menu boy wrote:
> "SpaceGirl" <> wrote in message
> news:...
>
>>menu boy wrote:
>>
>>
>>>"Dylan Parry" <> wrote in message
>>>news
an.2004.07.23.13.55.43.481755@dylanparry. com...
>>>
>>>
>>>>menu boy wrote:
>>>>
>>>>
>>>>
>>>>>Why is it when I put a bmp image on my site,
>>>>
>>>>First of all, don't use bitmap images on your pages. See:
>>>>http://webpageworkshop.co.uk/main/html_image_format
>>>
>>>
>>>I'm using a bmp for my own uses, not for people browsing.
>>>
>>>
>>>
>>>>How do you mean? If you mean, "how come when I print a bitmap image it
>>>>looks smaller on paper than it does on screen?" Then the answer is
>
> because
>
>>>>your screen resolution is something like 72dpi but your printer is using
>>>>300dpi, so the image will look around 4 times smaller on paper than on
>>>>screen.
>>>>
>>>>If that isn't the question, then I don't understand what you mean.
>>>
>>>
>>>No. I made the image in Photoshop 7 and its dimensions are 4.5" x 3.5".
>>>When I upload it, put it on a webpage and print it, it prints about an
>>>inch smaller on the paper at *any* resolution I have my printer set.
>>>When I print it from Photoshop, it prints normally.
>>>
>>>
>>
>>er... you cant measure images on screen in inches honey. What if I have
>>a 15" wide display running at 800x600 resolution. How big would your
>>image be in physical inches then? Now what happens if I increase my
>>resolution to 1024x768 on the same screen? Suddenly your image is 30%
>>smaller in physical inches. Now I run it on my 21" flat panel running at
>>1600x1200... your image would look tiny!
>>
>>You CANNOT measure computer graphics in inches, only pixels.
>>
>>PhotoShop will expand images when it prints them, as will other
>>programs, if your printer driver supports the feature. Basically you are
>>trying to achieve something that is not possible as it relies on
>>everyone on the planet having the exact same computer screen size,
>>running at exactly the same resolution, with exactly the same printer
>>and printer driver, AND exactly the same Operating System...
>>
>
> Since there isn't an infinite number of combinations screen sizes, printer
> settings and OS', one would assume there would be software that would
> make this possible.
Um, you can calculate the size that an image will print out based on the
number of pixels in the image vs the resolution of the printer. It has
nothing to do with monitor resolution. And printer resolutions can be
adjusted by the user.
An image 300 pixels wide will print out 1" wide on a 300dpi printer. If
you want that image to print out 5" wide on a 300dpi printer, then you
have to resize the image by 5 times or 1500 pixels -- which is
uncomfortably wide on the average monitor. If you have an image 100
pixels wide, then it will be 1/3" when printed out on that same printer.
Of course, it may just me me, but my Deskjet prints out webpages at
96dpi, not 300dpi. That 300 pixel wide image will print out at just
over 3" wide. The 100 pixel image will print out at just over 1". So,
the lower the dpi of the printer, the larger an image will print out on
a dot for pixel basis.
If you want to offer people images to print, make your images in various
resolutions (Coarse(96dpi), Medium(150dpi), Fine(300dpi) and, if you
dare, Photo(1200+dpi)) and then create links to the images for download
in the format of your choice rather than attempting to plug a
one-size-should-fit-all, non-web-friendly format image into a webpage.
Arondelle
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