View allAll Photos Tagged AutoFocus
Camera used to take photo: Polaroid SX-70 Model 2, Polaroid 779 film (expired 2004) w/ ND pack filter
Here is my beloved Polaroid SX-70 AutoFocus (or manual if you prefer to switch AF off) camera. It has three shots left of original Polaroid Time Zero film in it... I have shot a couple photos with that film and the results are nice, flames included! :)
Nikon D3300 Viewfinder - Autofocus
Example image from Nikon D3300 Experience e-book guide to the D3300
The aircraft, called 'Twilight Tear', was based at Duxford with the USAAF 78th Fighter Group towards the end of the Second World War. The personal aircraft of young American pilot Lt Hubert 'Bill' Davis, who flew the bulk of his 35 combat missions and achieved three aerial victories in her, Twilight Tear's survival is remarkable in that, at the end of hostilities, most of the Groups' aircraft were flown to a depot near Blackpool for scrap.
The autofocus system includes a tracking function - that works pretty good for a compact camera, the car was moving with app. 40 km/h towards me and was tracked precisely. This function only needs good framing, otherwise the tracking point hunts through the whole focus area ignoring moving object. But it´s a nice change after many, many compacts that were completely unable to capture moving objects.
Nikon Lite Touch Zoom 70W AF
Used condition
AF work
Flashlight work
Zoom in/out work
Shutter release work
*not tested through shooting
At about 8 o'clock is the slotted connector which autofocus K-mount bodies use to drive the focus ring.
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This is an original work by Ross Orr (Voxphoto) and is licensed as creative commons BY-NC-ND 2.0.
Type of Camera Integral-motor autofocus 35mm single lens reflex.
Picture Format 24 x 36mm [standard 35mm (135) film format]
Lens Mount Nikon F mount
Lens More than 70 Nikkor and Series E lenses available.
Focus Modes Dual autofocus modes (Single servo and Continuous servo) focus assist and manual focusing.
Autofocus Detection System TTL phase detection system using 96 CCD's.
Autofocus Detection Range Approx. EV 4 to EV 17 using lenses f:2.8 or faster; EV 5 to EV 18 using lenses f:4.5 or faster but slower than f:2.8.
Autofocus Lock Single Servo AF - Possible once focus LED is lit and shutter release remains slightly depressed; Continuous Servo AF - focus detection continues as long as shutter release remains partially depressed.
Focus Assist Available in manual focus mode with an AF Nikkor, Nikkor or Series E lens with a maximum aperture of f:4.5 or faster
Exposure Metering Light intensity feedback measurement (for P DUAL, P HI and A), TTL full aperture centerweighted measurement (for manual exposure) employs one silicone photo diode (SPD).
Exposure Meter Switch Activated by setting film advance mode selector at S or C and lightly pressing shutter release button, remains on for approx. 8 sec. after releasing shutter release button.
Metering Range (at ISO 100 with f/1.4 lens)EV 1 to EV19
Exposure Modes Three Program (dual, normal and high speed) auto exposure modes, Auto, Aperture-Priority Auto and Manual
Programmed Auto Exposure ControlChoose from 3 modes. Camera sets both shutter speed and lens aperture automatically.
Aperture-Priority Auto Exposure ControlShutter speed automatically selected to match manually set aperture
Manual Exposure Control Both aperture and shutter speed are set manually
Shutter Electromagnetically controlled vertical-travel focal-plane shutter
Shutter Speeds Stepless from 1/2000 to 1 sec. in P DUAL, P, P HI and A auto exposure modes. Lithium niobate oscillator-controlled speeds from 1/2000 to 1 sec on manual; electromagnetically controlled Bulb setting is provided
Viewfinder Fixed eyelevel pentaprism high-eyepoint type; 0.85X magnification with 50mm lens set at infinity; approx. 92% frame coverage
Eyepiece cover Model DK-5 prevents stray light from entering eyepiece
Focusing Screen Nikon type B clear matte with central focus brackets, 12 mm circle denotes center weighted metering area; changeable with type E or J focusing screens.
Viewfinder Information Focus indicator LEDs include focus not possible warning, in-focus indication, focus-to-right and focus-to-left arrows; exposure indicator LEDs include shutter speed LEDs, over and under-exposure warning LED's; ready light comes on when Nikon dedicated flash is used.
