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General discussion

How Many Pixels do we need.

Sep 14, 2005 3:14AM PDT

I believe I represent the majority of digital camera users. Basically we take 'snap-shots' for our own use and to show to relatives and friends. Some of us enter pictures in digital Photo Contests, occasionally we might use a photo to advertise something we want to sell, or to submit to a local newspaper or journal. On the whole however, we take pictures to remember episodes and elements of our lives, and to enhance our enjoyment of hobbies and interests, etc. etc.

So I say again, how many pixels do we need in a digital camera to facilitate and enable our picture taking ambitions? It seems to me the digital camera industry is going nuts in promoting ever more 'sophisticated' cameras with more and more pixels. Indeed the primary measurement of a digital camera's capabilities seem to be how many pixels it can take. To me, that seems to be analagous to classifying cars by how fast they go, or how many passengers or baggage they can carry.

So what are the hard facts and criteria that we really need to know (be told about) in order to make an informed decision about what to buy?

1. Are you going to want to print hardcopy pictures, and if so how big will they be on average? The vast majority of camera users almost never print anything bigger than about 4'' x 6''.

2. How many dpi (dots per inch) does your printer have? How much would you pay to have a high resolution printer to print large (or super high quality colour) pictures?

2. How many pixels do you think are available on your computer monitor? I set mine to work at 1024 x 768. In otherwords just over 780.000 - thats less than 1 Megapixel folks. If you use 1200 x 860, thats just over 1.2 Megapixels.

Having more than 2 megapixels will not enhance your viewing pleasure, be it on your monitor or on snapshot size prints. On your monitor, the software will reduce the resolution (in effect reduce the number of pixels in the digital image to match the resolution of your monitors screen). On your printer, as a 'snapshot' sized print, you wont be able to see (without a magnifying glass) the difference between two pictures taken with cameras of different Megapixels more than 1 Megapixel.

The most important quality of a digital camera (any camera for that matter) is the quality of the glass lens (eg. how sharp and how chromatically correct). Umpty-umpty MPs linked to a less than high quality lens will uniformly produce low quality pictures - significantly less quality than a camera with relatively low MPs but with a good quality lens.

Just check the prices between cameras of less than 3 MP compared to ones of 5MPs and above!!! - are the lenses significantly better????

What do you think?

Discussion is locked

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Let me tackle color.
Sep 14, 2005 3:56AM PDT

The color 'correctness' of most PCs is abysmal. If this matters to you then you look at getting the PANTONE SPYDER which does wonders for color issues.

As to the camera colors, a little help by selecting the color temperatures goes a long ways.

As to pixels, I started at 640x480 pixels and still have a few 'wow' shots from that Epson PhotoPC camera. My next camera was the Canon 2.1 MP Digital Elph. What a step up. I didn't like the battery time on it.

Now I have a pair of Kodaks. The 4MP DX6490 and the 5MP DX7590. I like the 7590 a bit more not for the pixels but for the better controls. Turning on the 6490 makes one wonder what were they thinking. The optics on both are very nice and I have very little to complain about the 7590.

Hope this helps,

Bob

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Pixels
Sep 14, 2005 6:09AM PDT

The majority of people can do fine with 3 megapixels.
My brother is still using his 2 megapixel Canon A60.
It does everything he wants it to do.

I did find one more reason to have more megapixels.

I have made about 50 slide show DVDs.

The last one was at an airshow. I was using a camera that outputs 8 megapixel photos.

When using the slideshow "Ken Burns" effect (pan and zoom) I was able to zoom deeply into the photos and maintain sharpness all the way.

It is similar to cropping an area from a photo and blowing it up to the size of the original photo.
More megapixels will let you do this with better results.

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The camera makers are clearly trying to get the cameras
Sep 14, 2005 8:17AM PDT

at least as good as 35mm film. As I recall, 35mm has about 15 million pixels. Pro cameras easily go much larger than that.

Consumers are probably benefiting because cameras at lower price points (under $1,000) become increasingly more capable. Most people will probably not invest in a high priced printer, but they will send their photos to a commercial processor who does have high quality equipment. It strikes me as shortsighted to think that 1 or 2 megapixel cameras can do the job. However, if that will satisfy you, the world is very nice indeed, and photography will be a low cost hobby. Have fun! Wink

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I completely agree.
Sep 14, 2005 11:41AM PDT

The majority of the messages I read on this forum asking for help appear to be from people that have little or no idea what they need but seem to think more pixels is better.

I prefer to view my photos on my Dell Ultrasharp LCD monitor but my wife takes all our photos to COSTCO for 4X6 in prints.

I do print and frame my better photos 8X10 in using an Epson Stylus Photo printer (I even refill the ink cartridges myself) and the prints look perfect to me.

My camera is a 3.1 MP Panasonic with Leica lens and my wife uses an old Fuji Finepix 2400Z.

Our photos made using these cameras are so much better than the ones made with our old 35 mm cameras it is unbelievable...but we are not professional photographers.

I don't think many professional photographers submit posts to this forum.

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Depends on
Sep 15, 2005 3:18AM PDT

How serious you want to go for ? 5, 6, 8 , 9, 10, and even more MP pixels... If you 're not gonna print-out the large & high quality picture ( such as A4 picture size ), 6 MP or above camera will be required for that need. Otherwise, why spend more for no-use application?

I've seen many copies of 35mm camera's , DSLR camera's , and below-6MP digital camera's pictures A4 print-outs at Fuji Laboratory Head Office in Thailand. I saw that under the low light circumstances; for instance, night shooting & fireworks, 35mm camera had overcome most DSLR and compact digital camera. When applied enough lighting, A4-size pictures showed a very close match between the ( 6MP or above )digital camera and 35mm camera. I suggest that you go and get to see some enlargements at many photo studios, ask these experts for more opinions. Good luck.