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Cameras
Whether it's a photo of a new baby, a wedding or a day at the beach, cameras help us record and remember life's memories. Ask questions about the camera's history and function here.
6,430 Questions
Which shutter speed is not a full stop?
f/1, f/1.4, f/2, f/2.8, f/4, f/5.6, f/8, f/11, f/16, f/22, f/32 are the usual full stops in aperture. You could have a full stop difference between two half or thirds as well.
a full stop is when the light is halved or doubled between the two settings. so in shutter speeds if the time is close to doubled or halved its considered a stop so going from 1/30th to 1/60th would be a stop and the next nominal stop down would be 1/125th of a second.
What is the max trigger voltage that a Sony Alpha a100 camera can receve from a flash?
According to the Sony support rep that I spoke to the Maximum trigger voltage for my Alpha 350 is 60 Volts! I have an ancient soligor ring flash [AR-20T - early 1980's vintage] with a trigger voltage of 6.35, well within spec.s. Call Sony yourself at 1-800-222-7669 if you want to be sure, but expect them to first try to sell you their own hot shoe adapter ($179.00!). Anyway they told me 60 volts.
I think its the model
Where is wenda's camera in gobbling gluttons?
On the floor near the table with the "very tough dishes". It is next to a Waldo hat....
I saw a blue flash of light like a camera flash in the sky What was it?
It's possible it was what is called an Iridium Flare. [See related question]
There was one predicted for 20:23 on the 27th November at an altitude of 15o so it's quite possible that is what you saw.
See related question and link for more information.
Actually, that's 68 degrees F, and that's only for black & white film. Color runs at 100.4 degrees F--or 20 degrees C (B&W) and 38 degrees C (color). As to the rest of your question...the temperature you use isn't changed by the number of exposures on the roll.
How do you use the front camera of the dsi?
1) Switch on your DSI
2) Go to the DSI Camera
3) Go to Camera
4) Touch "Start" on the bottom screen.
5) Touch "Switch or press x" on the bottom screen.
Hope I Helped...
Emounders
Link01
Do web cameras produce analog video or digital video?
A web camera or "webcam" by definition produces digital video. An analog video camera would require some kind of analog to digital conversion in order to be used for the types of applications that webcams are used for.
What are the main differences between expensive and inexpensive digital cameras?
If you are new to digital photography, you don't need to purchase an expensive digital camera. Even if you do have experience using a digital camera, an expensive camera doesn't always guarantee a good shot. Most importantly, you need to learn the basics of photography and learn about exposure and light - learn how to take a good picture first. Then, you can buy a fancy camera with lots of bells and whistles.
Here are suggestions for what type of camera you might need and the features they may have:
Note: These are very high level suggestions. Some cameras may have more or fewer features in their respective price ranges.
- Inexpensive: (under $150) May or may not have an LCD screen, Use a lower-priced CMOS sensor, lower resolution, and good for e-mailing photos to friends and for fun if you are learning and new to photography.
- Mid-range ($150 to 900) This is a broad category.
Some cameras in the lower end of this category have the following features: may not have a zoom, have an autofocus, uses CCDs as opposed to small CMOS sensors, offer resolution from 1 or 1.3 megapixel, print good photos - up to 6 X 4. This range offers a lot for the "beginning" user.
The cameras in the higher end of this category have the following: 2 to 3 megapixel, print images up to 8 X 6, offer priority modes, zoom lenses and mini-movie features; optical viewfinder.
- High end ($900 +) High resolution CCDS that are 2 or 3 megapixels and above , TTL viewfinders, extensive controls and stabilized long zooms, 2 or 3 metering systems, more than one type of recording media, and compatibility with external flash units.
9-07-2006
Main differences?
Just a couple.......
Some settings : A for aperature priority. S for shutter priority. M for manual mode. Many others....
Also more megapixels make a difference. (more megs = bigger sizes of picture into prints)
Lens quality..
Type of batteries it takes.
How close you can get..
Shutter speed possibilities.
And a few more....
What are the main differences between expensive and inexpensive digital cameras?
- Sensor Size (Bigger = more $)
- The physical dimensions of the image sensor (not the number of pixels). Put simply, a larger sensor captures more information, improving image accuracy.
- Shutter Speed (Faster = more $)
- Faster shutter speeds can capture faster action.
- Features (More, Advanced = more $)
- (different per make and model)
- Image Format
- .JPG and .RAW are common examples. Formats like .RAW capture more color information, but at a larger file size.
- Larger file sizes require faster image processors in camera
- Optics (Better, Clearer = more $)
- Better optics (lenses) will focus light onto the sensor better, generally resulting in sharper images.
- Bigger sensor sizes typically need bigger lenses.
- ISO Performance (Less Grainy = more $)
- Many factors impact ISO performance
- Sensor Resolution
- This is the number of pixels captured by the sensor (example 10.1 megapixels).
- More is not always better, bigger sensor sizes handle higher resolutions better.
Yes,
The numerical amount of voltage and current produced (or consumed) by the solenoid is related to the "change in magnetic flux per unit time"
For example, consider a permanent magnet with a 0.2 T surface flux density and a coil with 100 turns and an ideal inductor core. Now the permanent magnet is moved from an infinite distance to touching the surface of the coil in a time dT= .1 seconds.
The max voltage produced across the coil will be equal to N*dI / dT, in this case 100*.2 / .1 = 200 V. Incidentally that is the peak voltage of a 120 volt RMS wave.
