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Digital Cameras

Digital photography has grown exponentially in the 21st century, making film cameras nearly obsolete. Ask questions here about digital camera brands, functions and prices here.

4,826 Questions

What is the difference between a photograph and a snapshot?

A photographer is anyone who wields a camera - you, me, Auntie Sadie etc. A photojournalist uses a camera to record social phenomena or attitudes, or as a tool to put forward a political point of view.

How many photos can a 256-MB memory card hold?

The number of photos that can be held depends entirely upon what quality you wish to shoot the pictures at. A 5 megapixel camera, at maximum resolution, probably won't hold many photos. (25-30) As the resolution increases, the number of photos that can be held decreases exponentially. At a lower quality (say 640 by 480) you can hold between 1000 and 3000 photos on a 256 mb camera, depending upon the compression.

Do you need a business license for Photography in the state of Mississippi?

This will depend on the type of work you do. If you own a shop and want to sell your work at your shop, you will definitely need a business lisence. Or you might want to make a book of your work, in that case you will probably need to find a publisher, in that case they would have the business lisence.

Is it illegal to take pictures from a site with a digital camera?

If the picture is protected by copyright, you will need permission from the copyright owner. Sometimes that permission will be in the form of a Creative Commons license, which allows various types of usage without any additional permission.

Other works may be in the public domain, for example if they were works of the federal government (such as NASA images), or if protection has expired.

Some royalty-free stock photo sites allow using one image several times under the same agreement.

Can you get a speeding ticket from a camera on traffic lights?

No is the answer. There are many myths and fables but they are just that. You can challenge the accuracy of the reading and calibration of the device. You can challenge the siting and prominent colour of the device pertinent to the law. But number plate 'cloaking' devices or travelling at 'blind speeds', forget it. With the new generation camera pairs looking at average speed over a set distance, the likelihood of getting away with anything is even more remote.

What are the disadvantages of photography?

Pros:

You get to potentionally travel alot

You are your own boss

You get to do something you love

Its creative and stimunlating

You get lots of oppurtunities and get to meet interesting people

Cons:

The salary isnt great if you arn't very successful

^ Its hard to make it big

What is the first spacecraft to photograph the far side of the moon?

The Russian craft Luna 3 photographed the moon's hidden side for the first time on 7 October 1959, ten years before the first lunar landing. A total of 29 images were taken.


What is the difference between a digital and a film camera?

now Danielle is writing this :) digital cameras might seem better but are they?? They might be easier to use but they are actually harder because you have to focus them while the digital one is easier because they are easier to print and taking. This is why they are better than digital cameras.

I think the above answer confuses film camera with digital camera! The opinion expressed above seems to favour film camera rather than a digital one. Possibly so, but before submission the author of that statement above should have revised what he wrote!

What is the best photograph ever taken?

The best painting in the world is the one of my grand daughter, of course. Besides that, there is quite a difference of opinion. Some would go for The Mona Lisa. Some would chose The Last Supper. And Some would choose the Ceiling of the Cystine Chapel. All of these pictures are well done and all of these pictures go beyond the picture. The Mona Lisa has a semi-inviting smile. What does it mean? In the last supper, Jesus has just said a lot of information that is difficult to understand. Judas, with his head turned away knows it means that he will betray him. The other 11 wonder what it will mean for them. The painting of the ceiling of the Cystine Chapel shows the Biblical Story of the Creation of Man. It makes you think what possibilities did man have before he chose the one he picked. A movie that affected a number of people the same way was Dr. Zhivago. (A lot of others did not like it.) A great painting is one that looks beautiful in and of itself and also has you consider possibilities on beyond the painting. What were Adam's possibilities? What were the disciples thinking. What does Mona Lisa's smile mean?

Where must the film be placed if a camera lens is to make a sharp image of an object far away?

This varies widely depending on the camera. If you're talking a throw-away camera with a single element lens, an inch or so. If you're talking a large format portrait camera (film plate 4 x 5) the lens can be a foot away or more.

Exactly ! SLRs have the lens moved forward to allow the reflex mirror free passage (25-30mm for 35mm film) whereas my rangefinder has less than 3mm clearance between the wideangle lens' rear element and the focal plane shutter.

What is the meaning of police photography?

Police photography basically deals with forensic photography. In most cases, it deals with a scene of a crime while the term 'photography' generally mean anything that deals with pictures. Hope that helps...

How are computers used in photography?

Photoshop can edit in amazing ways. Also some computers (like mine) have a webcam that i can take pictures on or videos.

What was a box camera used for?

To take pictures, like any other camera. The Brownie Box camera by Kodak was one of the first mass produced ones and was named because it looked like a box. The earliest ones had to be sent to Kodak to have their film removed and replaced. They had no flash, no focus or aperature settings and worked outdoors.

Can you use the lenses from your minolta maxxum 7000i 35mm camera on a digital camera?

They should work on Minolta digital cameras, and possibly the new Sonys as well. Check carefully into the camera specs.

What kind of camera does a professional photographer use?

