Image sizes

Briony

Briony

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3,869
Name
Nicki.
Edit My Images
Yes
Right I want to send some images and they have to be no more that 5 mb, the images I want to send are the following
5,364 KB
821 KB
4,316KB

are these to big or to small I really cannot fathom out KB from MB etc?:thinking::shrug:

If so what do I have to do with them?
 
5 MB = 5120kb

I would just send them as they are.
 
;) Thank you :thumbs:

can't be more than so how do I reduce the 5,364 to 5 kb? for a comp!
 
What operating system and what graphics software are you using?
 
Have just installed Lightroom also have Elements 2.0 and all the canon stuff the easy way please?
 
Ok in lightroom with the picture selected click on EXPORT and in export set the size and just nudge the quality slider downwards a little if it works out too large.

If a comp says 5000Kb then I wouldn't send an image 5000.1Kb and risk it being eliminated straight away.
 
Do you mean image sizes or do you mean file sizes?
 
Right just re read the rules and it says "images should not exceed the maximum of 5 MB in jpeg"
 
Just put the picture in your photo editor and click on 'image size or resize' Then just reduce the size of the image a little. It should tell you what the new size is.

Dunc
 
Briony said:
Right just re read the rules and it says "images should not exceed the maximum of 5 MB in jpeg"
Click to expand...

I think the rule is confusing. A jpeg FILE could be 10 Meg but the IMAGE SIZE could be 50 Meg for example. I suspect they do mean file sizes though. You'll just have to reduce the original in pixels and re-save to check the new file size. I would re-save under a different file name too.
 
Yes - a jpeg is a compressed format - the IMAGE size as I said is much larger than the actual file size on disk. When Alamy for example ask for 48 meg images as a minimum they are referring to the image size as reported by Photoshop whereas the compressed file size on disk could be 10 - 12 meg.
 
The normal things that effect the size of an image are:

Image size eg. 3000x2000 pixels compared to 800x600
Dots per inch - 300dpi or 78dpi for web use
Jpeg compression 1-10 (1 low quality - 10 High quality)

:thumbs:
 
dots per inch has no effect on file size. You can set the dpi to whatever value you want, all it does is indicate the physical, printed size for a given pixel resolution. Web browsers ignore DPI completely, it doesn't figure in web use at all.

Personally, I think this whole image size thing is misleading, I never use it and I actively discourage it in others. it tells you nothing about the image and it's meaningless without knowing the bit depth - which is usually 8 granted but it doesn't have to be - and there's no indication of what the resolution in XY is. X Y resolution is far more sensible.

File size varies with resolution, bit depth and the level of jpeg compression. If you're unhappy lowering the dimensions (pixel resolution) of the image, lower the jpeg quality. But watch the effect it has on your shot.
 
awp said:
Yes - a jpeg is a compressed format - the IMAGE size as I said is much larger than the actual file size on disk. When Alamy for example ask for 48 meg images as a minimum they are referring to the image size as reported by Photoshop whereas the compressed file size on disk could be 10 - 12 meg.
Click to expand...


But is the image size in photoshop more than the RAW file size, which is uncompressed?
 
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