How many megapixels does an analog 35mm stil camera film have? I'd say only one megapixel.?

Somebody w

what dpi, dots per inch resolution does the film have?

Answer
That is an apples to oranges comparison.

It would depend on the film/film speed, print size, and type of digital camera (sensor density) being compared. Film does not have DPI, it has lines per millimeter (L/mm).

Depending on the film used, quality/size of the final image, and the math formulas, film could be said to be between 39 and 180+ megapixels. For example, you could drum scan a 35mm negative and enlarge it to cover the side of a barn and not lose detail/tonal quality. Even the best DSLR file, would pixelate at a fraction of that size.

How do I know which megapixel camera to get? A 10 or an 8?

Crystal

I've been reading reviews on some cameras and some people say just b/c a camera megapixel setting is higher doesn't mean you'll get a better picture. Is this true? I notice that some 8 megapixel cameras get really good reviews and are cheaper than the 10 megapixel cameras. The 10 megapixel cameras get really good reviews too, but are more expensive. How do I know what camera to buy?

Answer
Pay no attention to the megapixels. Every modern camera has more than enough for anything you would want to do. In fact to many megapixels on a tiny sensor can be worse.

The biggest determiner of image quality would be the optics (lens). On point and shoot cameras I would go for the one with the most zoom. With an SLR you should get the best lens you can afford.

Next would be the analog to digital converter (the inner workings of the camera). This is how the camera takes what it sees and converts it to a digital image.

Next would be the sensor size. Point and shoot cameras have tiny sensors. SLR's have much larger sensors. As much as 15 times larger. This is why a 6mp DSLR will take a far superior photo than a 12mp point and shoot.

Finally would be the amount of mega pixels. While technically speaking the more mp the larger and more detailed you can blow up a picture. The problem comes in the size of the pixels not in how many there are. Tiny pixels generate more heat on the sensor. More heat equals more noise or grainyness to your pictures.

So I would encourage you to look at all the other features of the camera. The one that has the features you want is the camera you should get.

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How do I know which megapixel camera to get? A 10 or an 8?

megapixel analog camera image

Crystal

I've been reading reviews on some cameras and some people say just b/c a camera megapixel setting is higher doesn't mean you'll get a better picture. Is this true? I notice that some 8 megapixel cameras get really good reviews and are cheaper than the 10 megapixel cameras. The 10 megapixel cameras get really good reviews too, but are more expensive. How do I know what camera to buy?

Answer
Pay no attention to the megapixels. Every modern camera has more than enough for anything you would want to do. In fact to many megapixels on a tiny sensor can be worse.

The biggest determiner of image quality would be the optics (lens). On point and shoot cameras I would go for the one with the most zoom. With an SLR you should get the best lens you can afford.

Next would be the analog to digital converter (the inner workings of the camera). This is how the camera takes what it sees and converts it to a digital image.

Next would be the sensor size. Point and shoot cameras have tiny sensors. SLR's have much larger sensors. As much as 15 times larger. This is why a 6mp DSLR will take a far superior photo than a 12mp point and shoot.

Finally would be the amount of mega pixels. While technically speaking the more mp the larger and more detailed you can blow up a picture. The problem comes in the size of the pixels not in how many there are. Tiny pixels generate more heat on the sensor. More heat equals more noise or grainyness to your pictures.

So I would encourage you to look at all the other features of the camera. The one that has the features you want is the camera you should get.

What kind of security camera system should I buy to watch my house from a laptop?

el aji

I've heard-of a security camera system that I could watch my home from a laptop while at work. What company should I refer to get this setup, and will any laptop work?

Answer
Hello

Not all DVRs are created equal, in fact there are many options that offer varying performance much like the automobile industry. In the world of DVRs you can find the equivalent of a $10,000 Kia and a $350,000 Ferrari and everything in between. Both have 4 wheels and windshield but that where the similarities end, itâs under the hood that counts. Just like any other consumer electronic in the end you get what you pay for.

