Chortleberry
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Image resizing! | Forum |
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Forums: Techniques: Image resizing!
| Showing 1 - 9 of 9 posts. |
 TinoPosted: 8th Aug 2008 Time: 9:14 PM |
Alreet Peeps! My uploaded pics are Huuuge! to say the least. What's the best size to make them in both 'portrait and landscape' i need to know the sizes in pixel dimensions cos i'm scrolling for scotland. I have messed around with the pixel dimensions but it's alway's went dodgy and resizing the image in cm or inches doesn't make a blind bit of diff. I know i'm the best photographer you guy's have ever seen but can we keep this discreet? It's a bit unprofessional (is that spelt right) |
 WheelybirdPosted: 10th Aug 2008 Time: 7:55 PM |
This site automatically resizes photos to be able to fit comfortably on a 1024x768 display.
Really you shouldn't want to resize your image just to look at it on your PC as any image viewing program can simply scale it for you. You only need to resize if you're going to be putting your photo on the web somewhere and they specify image dimensions. If you do need to resize, image size in centimetres usually determines the print size and resolution. To affect the size of the image on the screen you need to resample the pixel size. Resampling gives much better results than simple resizing. |
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Tioadli Posted: 12th Aug 2008 Time: 12:21 AM |
Wheelybird - What is this resampling of which you speak? |
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Wheelybird Posted: 12th Aug 2008 Time: 9:57 AM |
It is this:
en.wikipedia.org/wiki/Resample#Bitmap It's a clever way of changing the number of pixels in a bitmap. Without resampling resizing would just mean dropping rows or columns of pixels, resulting in a jagged image. |
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Tino Posted: 12th Aug 2008 Time: 8:31 PM |
Finally i can stop worrying and put that to bed.
You are the man in the know,the dude in the chair wheelybird. I know what you mean about that jagged edge shenanigins. Ta Tino. |
 GoodwitchPosted: 6th Sep 2008 Time: 5:07 PM |
Can anyone help please?
I need to print out a photos at 1400 x 1050 pixels. My photos at the moment are 3664 x 2448 and approx 3.7 mb. When I chamge the size of the photo down to 1400 x 1050 the MB reduced to 1.4 or 1.5mb. I do not have photoshop. I use Picnik online, photoscape or Photofiltre. Can anyone tell me how I cam maintain a 3.7mb pic but resize to 1400 x 1050? Thanks Goodwitch |
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mortcdz Posted: 6th Sep 2008 Time: 11:54 PM |
Why do you need to maintain the size of the file at 3.7mb? The file size is in direct relation to the number of pixels (plus taking into account file format, any algorythms to reduce size and depth of colour).
From Wikipedia - Image file size—expressed as the number of bytes—increases with the number of pixels composing an image, and the colour depth of the pixels. The greater the number of rows and columns, the greater the image resolution, and the larger the file. Also, each pixel of an image increases in size when its colour depth increases—an 8-bit pixel (1 byte) stores 256 colours, a 24-bit pixel (3 bytes) stores 16 million colors, the latter known as truecolor. Image compression uses algorithms to decrease the size of a file. High resolution cameras produce large image files, ranging from hundreds of kilobytes to megabytes, per the camera's resolution and the image-storage format capacity. High resolution digital cameras record 8 megapixel (1MP = 1,000,000 pixels / 1 million) images, or more, in truecolor. So if you want a 1400x1050 image size and have maintained the same resolution (dpi) then the file size will naturally decrease |
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Goodwitch Posted: 6th Sep 2008 Time: 11:56 PM |
Hi Mark
Was getting totally confused...sorry - the 1400 x 1050 is a resolution size I need to get maximum quality viewing on my pc - not for printing! Sorry - still learning..... cheers Linzi |
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mortcdz Posted: 8th Sep 2008 Time: 12:19 PM |
Nothing to apologise for - isn't one of the underlying purposes of photography websites to learn from others? I'm pretty sure there's more I don't know about photography than I do know!!! |
| Showing 1 - 9 of 9 posts. |