. Professionals mainly use the SLR type of digital camera and sometimes use "digital backs". As for makes, my personal opinion is to go with either Canon or Nikon cameras. .

Where are photographs developed?

You are not clear on whether you mean negatives, slides or prints; manually or by machine; color or black and white. The answer could be a long, long one if it is to be meaningful as there are many steps, controls and apparatus involved. Please Google it or borrow books from the library to appreciate the depth of the subject.

Why do rechargable batteries stop working properly?

A battery produces electricity because electrons flow from one reactant in the battery's chemical reaction to another reactant. However, once one of the reactants is completely used up, the chemical reaction stops, thus also stopping the flow of electricity. Now, how does a battery recharge? Well, the details of this are a bit too complicated to get into, but I can provide a abbreviated explanation.

A battery charger produces an electrical force that actually causes the battery's chemical reaction to reverse. Thus, when a battery is dead, it has all the products and no reactants. A battery charger will force those products to react with each other and reform the reactants. Once that happens, the battery is ready to go again. This doesn't work for all batteries, however. That's why many batteries are not rechargeable.

Hope this helps!

What is the difference between toning and dying in photography?

For info on toning, see "What is toner for in photography?"

Dying involves applying either oil based or water based dye with a very fine brush (for small areas) or cotton applicators for large areas of a print. The practice was usually reserved for adding a single element of color in a black and white print.

Which digital megapixels camera are good?

The top 5 best camcorders according to experts include the Canon VIXIA HF M52, the JVC HD Everio GZ-VX815, the Sony Handycam HDR-PJ430V, the Drift HD Ghost and the Sony Bloggie Touch. It is not possible to pinpoint one specific camcorder as each is slightly different and it depends on what you are trying to achieve, as to which one would be best for you.

What does pixel stand for in digital photography?

It is the term used when we want to check the result of a printer... dpi means: Dots per inch. more dpi means that the printing power of a printer is or the result of the print is much more clear or have a high resolution. This term is also used in visual graphics... more dpi means that the more clear image or picture on our monitor screen, so that the result would be more better.
DPI most generally refers to Dots Per Inch, a term applied to printing resolution. Specifically, it identifies the number of dots a printer can place on a page in one inch. Higher DPI means more detail and definition in a printed page.

A related term, PPI, or Pixels Per Inch, is applied to video screens. PPI and "dot pitch" both indicate how much detail can be seen on a computer monitor or TV screen. Again, high PPI (and low dot pitch) indicates more detail and definition in video images depending upon the resolution of the video device.

DPI can also refer to Deep Packet Inspection, which is applied to networks to analyze "packets" as they are routed through a network. Sometimes the packets are modified or deleted if they contain harmful computer instructions.

Related links:

https://en.wikipedia.org/wiki/DPI

https://en.wikipedia.org/wiki/Dots_per_inch

https://en.wikipedia.org/wiki/Deep_packet_inspection
DPI in computing terms means Dots Per Inch. It relates to the number of dots on each side of a 1 inch square, that are used to construct an image either on screen or on paper through a printer. The higher the DPI number - the finer the detail of the image.

How many pictures will a 1GB memory card hold at 10 mega pixels?

At least 6400, in all likelihood.

Megapixel (MP) count refers to the maximum resolution of the camera's sensor -- its ability to record detail. The number of images that can be recorded on a card of a given size is only indirectly related to the capacity of the card, which is measured in Kilobytes (KB) or Megabytes (MB), not MP. That will vary according to the image itself, and to the camera's settings.

For example: My Pentax K10D, with a 10.1 MP sensor and using a 4 GB card, will record approximately 821 images at the highest resolution (10 MP) and a "Fine" resolution setting. The same camera, with the same sensor and same card, will record 10,000-plus images at the lowest resolution (2 MP) and the "Low" resolution setting. Practically all cameras have this ability to change the resolution settings, and thus the sizes of the image files that are stored on the card.

So, you can see that it is only possible to answer your question in very general terms: The higher the capacity of the card, the more images you can store at whatever camera settings. And, as you can see above, even at the highest settings with a high MP count, you can take a lot of pictures!

One thing to think about: storage cards can and do fail. It is better to have two 1 GB cards than one 2 GB card, unless you plan to shoot a whole lot of video. That way if one fails, you can keep shooting and worry about retrieving the images off the other card later.

What does a copyright cost?

Nothing.

All creative works in the US are automatically copyrighted when first physically made.

There are fees to REGISTER a copyright, but registration is needed only if you anticipate a likelihood of commercial use.

The "mail it to yourself" idea suggested by a couple of other posters is sometimes called a "poor mans copyright", and has no legal value whatsoever in the US.

If a copyright is infringed, and the copyright is not registered, the only legal recourse is to have a court order the infringement stopped - no damages can be sought or awarded. If the copyright IS registered, then there can be damages. There's no 'in-between' area for stuff that's been mailed back to yourself.

Copyright law - including 'poor mans copyright' - is addressed by the US copyright office in the link below.