How can i work out the dimensions of an image by using just the number of megapixals on the camera?

2 megapixel camera example image

Nappymonst

Using the number of megapixels a camera has, how can i approx. workly out the resolution of the image. I want to work out 16.7 Megapixal - how large would the images be?

Nappymonster

Answer
You've overlooked the elephant in the room: the dpi of the image. Without that figure, the question means nothing.

Say you're doing a billboard at 10 dpi. This means you need 100 pixels/sq inch. 16.7 MP would give you 1160 square feet.

Say you're doing a high-res print at 300 dpi. This means you need 90,000 pixels/sq inch. 16.7 MP would give you 186 square inches.

Do you see the difference?

My rule of thumb that I teach people is this:

1. magazine grade printing requires 300 dpi.

2. 300 dpi means 90K (300 squared) pixels per square inch; in other words, you get 11 square inches of print per meg of pixels.

3. Thus, an 8X10, for example, is 80 square inches and requires 80 X 90K = 7.2 MP.

Screen shots require only 72 dpi, so 80 sq inches of screen real estate takes only 72 X 72 X 80 = 415K. (it doesn't hurt to go up to 100 dpi for screen shots)

It all depends on what you're doing. Large prints and calenders can be done at 150-200 dpi and look OK on the wall, but high-quality publishing always demands 300 dpi.

If a camera has the same amount of megapixels will its pictures look just the same?

xoxoxoxoxo

Camera phones acually.
I'm getting the LG Neon which has 2.0 megapixels,
and i've seen sample photos from the iphone, which also has 2.0 megapixels.

So I wanna know, will a picture taken by the lg neon look the same as a picture taken by the iphone?

thanks!

Answer
No, It simply means that the resolution of your picture would be same but the image quality will depend of the sensor.

For example Canons CMOS sensor is far superior to is Nikon's sensor and thus Canon's photos are better quality than it rival Nikon.



Rohn

Powered by Yahoo! Answers

Is 2 megapixels in a phone camera good?

2 megapixel camera example image

Caitlin

I want to get an iPhone, and I think either way it's what I'll end up getting.. But I've read that it's a 2 megapixel camera, is that good or bad?

Answer
wat almost everyone doesnt know is that its not the megapixels that make the camera's image quality good. the number of megapixels is the size of the pictures, not quality. for example, the RAZR2 has amazing image quality but its got a 2 megapixel camera. where as the Samsung Behold has a 5 megapixel camera but its got a pretty bad camera. its all in the lens of the camera, the sensor and the processor.

just to let u know, the iPhone sucks, and so does its camera. if u want a REALLY GOOD phone then get the T-Mobile G1, its a 3 megapixel camera but its camera isn't that good.

hope this helped!!

Should I get the iPod Touch 4 or the Samsung Galaxy player 4?

Scobe591

I was going to get the new touch, but saw mediocre reviews on the camera, which is one of the main reasons I wanted to get a new one (I have the ipod touch 3g). I haven't found any reviews on the Galaxy Wifi 4.0, but it looks intriguing, with its 3.2 megapixel camera and Android software. Anyone know anything about this?

Answer
i do. the Samsung galaxy player 4.0 has the ability to switch from .3,1,2,2.5, and3.2mp in the camera, has the ability to change brightness of the picture the picture, image stabilizer, auto focus, different custom settings for different scenes depending on what your taking a picture on and where, the ability to easily make a panorama, to add frames, effects like sepia water color negative and black and white, change the exposure, and image quality in a sleek easy to use interface make the Samsung galaxy players camera much more useful and just better than the iPod touches camera. (plus the galaxy players camera is 5 times the resolution of the iPod touches camera)

plus any specification the iPod has the galaxy player doubles it or in the case of graphics triples it for example (ram, screen color production and viewing angles, speakers are superb even louder than an ipad, and you should get a longer battery life )

Powered by Yahoo! Answers