on, your camera may focus behind the child (if he or she is not in the center of the frame); or the camera may "freeze" when it can't find the fast-moving focus point, which will result in a missed picture. www.enquirer.com /homepage/stories/083100_autofocus.html   (518 words)

Ed Robinson - Autofocus cameras underwater - Exploring the Nikon 8008&N90 First was to use autofocus to help me focus faster as I scramble to capture humpback whales breach at unpredictable distances from the boat. The problem with autofocus is that it needs to see the lines or patterns in the subject, and it needs to be close enough to the correct focus to even see the subject. I also feel autofocus should be limited to normal and telephoto lenses (35mm and up.) Wide angle lenses do not have the critical focus problems of longer lenses, and it is common to place the main subject in wide angle pictures off center, which will throw the subject focus off. www.mauiscuba.com /autofocs.htm   (1583 words)

Autofocus: Camera System: Glossary: Learn: Digital Photography Review In autofocus mode the camera automatically focuses on the subject in the focus area in the center of the LCD/viewfinder. Many prosumer and all professional digital cameras allow you to select additional autofocus areas which are indicated on the LCD/viewfinder. Autofocus is usually based on detecting contrast and therefore works best on contrasty subjects and less well in low light conditions, in which case the use of an AF assist lamp is very useful. www.dpreview.com /learn/key=autofocus   (204 words)

Howstuffworks "How Autofocus Cameras Work" Passive autofocus, commonly found on single-lens reflex (SLR) autofocus cameras, determines the distance to the subject by computer analysis of the image itself. There is no distance-to-subject limitation with passive autofocus like there is with the infrared beam of an active autofocus system. When you hold the camera in the horizontal position, the passive autofocus system will have a hard time with a boat on the horizon but no problem with a flagpole or any other vertical detail. electronics.howstuffworks.com /autofocus3.htm   (621 words)

Autofocus Overview To activate autofocus, point the camera to your subject and press the shutter release button halfway down. Because the cage is relatively small and the background is quite complex, the autofocus system is confused and focuses incorrectly, and, as a result, the main subject (i.e. Autofocus cameras are not always very smart and may be fooled by many strange situations (e.g. www.cs.mtu.edu /~shene/DigiCam/User-Guide/995/AUTO-FOCUS/AF-overview.html   (1369 words)

creativepro.com - Human Software Introduces AutoFocus v1 AutoFocus plug-in is one of the most powerful DeNoising tool of the industry, because it makes an excellent work at preserving edges on the image. AutoFocus is very affordably-priced, very easy to learn and perfect to fine tune all kind of works. AutoFocus is a very important tool in the plug-in arsenal of any professional working on digital images. www.creativepro.com /story/news/20015.html   (860 words)

Canon EOS Forum: Canon Ultrasonic AutoFocus Problem I have a 24-85 Ultrasonic lens, and when I occasionally switch to autofocus mode, images are typically soft. Autofocus has been around longer than digital photography, yet I see you use a 20D. To be honest with all of you, I rarely if ever use autofocus, and prefer to focus carefully on the eyes. www.photo.net /bboard/q-and-a-fetch-msg?msg_id=00GQMC   (950 words)

Camera Equipment Forum: Leica and non-autofocus It would probably be a fl eye for them to throw a second rate autofocus system on what they consider "world class" cameras. Some say that one of the reason's Contax held out on auto-focus was because they felt that the high precision optics would be defeated by the loose tolerances needed for an auto focus system. And I think that they probably don't think that licensing it from someone else will be compelling for their customer base - because it would result in a system with the mechanical feel that's the same as whomever they've licensed - and their customers wouldn't buy it. www.photo.net /bboard/q-and-a-fetch-msg?msg_id=00GznF   (877 words)

Autofocus Problems Page   (Site not responding. Last check: 2007-11-01) Using an autofocus camera with central AF sensor(s) on a tripod is a potential pain in the neck, due to the need to center the subject to focus, then move off to compose the shot (e.g., rule of thirds). Autofocus systems also have problems at apertures above f/4 on many cameras, and above f/5.6 on most AF cameras is problematic with low contrast subjects in dim light too. Autofocus is just an automated split image rangefinder with all the same problems as focusing by eye, with the added liabilities of being less sensitive and accurate than manual focusing. medfmt.8k.com /third/af.html   (18731 words)

autofocus - Search Results - MSN Encarta autofocus, diaphragm, exposure meter, filter, fisheye lens, flash, lens, lens cap, rangefinder, shutter, telephoto lens, viewfinder, zoom lens, light... description, lighting for autofocus cameras, picture of an autofocus camera Autofocus cameras use electronics and a small computer processor to automatically sample the distance between camera and subject and from this... ca.encarta.msn.com /autofocus.html   (73 words)

Autofocus troubleshooting by Thom Hogan It seems a lot of folk have been reporting autofocus problems on the forums lately (very few of which turn out to be real component failures), so I'm going to provide you a troubleshooting checklist to run through before you run off screaming to the manufacturer. Read the autofocus sections in my books (or the extended discussions I've produced in Nikon Digital SLR Report) carefully--many settings interact and not all autofocus sensors are equal. Then it's possible that the autofocus sensor positions are slightly off from where they should be and the camera needs to go back to Nikon for adjustment (send the photos you shot!). www.bythom.com /autofocus.htm   (885 words)

Dan Heller's Movie Review of "Autofocus" Paul Schrader's film, Autofocus, is the story of Bob Crane (played by Greg Kinnear), who had the title character in the hit TV series, "Hogan's Heroes" in the late 1960's. The interesting thing about the real-life story of Bob Crane is the fact that he was brutally murdered in 1978 by a killer who was never convicted, even though everyone knew who it was. If the movie were supposed to be just a portrait of man, it should have expanded on other sides of Crane to flesh him out as a complete character. www.danheller.com /Movies/autofocus.html   (597 words)