P DUAL, P and P HI modes LED shows shutter speed selected by camera; top warning light blinks for overexposure, bottom warning LED indicates underexposure, top and bottom LEDs blink to indicate proper exposure.
A mode LED shows shutter speed automatically selected by camera, top or bottom warning LEDs blink to inducate over or under - exposure.
Manual mode Non-blinking LED shows shutter speed set on dial, blinking LED shows shutter speed for correct exposure; 2 blinking LEDs show intermediate shutter speed; no LED in B.
Auto Exposure Lock Operates in P DUAL, P, P HI, and A modes, holding button in locks exposure.
Exposure Compensation +/- 2 EV compensation (in 1/3 increments) possible with compensation dial; when film speed ring is set at DX with ISO 5000 DX coded film, exposure compensation is possible from - 1 1/3 to +2; with film speed ring set to ISO 1600, -1 to +2 is possible; at ISO 3200 only + compensation is possible; at ISO 25, -2 to +1 is possible; at ISO 12, only - compensation is possible.
Film Speed Range ISO 25 to 5000 for DX-coded film; ISO 12 to 3200 can be manually set for non-DX coded film.
Film Speed Setting At DX position, automatically set to ISO speed of DX-coded film used; manual setting possible
Film Loading Film automatically advances to first frame when shutter release button is depressed once
Film Advance In single-frame mode, film automatically advances one frame when shutter is released; in continuous shooting mode, shots are taken as long as shutter release button is depressed; shooting speed is approx. 1.7 fps to approx. 2.5 fps depending on focus mode in use.
Remote Film Rewind Use optional MC-12A.
Audible Warning Alarm With switch on, beeps; (1) when non-DX coded film is used with film speed dial set at DX;(2) when DX contacts require cleaning; (3) for under and over-exposure and possible picture blur in auto exposure modes; (4) at end of film roll; (5) during self timer operation.
Red indicator Lamp Blinks; (1) when non-DX coded film is used with film speed dial set at DX;(2) when DX contacts require cleaning; (3) for under and over-exposure and possible picture blur in auto exposure modes; (4) when shutter is released.
Frame Counter Additive type; counts back while film is being rewound
Self-timer Electronically controlled 10 sec. delay; blinking LED and beep sound indicates self-timer operation; cancellable
Reflex Mirror Automatic, instant-return type
Camera Back Hinged back with film cartridge confirmation and film advance indicator; changeable with Data Back MF-19.
Accessory Shoe Standard ISO-type hot-shoe contact; ready-light contact, TTL flash contact, monitor contact
Flash Synchronization Up to 1/125 sec. with electronic flash.
Flash Ready Light Lights up when Nikon dedicated flash is ready
Autofocus Flash Photography Possible only with Nikon SB-20.
Power Source Four 1.5V AAA batteries; with Nikon AA battery holder MB-3, four 1.5V AA batteries can be used.
Dimensions (W x H x D) Approx. 5.8 x 3.8 x 2.1 in.
Weight (without batteries) Approx. 21.3 oz.
Nikon D850 - simulated view of the D850 viewfinder, showing the area of the 12mm Center-Weighted Metering circle, and Single AF Point.
Example image from Nikon D850 Experience user guide to the D850.
Forgot to turn off autofocus for this time lapse of the moon passing behind some twigs, but the effect was kind of cool.
Click the HD button in the lower right to watch in higher quality.
I has more timelapses if you like this one.
FRG 041612B
taken with Canon EOS Rebel XSi
Canon EF-S 60 mm macro lens
Rosetta Gardens, Toronto
April 16, 2012
Pentax-F 50/1.7 test shots using autofocus through viewfinder. With Pentax KP and Circular Polarizer.
A close-up view of the light sensor employed by the phase detection autofocus system in the DSLR camera I took apart after its shutter failed. The horizontal and vertical rows of dark rectangles are the light-sensitive elements. Horizontal rows detect vertical edges in the scene, and vertical rows detect horizontal edges.
The 5 mm scale bar drawn at the bottom of the frame shows the size of the sensor chip. The resolution of the 4k version of this photo is about 3 µm per pixel.