I suggest you buy a PC based DVR has they have more processing power and normally have a much smaller file size and offer more features then Standalone DVR's. I know many people buy a cheap standalone DVR, only to upgrade to a PC based in 6 months especially when they are using it to manage a store remotely. Also PC based allows you to record up to 64 cameras where a standalone will have a limit of 16.

Many people have the misconception that a PC-Based DVR is simply an off-the-shelf PC with video capture (encoder) cards, display (decoder) cards and some generic OEM software. A true DVR requires years of research and development to facilitate the seamless integration of both the hardware and software. DVRs are highly complex systems that must run 24/7, processing millions of images per day. This makes consumer-level hardware inadequate for DVRs which is why Ascendent uses custom-built PCs with performance-level hardware.

My personal favorite DVR is Ascendent X4 series: Ascendentâs Tri-Fusion Hybrid Platform allows for the creation of a true hybrid surveillance system by utilizing the advantages of Analog, Megapixel, and IP technologies for unparalleled customization and expandability. I am working on government projects and use Ascendent cameras and DVR because the offer superior performance and cost less then comparable brands like bosh, Honeywell and pelco.

The X4 also uses the latest H.264/SVC codec offer video substantially better quality,. While its file size sizes is 30% smaller than MPEG-4, 60% smaller than MPEG-2, and exponentially smaller than MJPEG.

File size is crucial to streaming because most DVRâs on the market record at real time performance (30FPS per channel) so on a 4CH is trying to send 120, 8CH 240, and a 16CH 480 images per second which requires way too much bandwidth even for the most extreme internet connections.

The smaller the files size the more images are able to be sent, and the faster they can be processed improving both FPS and speed. File size is the heart of any DVR and goes far beyond just its streaming capabilities, as it also determines the recording storage time, how much you can back up at once, how fast it renders and searches video. The file size of a DVR impacts the performance of the DVR in just about every aspect from speed to longevity and is often the most important spec of any DVR.

If you are buying a DVR and streaming is a high priority I suggest you ask for a demo and connect to the DVR to make sure it is able to stream fast enough for your needs. Most DVRs say they have remote viewing but it is often too slow and laggy to be of any use especially if it is a standalone. Some good DVR brands that I recommend are Bosch, Pelco, Honeywell and Ascendent. These brands are what security professionals use, Q-see, Swan and Lorex are only used in residential applications because they are sold by Tiger Direct, Spytown, Newegg, Sams Club, Costco and other retail outlets but are not used by any security professionals also their tech support rarely speaks English as their first language...

These brand manufacturers also have a complete line of CCTV cameras for any application from residential to military.

http://www.ascendentgroup.com (Recommend)
http://www.honeywell.com
www.pelco.com
http://www.bosch.com

Hope this helps

williammorales93@ymail.com

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How do I know which megapixel camera to get? A 10 or an 8?

megapixel analog camera image

Crystal

I've been reading reviews on some cameras and some people say just b/c a camera megapixel setting is higher doesn't mean you'll get a better picture. Is this true? I notice that some 8 megapixel cameras get really good reviews and are cheaper than the 10 megapixel cameras. The 10 megapixel cameras get really good reviews too, but are more expensive. How do I know what camera to buy?

Answer
Pay no attention to the megapixels. Every modern camera has more than enough for anything you would want to do. In fact to many megapixels on a tiny sensor can be worse.

The biggest determiner of image quality would be the optics (lens). On point and shoot cameras I would go for the one with the most zoom. With an SLR you should get the best lens you can afford.

Next would be the analog to digital converter (the inner workings of the camera). This is how the camera takes what it sees and converts it to a digital image.

Next would be the sensor size. Point and shoot cameras have tiny sensors. SLR's have much larger sensors. As much as 15 times larger. This is why a 6mp DSLR will take a far superior photo than a 12mp point and shoot.

Finally would be the amount of mega pixels. While technically speaking the more mp the larger and more detailed you can blow up a picture. The problem comes in the size of the pixels not in how many there are. Tiny pixels generate more heat on the sensor. More heat equals more noise or grainyness to your pictures.

So I would encourage you to look at all the other features of the camera. The one that has the features you want is the camera you should get.