The Making Of Autofocus AutoFocus is officially on the cutting room floor and is currently getting edited by Elliot at the ACL production headquarters on Maui. The crew still remains in DR for now but will continue to film as Dre will hook up with Slezy in a few days and film at an undisclosed location to be revealed shortly. Look for the AutoFocus trailer to be released soon as we have now shot well over 80 hours of footage which will ultimately get whittled down to only the best shots making the final cut. www.autofocusdvd.com   (971 words)

D2x Review - Actual width of the autofocus sensors - A Nikonians How To Article The Nikon D2x has a total of 11 autofocus sensors, as represented by the brackets in the viewfinder. Since there is no contrast in a blank wall, the autofocus will simply rack in and out and be unable to focus. You will find that autofocus happens well outside of each bracket, and reveals the true width of the AF sensor on your camera. www.nikonians.org /nikon/d2x_sensor_size   (972 words)

Nikon D100 Review by Thom Hogan The autofocus direction pad is small and stiff compared to the one on the N80. The shutter is the N80's, the viewfinder technology is the N80's, the autofocus and metering system is the N80's, the control interface is mostly the N80's (with some modest changes we'll get to), the internal flash is the N80's. The autofocus system is fast (especially on central subjects), and features five sensors (CAM 900) that can track rapidly moving objects, or direct autofocus to a specific area of the frame. www.bythom.com /D100.htm   (6193 words)

Autofocus Homepage From this page you have access to all information available about the AutoFocus tool, a CASE tool for the development of distributed systems, which is currently being developed at the Chair of Prof. AutoFocus is based on a practical course in software engineering in summer 1996 and was launched by a team of students under advice of a team coordinator. A rapid prototyping and simulation environment for AutoFocus, implemented during the Softwaretechnik-Praktikum 1997. autofocus.informatik.tu-muenchen.de /index-e.html   (231 words)

AutoFocusChicago.com - About Us AutoFocus is a member of Target Media Partners, one of the largest independent publishers of classified and specialty advertising products in the United States. AutoFocus' dedication is reflected in the success experienced by both the buyer and the seller using these publications. AutoFocus and CycleFocus magazines are located in racks in numerous Chicagoland locations such as Jewel, Dominick's, Blockbuster, 7-Eleven, Bally's Health Club, K-Mart, Wal-Mart, and other participating restaurants, gas stations and convenience stores. www.autofocuschicago.com /about.aspx   (399 words)

Betterphoto.com Photography Q&A - Manual or Autofocus? As Steve mentions, it is possible to start with manual focus lenses and move later to autofocus within Nikon's system. Some of their autofocus bodies are easier to use the Nikon AI/AIS manual focus lenses with than others. Neither manual nor autofocus gives you any better "sharpness." That's a quality of the lens, and ultimately you control lens focusing (albeit indirectly with auto-focusing systems). www.betterphoto.com /forms/QnADetail.asp?threadID=10755   (517 words)

Understanding Nikon Multi-CAM 2000 Autofocus - DigitalDarrell.com   (Site not responding. Last check: 2007-11-01) Using these technologies, the camera detects that the subject is moving in the few milliseconds that autofocus is in action. Most photographers are perfectly happy to use the simplest autofocus setting, “Single Area AF.” With this setting your camera locks on to slow moving and static subjects using a single focus area of the eleven available in the D2x. The camera's autofocus system is contrast based, and if contrast gets weak, or everything is of similar contrast, autofocus does not work well. www.cleanimages.com /Article-UnderstandingNikonMultiCAM2000AF.asp   (6055 words)

2051A001 Canon EOS-3 35mm Autofocus SLR Camera Body U.S.A. Canon's exclusive eye-controlled autofocus system, combined with CMOS sensor technology allowing for an unprecedented 45 focusing points, will undoubtedly revolutionise the creative process of making photographs. All focusing points are linked directly to Canon's exclusive eye-controlled autofocus system and a 21-zone evaluative metering system, thus providing sharp focus and perfect exposure instantly, regardless of subject position. As with the Canon Elan IIE, eye-controlled autofocus in the EOS-3 is functional in both horizontal and vertical camera positions. www.adorama.com /CA3.html   (871 words)

Canon EOS Rebel T2 35mm SLR Autofocus Camera Kit with Canon 28-90mm f/4-5.6 EF III Lens - 9426A002 w/ FREE UPS Canon EOS Rebel T2 35mm SLR Autofocus Camera replaces the Rebel Ti model and includes improvements such as faster shutter speeds, better auto focusing, and for the first time custom functions that are user friendly and appropriate for a wide range of shooting environments. A four-position keypad on the back of the camera also makes autofocus point selection more intuitive and faster, providing overall better performance for users. The E-TTL II flash system, which is compatible with most EF lenses, consistently produces accurate flash exposures, even when shooting light, dark or highly reflective subjects. www.opticsplanet.net /canon-eos-rebel-t2-35mm-slr-autofocus-camera.html   (952 words)

CMOS Image Sensor features embedded autofocus control., OmniVision Technologies, In Integrated autofocus functions work with integrated microcontroller that can directly control various autofocus motors through GPIO pads or serial bus. The OV2645's advanced autofocus functions work with an integrated microcontroller that can directly control a variety of autofocus motors through its GPIO pads or serial bus. This enables a very small, inexpensive, yet highly advanced single-chip autofocus camera module, in the range of 10x10mm, which is about 30% smaller than any competitive solutions available. news.thomasnet.com /fullstory/476479/2462   (779 words)

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