The Canon T80 was the company's only autofocus camera that used the FD lens mount. The T80 was introduced right before the wildly popular EOS autofocus series and was only available for one year: 1985-86. I would guess (but don't know) that Canon probably had too much engineering money put into this type of hybrid camera/lens system not to at least give it a try in the marketplace.
Only three lenses were available, a 50mm f/1.8 normal; a 35-70mm zoom and the 75-200mm zoom. Again, these are FD-mount lenses, completely incompatible with the EF series we all know today. My T80 came with the normal, I found this guy today in a thrift shop. Now all that's left is the short zoom.
Optically, this zoom is typical for its era. The f/4.5 maximum lens opening matched offerings from their competitor's lines. A macro switch near the lens mount base gave this lens extra utility for close-ups.
The autofocus apparatus on the side of the lens adds considerable bulk to the whole unit. Focus is not very swift and you can hear the motor loudly straining to bring the lens elements into place. This is not a camera to use in quiet areas.
The viewfinder of the camera does have a cross-hair to aid focusing if you need to use the lens manually. A switch on top of the lens allows you to set manual or autofocus operation. Power for the autofocus system came from the camera's internal batteries.
To me, the camera and the lenses comprise a tipping point in photographic technology. The T80 (and more advanced manual focus sibling the T90) represented the limit in what could be done to extend the life of a well-made but aging lens mount design.
Nikon Lite Touch Zoom 70W AF
Used condition
AF work
Flashlight work
Zoom in/out work
Shutter release work
*not tested through shooting
Autofocus with the A9 in the AF-C mode is quick, certain and accurate, but the initial focus acquisition with the older Sony 70-300mm lens does not feel as blazingly fast as the more pro lenses usually feel.
So I'm waiting to get my hands on either a Sony 70-200 f/2.8 or for a firmware upgrade for my Sigma MC-11 adapter, so I can use my Canon lenses with the A9.
Once focus is acquired, the tracking has been flawless. But I have not tested it with super fast subjects moving in random or erratic directions yet.
Nikon D90 camera, Sigma 150-500mm f/5-6.3 DG OS HSM APO Autofocus Lens, Sigma 2x EX DG APO Teleconverter, Orion TeleTrack GoTo Altazimuth Telescope Mount, 1/40” exposure, f/13, 1000mm (1520mm 35-mm equivalent focal length); Post-processing with Photoshop CS5.
This Popular Photography excerpt dates the introduction of the Konica C35 AF. It's interesting to see the Honeywell-provided autofocus module separately. The camera is otherwise an update to Konica's C35-EF.
While this is clearly not an SLR, it's included in our album "35mm SLRs Evolve" as a harbinger of the next revolution to come in SLR design.
As always, the male lion was just lying there. Hard to see and even harder to photograph through thick, dirty and scratched plastic windows. On top of that, I felt a bit rushed and relied on the autofocus of my camera. It only selected the grasses in front of the lion.
Autofocus for the masses, the Nikon F-401 is the entry-level addition to their new commercially successful autofocus camera (starting with the F-501). Known as the N4004 for the US Market, the camera is simple to operate. And it offers up full PSAM controls and traditional Nikon centre-weighted metering, making it alright to use, despite the painfully slow autofocus.
The full review drops in June 2021
Nikon F-401 - AF Nikkor 50mm 1:1.4D - FPP Film Love @ ASA-200
FPP D96 (Stock) 8:00 @ 20C
Scanner: Epson V700
Editor: Adobe Photoshop CC
Taken at Auer Dult, München/Munich, with my new Polaroid Land Camera Time-Zero SX-70 Autofocus on Polaroid 600 film.
Finally an autofocus lens on my Sony A7. I was able to buy this lens for half the price charged on the second-hand market. I was skeptical about the bokeh coming off this lens. New modern lenses would not be able to make special bokeh is often said. Still, I am very surprised at what I get to see here. Most shots are cropped to cut out the beautiful parts. With a 35mm lens and a 35cm MFD, there is often too much present when it comes to close focusing. Razor-sharp results are very easy to achieve with autofocus. Many reviews are praising this lens and mine as well.
Here's the K-mount lens to EOS mount adapter I got today, with the help of Kent. I took a few test shots with it. The whole thing is blogged here.