So what sensor resolution do ours need?
The short answer
For the Web or newspaper reproduction, 2 to 4 megapixels is enough. For magazines and large print sizes (16x20 inches and greater), 6 megapixels is a good starting point. Fine-art landscape photographers and others seeking maximum detail should consider 10-megapixel-plus digital SLRs such as the Canon EOS 1Ds Mark II .
The long answer
Do the math. For example, let's say i wanna making an 8x10-inch print on an inkjet printer.
Step 1:
Figure out the required output resolution. lets say, my inkjet printer produces best results at a resolution of 240 pixels per inch or greater. *depends on how good is your printer*
Step 2:
Multiply the required output resolution by the linear dimensions of your final print.8 inches x 240 pixels per inch = 1,920 pixels required for the vertical dimension10 inches x 240 pixels per inch = 2,400 pixels required for the horizontal dimension
Step 3:
Multiply vertical by horizontal.1,920 x 2,400 = 4,608,000, or 4.6 megapixels, is my minimum required resolution.
Keep in mind:The math outlined above isn't written in stone; you can usually get good large prints even when you scale an image's resolution up in a program such as Photoshop.
For any printing from shop, it 300 pixels per inch.
Enjoy your calculation then.
*taken and modified from cnet.com*
The short answer
For the Web or newspaper reproduction, 2 to 4 megapixels is enough. For magazines and large print sizes (16x20 inches and greater), 6 megapixels is a good starting point. Fine-art landscape photographers and others seeking maximum detail should consider 10-megapixel-plus digital SLRs such as the Canon EOS 1Ds Mark II .
The long answer
Do the math. For example, let's say i wanna making an 8x10-inch print on an inkjet printer.
Step 1:
Figure out the required output resolution. lets say, my inkjet printer produces best results at a resolution of 240 pixels per inch or greater. *depends on how good is your printer*
Step 2:
Multiply the required output resolution by the linear dimensions of your final print.8 inches x 240 pixels per inch = 1,920 pixels required for the vertical dimension10 inches x 240 pixels per inch = 2,400 pixels required for the horizontal dimension
Step 3:
Multiply vertical by horizontal.1,920 x 2,400 = 4,608,000, or 4.6 megapixels, is my minimum required resolution.
Keep in mind:The math outlined above isn't written in stone; you can usually get good large prints even when you scale an image's resolution up in a program such as Photoshop.
For any printing from shop, it 300 pixels per inch.
Enjoy your calculation then.
*taken and modified from cnet.com*
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