Lost
My old camera was 8 megapixels and the sd card held about 3,000 pictures
Answer
More than likely around 1000. My camera holds 2000 at 10.1 megapixels, with an 8gb card, but yours may be different...
More than likely around 1000. My camera holds 2000 at 10.1 megapixels, with an 8gb card, but yours may be different...
Question about cameras?
Q. So I have a small samsung tl34hd. It's a digital camera, but it has that flash setting where it pops up, and it's 14.7 megapixels so it's a pretty good camera. A friend of mine has the Nikon d3100. It's 14.2 megapixels, but seems to be better quality than mine. Hers IS a big camera, so I get that, but I don't get how mine has more megapixels if hers is better quality than mine. And she has standard lenses, nothing special.
Answer
To explain in greater detail about the image size vs. quality, megapixels is simply a measure of the size of the image, not of the quality. There is a big difference!
For most commercial cameras, the sensor (an electronic receiver of light. It's the electronic version of film) size is directly related to the quality of the image. The larger or sometimes better quality of sensor, the more color it can receive and interpret in addition to being able to work in worse lighting conditions with good quality.
So, for example, you have three general types of camera sensor: Full Frame, Crop Sensor, and then the sensor in most point-and-shoot cameras. The general explanation of these is:
Full Frame - The sensor in the camera is identical in size to a 35mm film slide. This is why you can use very old lenses on brand new cameras, because the way the light is focused through the lens to the film in a film camera is identical to how it focuses to the back of a Full Frame sensor. For example, the Canon 5D line or Nikon D700, D800, D1, D2, D3 cameras are all full-frame.
Crop Sensor - These are your lower end DSLR cameras. The sensor size is 1/4 the size of a full frame sensor (half the width and half the height). These cameras require special Crop Sensor lenses because the focal point will be different. Putting a full frame lens on a crop sensor camera will work, but since the full frame lens is trying to focus into an area larger than the sensor, the image will be cropped, hence the need for a special lens. Canon cameras in this category are the 7D and Nikons are the D7000, D3100, etc.
Point And Shoot cameras (small, inexpensive cameras or cameras in your phone). The sensor in these cameras is 1/4 the size of the Crop Sensor camera (half the width and half the height) and 1/16th the size of a Full Frame Sensor.
It's not to say that you can't take a great photo with a crop sensor camera vs. a full frame camera either though. For example, the Canon 7D camera is an outstanding crop sensor camera and compared to a Canon 1DS from 2002, it will take a much better photo as the sensor technology has advanced so much in the 10 year gap between them.
But this gets us to your megapixel question. Think about this for a moment. Generally speaking, a 10 megapixel image is about 3600 pixels wide and 2700 pixels tall (or 2700 X 3600 in a portrait photo). Multiply 3600 X 2700 and you roughly have 10 million pixels (hence the term "megapixel"). Knowing what you now know about sensor size, let's take this to a number that's more easy to manage.
Imagine you had a piece of notebook paper in front of you width-wise. On that paper I want you to put 100 "X"s across the page and 700 "X"s down. It's doable, yes? Now, tear the paper into a size 1/4 the size of your original piece and do the exercise again. It's a lot more difficult to put that many "X"s on a piece of paper 1/4 the size, isn't it? Now tear that piece of paper into 1/4 the size and do the exercise AGAIN. It's even more difficult, if not impossible.
So the issue is, just because you have more magapixels doesn't mean your image will be better, it just means more pixels. As technology gets better, they are able to make the smooshed pixels on the sensor better such as with the Nikon D3100 which has a very state-of-the-art crop sensor in it. Your Samsung Point And shoot is trying to cram all those pixels into a sensor 1/4 the size of the Nikon so in many respects, more pixels can often mean a LESS quality photo, not more.
This is why the only people who really care about megapixels in a camera worth less than $1000 is a camera salesman because he knows that most people don't know any of this information and they know that more megapixels in the mind of an ill-informed consumer means an easier sale of a camera. "Why would you want that crappy camera with only 10 megapixels when you can get this one which has 24 megapixels!" See my point? The 24 megapixel camera may not make for a better photo, but is sure helps sell a camera for a few bucks more!
To explain in greater detail about the image size vs. quality, megapixels is simply a measure of the size of the image, not of the quality. There is a big difference!
For most commercial cameras, the sensor (an electronic receiver of light. It's the electronic version of film) size is directly related to the quality of the image. The larger or sometimes better quality of sensor, the more color it can receive and interpret in addition to being able to work in worse lighting conditions with good quality.
So, for example, you have three general types of camera sensor: Full Frame, Crop Sensor, and then the sensor in most point-and-shoot cameras. The general explanation of these is:
Full Frame - The sensor in the camera is identical in size to a 35mm film slide. This is why you can use very old lenses on brand new cameras, because the way the light is focused through the lens to the film in a film camera is identical to how it focuses to the back of a Full Frame sensor. For example, the Canon 5D line or Nikon D700, D800, D1, D2, D3 cameras are all full-frame.
Crop Sensor - These are your lower end DSLR cameras. The sensor size is 1/4 the size of a full frame sensor (half the width and half the height). These cameras require special Crop Sensor lenses because the focal point will be different. Putting a full frame lens on a crop sensor camera will work, but since the full frame lens is trying to focus into an area larger than the sensor, the image will be cropped, hence the need for a special lens. Canon cameras in this category are the 7D and Nikons are the D7000, D3100, etc.
Point And Shoot cameras (small, inexpensive cameras or cameras in your phone). The sensor in these cameras is 1/4 the size of the Crop Sensor camera (half the width and half the height) and 1/16th the size of a Full Frame Sensor.
It's not to say that you can't take a great photo with a crop sensor camera vs. a full frame camera either though. For example, the Canon 7D camera is an outstanding crop sensor camera and compared to a Canon 1DS from 2002, it will take a much better photo as the sensor technology has advanced so much in the 10 year gap between them.
But this gets us to your megapixel question. Think about this for a moment. Generally speaking, a 10 megapixel image is about 3600 pixels wide and 2700 pixels tall (or 2700 X 3600 in a portrait photo). Multiply 3600 X 2700 and you roughly have 10 million pixels (hence the term "megapixel"). Knowing what you now know about sensor size, let's take this to a number that's more easy to manage.
Imagine you had a piece of notebook paper in front of you width-wise. On that paper I want you to put 100 "X"s across the page and 700 "X"s down. It's doable, yes? Now, tear the paper into a size 1/4 the size of your original piece and do the exercise again. It's a lot more difficult to put that many "X"s on a piece of paper 1/4 the size, isn't it? Now tear that piece of paper into 1/4 the size and do the exercise AGAIN. It's even more difficult, if not impossible.
So the issue is, just because you have more magapixels doesn't mean your image will be better, it just means more pixels. As technology gets better, they are able to make the smooshed pixels on the sensor better such as with the Nikon D3100 which has a very state-of-the-art crop sensor in it. Your Samsung Point And shoot is trying to cram all those pixels into a sensor 1/4 the size of the Nikon so in many respects, more pixels can often mean a LESS quality photo, not more.
This is why the only people who really care about megapixels in a camera worth less than $1000 is a camera salesman because he knows that most people don't know any of this information and they know that more megapixels in the mind of an ill-informed consumer means an easier sale of a camera. "Why would you want that crappy camera with only 10 megapixels when you can get this one which has 24 megapixels!" See my point? The 24 megapixel camera may not make for a better photo, but is sure helps sell a camera for a few bucks more!
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