Canon Digital Cameras and Lenses

Anything to do with Canon Digital Cameras and Lenses

March 12th, 2010

Canon Ixus Ad Song

When I promised readers that I'll do an article on this subject, I was scared. For two reasons – first, is a huge problem. I receive many questions about him, and I see a lot of misunderstanding about this.

Secondly, because there are many good articles on this subject site and rel = "nofollow" href = "http://www.luminous-landscape.com/tutorials/understanding-series/res-demyst.shtml"> this so quickly to you:

DPI – Dots per inch

The most common question I receive on this subject: "My client / Boss / nephew asked me to send an image to a size 300 dpi. What do you mean "mean?

The answer Not much.

You see, DPI means dots per inch. It is a useful measure of image resolution (in other words, the amount of information is resolved in the image). But if you do not know the image size in inches (or feet, miles millimitres cm, or other measure of size), about 60 miles per hour. "That makes sense, the answer should be" approximately 10 minutes 60 miles per hour. "

Similarly, the size of an image must be expressed as, say, "six by six inches at 300 dpi.

different resolutions are used for different purposes. The most common are 72 or 75 dpi for display on the screen (using the Web or PowerPoint presentations) and 300 dpi for printing.

OK, so give an example – 1 inch by 1 inch, 300 dpi image is 300 pixels by 300 pixels in size. A 2 image 2 inches at 300 dpi is 600 by 600 pixels in size. Here megapixels and megabytes in it. Mega!

Megapixels

The term megapixel is generally used to describe the size of image production of digital cameras. For example, the Canon Ixus 50 produces images that are 2592 x 1944 pixels. Multiply these numbers together and you get 5,038,848 – just over $ 5 million. Therefore, this is described as a "5 Megapixel camera.

The last byte

On some occasions, I sent a photo of a certain size and that someone said, "this is not good, we need a file of 10 megabytes. But I'm sure they were well intentioned, but were a little sore.

The size in bytes (or megabytes – millions of bytes) represents the amount of storage of images on your computer. This depends on many things, especially the bit depth and image file format – for example, TIFF or JPEG.

So what do I do?

To avoid confusion, specifying the size of the file you need to use pixels.

How do I know how many pixels you need? Well that is why I started this discussion with the CIO. Calculate the largest size that you want to reproduce the image in inches, and resolution – Eg 72 dpi for 300 dpi or more for printing applications. Then, simply multiply the size in inches by the DPI figure he came.

Example: I want to reproduce the image A4 size in a print magazine. A4 is 210 mm x 297 mm, or about 8.3 x 11.7 inches. The magazine needs work Art 300 dpi, then:

8.3 x 300 = 2490 and 11.7 x 300 = 3510, so I need an image size about 2490 x 3510 pixels (approximately 8.7 million pixels)

By the way: 1 inch = 2.54 cm. Did you know that you can also perform conversions on Google? href = "http://www.google.com.au/search?hl=en&q=9+in+in+cm"> Try it yourself.

pixelling happy!

Steven Pam is a commercial photographer and founder of Smartshots commercial photography. He is based in Melbourne, Australia, and specializes in people, aviation and music photography. Steven has over 10 years experience working with clients in the UK, USA and Australia, from small businesses to national publications and publicly listed companies. For Steven’s free 20-point smartguide to organising a commercial photo shoot, visit http://www.smartshots.com.au

What is the song Canon Ixus ad?

Could someone please tell me the title of this song: http://www.youtube.com/watch?v=3CfoFikiDhI THX
My Little Pony feat. Bedroom Eyes – A Song For You On Your 40th Birthday

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