This effect relates to the dipole moment and magnetic inertia of a material. For example current carrying copper wire near an iron core will induce a large magnetic flux, in which a percentage of this material's free crystal regions align. Moving a permanent magnet near this core will also produce a changing alignment of the cores crystal lattice, equivalent to a straight wire moving through a perpendicular magnetic field at a velocity.
A rectifier may be useful on the output of the solenoid to produce dc.
Where is Eugene Atget photography studio and Where is the main location of his photography?
"was"
Paris.
What is a 1-legged support used to steady a camera?
The 1-legged support to steady a camera is called a "unipod."
Or monopod
How to turn on your isight camera in the mac os x?
To turn on your iSight camera, open an application that uses a webcam, like "Photo Booth". Your iSight should turn on when an application requires it to do so.
Can the magnets on a camera case drain a camera battery?
No.
Lithium Ion batteries (the type of rechargable battery used in most cameras) naturally lose charge over time. You should top them off in the charger at least once a week.
When and why was the camera invented and how has it affected society?
I thought the following would be interesting to you as the idea of cameras goes back centuries: It concept of "imagining" goes back to the 5th & 4th Centuries B.C. Chinese and Greeph philosphers describe the basic principles of optics and the camera. ISAASC NEWTON discovers in 1664-1666 that white light is composed of different colors. JOHANN HEINRICH SCHULZE discovered in 1727 that silver nitrate darkened upon exposure to light. In 1794 First Panorama opens, the forerunner of the movie house invented by ROBERT BARKER. JOSEPH NICEPHORE NIEPCE in 1814 achieves first photographic image with camera obscura - however, the image require 8 hours of light exposure and later faded. DIGUERRE'S first daquerreotype in 1837 was the first image that was fixed and did not fade and needed under 30 mins., of light exposure. First American patent issued in photograph to ALEXANDER WOLCOTT for his camera in 1840. WILLIAM HENRY TALBOT patents the Calotype process in 1841 - the first negative-positive process making possible the first multiple copies. In 1843 first advertisement with a photograph made in Philadelphia. FREDERICK SCOTT ARCHER invented the Collodion process in 1851 - images required only 2 - 3 secs of light exposure. In 1859 Panoramic camer patented - the Sutton. OLIVER WENDELL HOLMES invents steroscope viewer in 1861. RICHARD LEACH MADDOX invented the gelatin dry plate silver bromide process in 1871 - negatives no longer had to be developed immediately. GEORGE EASTMAN invents flexible, paper-basied photographic film in 1884 and IN 1888 EASTMAN PATENTS KODAK ROLL-FILM CAMERA. REV. HANNIBAL GOODWIN patents celluloid photographic fil in 1898. In 1900 first mass-marketed camer -- the Brownie. 1913/1914 first 35 mm still camera developed. In 1927 GE invents the modern flash bulb. 1848 EDWIN LAND markets the first polaroid camera. In 1960 EG&G develops extreme depth underwater camera for U.S. Navy. 1963 Polaroid introduces instant color film. 1973 Polaroid introduces one-step instant photography with the SX-70 camera. 1978 Konica introduces first point-and-shoot, autofocus camera. 1980 SONY demonstrates first consumer camcorder. 1984 CANON demostrates first digical electronic still camera. 1985 PIXAR introduces digital imaging processor. 1990 EASTMAN KODAK announces Photo CD as a digital image storage medium. Cameras are truly amazing piece of equipment. As they say "a picture is worth a thousand words." Imagine if we had cameras back in the days of Jesus Christ, and other points of history. Take a look at your American History and see pictures of Sitting Bull, Geronamo, etc. Without cameras, we could only imagine what it was like then. Cameras also give the delightful joy of seeing our family members and friends and looking back on good memories. Camera equipment also helps the police catch those crooks! Thank heavens we have it. Marcy
Can you get double exposures on film by loading already shot film into a camera and re-shooting it?
Of course. Chances are that the frames will not line up because the film will not be loaded exactly as the first time.
Should television cameras be allowed in the court room?
A highly debatable and much discussed question. Personally, I don't believe they add anything to the proceedings and, indeed, may take away much. The unfortunate and human tendency to "play to the cameras" is almost overwhelming on the part of both the defense and the prosecution (see: The O.J. Simpson trial) would be overwhelming and could quite possibly lead to unintended consequences in the meting out of justice.
Why does the earth show a smooth surface in the photograph despite of high mountains and villages?
The surface features of the earth "disappear" as one gets farther from it. It has to do with resolution. In general, if the earth was viewed from the moon without an optical aid, no surface features would be visible save clouds, oceans, land masses, and the like. And not for sure on all of them, either. Some will be seen and some of them will not be clearly distinguishable. But with a big telescope - bam! There's home! Sometimes when we look at a picture of the earth taken from space we may, without realizing it, begin to view a portion of it with "the mind's eye" instead of looking at the photo. We "know" what is there, even if we can't "see" it in the pic, can't make it out or resolve it. Lastly, a six mile high mountain isn't that much compared to a ball of material that is about 8000 miles in diameter....
If you wanted to Blur motion which shutter speed would you select?
Depends on the speed of the subject, it's distance from the camera and it's travel relative to the camera position if it is in motion. Objects coming straight to or going from the camera appear to be moving slower than objects travelling at the same speed but at right angles to the camera.
A plane propeller might be blurred at about 1/125 if the engine is idling. A jogger at about 20 feet, 1/30 would introduce some blur. Motion blur can also be depicted by panning.