What kind of security camera system should I buy to watch my house from a laptop?

el aji

I've heard-of a security camera system that I could watch my home from a laptop while at work. What company should I refer to get this setup, and will any laptop work?

Answer
Hello

Not all DVRs are created equal, in fact there are many options that offer varying performance much like the automobile industry. In the world of DVRs you can find the equivalent of a $10,000 Kia and a $350,000 Ferrari and everything in between. Both have 4 wheels and windshield but that where the similarities end, itâs under the hood that counts. Just like any other consumer electronic in the end you get what you pay for.

I suggest you buy a PC based DVR has they have more processing power and normally have a much smaller file size and offer more features then Standalone DVR's. I know many people buy a cheap standalone DVR, only to upgrade to a PC based in 6 months especially when they are using it to manage a store remotely. Also PC based allows you to record up to 64 cameras where a standalone will have a limit of 16.

Many people have the misconception that a PC-Based DVR is simply an off-the-shelf PC with video capture (encoder) cards, display (decoder) cards and some generic OEM software. A true DVR requires years of research and development to facilitate the seamless integration of both the hardware and software. DVRs are highly complex systems that must run 24/7, processing millions of images per day. This makes consumer-level hardware inadequate for DVRs which is why Ascendent uses custom-built PCs with performance-level hardware.

My personal favorite DVR is Ascendent X4 series: Ascendentâs Tri-Fusion Hybrid Platform allows for the creation of a true hybrid surveillance system by utilizing the advantages of Analog, Megapixel, and IP technologies for unparalleled customization and expandability. I am working on government projects and use Ascendent cameras and DVR because the offer superior performance and cost less then comparable brands like bosh, Honeywell and pelco.

The X4 also uses the latest H.264/SVC codec offer video substantially better quality,. While its file size sizes is 30% smaller than MPEG-4, 60% smaller than MPEG-2, and exponentially smaller than MJPEG.

File size is crucial to streaming because most DVRâs on the market record at real time performance (30FPS per channel) so on a 4CH is trying to send 120, 8CH 240, and a 16CH 480 images per second which requires way too much bandwidth even for the most extreme internet connections.

The smaller the files size the more images are able to be sent, and the faster they can be processed improving both FPS and speed. File size is the heart of any DVR and goes far beyond just its streaming capabilities, as it also determines the recording storage time, how much you can back up at once, how fast it renders and searches video. The file size of a DVR impacts the performance of the DVR in just about every aspect from speed to longevity and is often the most important spec of any DVR.

If you are buying a DVR and streaming is a high priority I suggest you ask for a demo and connect to the DVR to make sure it is able to stream fast enough for your needs. Most DVRs say they have remote viewing but it is often too slow and laggy to be of any use especially if it is a standalone. Some good DVR brands that I recommend are Bosch, Pelco, Honeywell and Ascendent. These brands are what security professionals use, Q-see, Swan and Lorex are only used in residential applications because they are sold by Tiger Direct, Spytown, Newegg, Sams Club, Costco and other retail outlets but are not used by any security professionals also their tech support rarely speaks English as their first language...

These brand manufacturers also have a complete line of CCTV cameras for any application from residential to military.

http://www.ascendentgroup.com (Recommend)
http://www.honeywell.com
www.pelco.com
http://www.bosch.com

Hope this helps

williammorales93@ymail.com

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How do digital cameras take the pictures?

megapixel analog camera image

D3V!N

I mean what causes it to memorize EVERY piece in that picture?
What is it that actually TAKES the picture?
What makes the standard camera different from a HD Camera?

Answer
When you take a picture with a digital camera the light strikes a digital sensor array, instead of a piece of film. These digital sensors are computer "chips" with names like CCD, CMOS, Foveon, or others. They take the place of a piece of film that must be moved across the focal plane of the camera. The digital sensor is made of millions of tiny sensor points called "pixels," which is short for "picture elements." They are laid out in an array with rows and columns, like in a computer spreadsheet or wall calendar. For instance, my camera has an array of sensors in its CCD that is 3008 horizontally, and 2000 pixels vertically (3008x2000). If you do a simple mathematical formula on the pixel array size you will come up with the "Megapixel" rating of the camera. This is the number that most manufacturers use to sell the camera. The simple formula 3008x2000 = 6,016,000 shows that my camera has over six million pixels, or is a "six megapixel" camera.

