How can I know that my photo is 2megapixel / 3megapixel?
Is there any way to know that my digital photo is ______ Megapixels.
2006-06-06 19:58:43 · 6 answers · asked by pavan_kg 2 in Computers & Internet ➔ Other - Computers
it is very easy.
just check the properties of the image.
you can use picasa it will help.
you can get all the info the camera make ,lens ,apperture,focal length,aperture ,exposure time every thing.
u can never get to know by the size of the image coz,you can always shoot for low sizes too.
2006-06-06 20:05:47 · answer #1 · answered by srihari_reddy_s 6 · 1⤊ 0⤋
http://www.wisegeek.com/what-is-a-megapixel.htm
When it comes to digital cameras, the first thing everyone wants to know about is megapixels.
Well, in general, the more the better. Megapixels are the horsepower that drive your image quality and potential print size. I recommend a minimum of 3, but 4 or 5 is great. If you have the money to spring for one of those new 6 or 8 megapixel bad boys, that's even better.
Why do you need so many? Well, the more you have, the bigger you can make your pictures. As a very general guideline, "photo resolution" is 300 DPI or so. Beyond that, only a trained eye behind a magnifying glass is going to see much difference.
Based on the above information, you'd need around 7.2 megapixels to make a "photo quality" 8x10. (3000 X 2400). If suddenly film is sounding a lot better, don't worry, I've got some good news.
We did a test to see if a 2.3 megapixel camera (actually 1.92 - 1600 x 1200) could produce a good quality 8x10. We took a measurement and the resolution was a painfully low 150 DPI at 8x10. (For you pixel counters, yes, we had to crop in to make the picture proportional to 8x10.)
Even so, we found a good print could be had - if you have the right paper and printer. We used HP Premium Plus photo paper with an HP 970 series printer and produced a fairly good 8 x 10. I was really surprised when I saw it, much better than expected.
Sure, upon close examination you could tell it could've been a bit better, but hold it out at arm's length and all the imperfections melt away.
Our conclusion after testing is this - If you really want good 8 x 10s, you may want to go with a 4 megapixel camera or better - and invest in a good photo printer. It can be pulled off with lesser equipment, but the results just won't be as pleasing.
2006-06-07 03:01:44 · answer #2 · answered by Track Walker 6 · 0⤊ 0⤋
try the specs of your cam...usually you can see it there. I dont think it is possible to know what megapixel the picture has, by just looking at it.
2006-06-07 03:04:56 · answer #3 · answered by cooldude 5 · 0⤊ 0⤋
Look at it's size (for example 1024*768, the result is the number of pixels this image has...).
2006-06-07 03:10:03 · answer #4 · answered by agent-X 6 · 1⤊ 0⤋
3-megapixel resolution have dimension is 2,048H x 1,536V
2006-06-07 03:03:30 · answer #5 · answered by Anonymous · 0⤊ 0⤋
prob says on the box or camera.... waht type of camera is it would help...
2006-06-07 03:02:17 · answer #6 · answered by Anonymous · 0⤊ 0⤋