Think of megapixels as millions of dots of light that are being stored for each picture. The more dots of light there are, the higher the resolution of the image. More pixel dots = bigger pictures. Usually, the more megapixels the better! It takes a lot of megapixels to make prints on photo paper, so it would be best to get a camera with as many megapixels as you can afford. ..

When the image strikes the sensor, it gets all those megapixels excited. First the image goes through color filters above the individual sensors. The sensor converts the image from light waves into an analog electrical signal. The analog signal is then run through an analog to digital converter (A-D Converter), where it becomes a pure digital signal. Then it is again put through a series of electronic filters that adjust the white balance, color, and aliasing of the image. Next a compression cycle makes the image as small as possible by dumping unnecessary pixels, for more efficient storage. Now the camera has a nice compressed, filtered, digital signal representing your image.

The image is then transferred into a temporary storage area inside the camera called "buffer memory," or simply the "buffer." When the buffer is full, the image is written out to your storage media, such as a memory card. The buffer size in the camera is an important thing. It tells how many images you can take in quick succession. If you have a tiny buffer in your camera, you will have to wait a bit after you take several images.

In fact, the main thing that drives the cost up on digital cameras is the number of megapixels, and the size of the memory buffer. Most cameras have a reasonable amount of both, so you needn't worry. Even if you can only afford a very inexpensive digital camera, you will still have nice images, you just might be limited in their maximum size on photo paper, and will have to wait a bit when taking images quickly. Almost any digital camera is capable of taking pictures for display on the Internet, or for sending across the Internet as email. Images on the Internet are very low resolution -- about 72 to 100 dots per inch -- so any quality digital camera will be capable of making beautiful images for display there.


WHAT ABOUT PRINTING MY DIGITAL IMAGES?

To make a nice 4x6 inch print will require a camera of at least two megapixels. To go up to an 8x10, or 11x14 inches, it is best to have a four to six megapixel camera. Of course, an image processor can make the smaller megapixel cameras do larger prints by stretching the image a bit. This is a process called "interpolation," which simply means adding extra dots of light (pixels) to make the image larger. Image quality degrades a bit when this happens, but is generally acceptable. So a two-megapixel camera could make a print up to 8x10 if needed. A four or six megapixel camera will do an even sharper image, and can make nice images printed all the way up to at least 11x14 inches.

One nice feature that has not yet arrived on film cameras, other than Polaroids, is the freedom to immediately view the image you just took. Since even low-cost digital cameras have small video monitors on the back of the camera, you are able to see if that image is a keeper, or should be deleted. Think of how much money you will save by only printing the images you like, instead of taking a bunch of film images, keeping the best ones, and shoving the rest in a shoebox in the closet. Digital cameras cost more up front, but cost less over the long run to use. You can afford to take many more pictures than you ever could before using a digital camera.

hope it helps

How many megapixels are really necessary?

Jonathan L

I'm looking into getting a little bit better of a digital camera and was looking into a digital SLR. I was looking at a Canon Digital Rebel/350D which is 8.0 mp. And the Nikon D40/50, either of of which is 6.1 mp. Would that extra 2mp make such a big difference in picture quality? The reason I am looking at these two is because I already have lenses that should fit either one.

Answer
The MP will make a difference in your LARGER prints. 6MP will give you professional quality 8x10 prints and 8MP will yield 11x14 or so. I am talking about 'better than analog quality' style photos when I mention the above.

BUT BE ADVISED, the PRINTER you choose for enlargements will be even MORE IMPORTANT! Either choose an outside service of get a PRO printer ($300-$500) with high quality ink.

No need worrying about the Megapixels unless you plan to actually create some professional-style use for the photo... (i.e. printed and then framed, etc.)

FYI. The new CANON Rebel is a GREAT camera!

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