I have CorelDraw 11. and need help understanding how something works with the File size of Corel Documents?
If I import a photo into CorelDraw and then I go to Bitmaps and then RES Tab. Then in here I make it 2 inch Heigh and 300 DPI and save this as a CorelDraw DOC. the files size is 752 kB.
Now if I re open this same CorelDraw Document and click on the photo and the drag the corner handel in to shrink the photo and save this CorelDraw Document again.
If I check the file size again of the Document it is still 752 kB why is it the same size?
I know it is the same photo in the Document but I did drag the handels and made it smaller so I thought CorelDraw would then make the Document smaller.
If
Not necessarily since the bitmap has not bee re-converted to a bitmap and given a new resolution after converting. You see, since you left the sample resolution alone it probably increased but the proportion was decreased keeping the balance the same hence the same file size. Try choosing 'Convert to Bitmap' setting and pick a resolution like 100dpi when the image is smaller then see a different document file size.
Thank you for getting back to me I know if I change the RES. or photo size properties the CorelDraw Document will be smaller.
But I just never understode why when you just Drag the corner handels in and make the photo smaller why this never makes the CorelDraw Document smaller?
I did hear that before that if an image is say 2 inch Heigh at 300 DPI and you drag the corner handel in the Physical size will get smaller. But the Res. will get Hiegher and I do not know why or understand it?
I know this is what is going on but how does this make the RES. go up?
When you drag a corner handle of a bitmap in CorelDraw ... the number of pixels does not change! So if you reduce the dimensions of the bitmap the resolution is therefore increased. For example...you have a 600px x 600px image and it is 4" x 4". This means the resolution is currently 150dpi (ppi). If you drag a corner handle and reduce the dimensions of the bitmap to 1" x 1" there are still 600px x 600px and therefore the resolution is now 600dpi.
HTH
Best regards,Brian.
Thank you for getting back to me and I do understand you a little more then I did. So if I have a image that is 2. inch by 2. inch at 300 DPI x 300 DPI I get even if I drage it to make it smaller it will still have 300 DPI by 300 DPI in it.
So am I right if you drag the image to make it smaller the 300 DPI by 300 DPI is still there but it takes a higher RES. to show it?
And PS.... I see your Avater is the Map of Australia is where you are from? I ask because I am from the USA but I love love Australia and I have never even been there?
Just to clarify my last response further...we are not really "spacing" pixels... but resizing pixels. There are no spaces between pixels in a bitmap.Therefore, to make an image larger and therefore have less pixels per inch... you are actually magnifying the pixels. This is why an image becomes pixellated and blocky looking if you enlarge it too much by resampling an image.
I apologise if I created confusion using the word "spacing" in my last post.
Thanks Brain for all you help you did make things a little clearer for me but I still am a little confused.
I would still like to go over some things with you but I do not want to make this Post go on and on and some Forums do not like when people do that.
Would it be ok for you to give me an e mail that I could reatch you at? And I always did want a
And I always did want a Pen Pal in Australia?
biferi said: Thanks Brain for all you help you did make things a little clearer for me but I still am a little confused.
Maybe this diagram will explain things. The cyan square is 600px by 600px and measures 1" x 1". The yellow square the same square dragged on one corner to become 2" x 2", still maintaining its 600px x 600px.
Thanks again Brain for all the help I would like to ask what you use CorelDraw for? Is it for your Job what do you do?
Thank you for the help do you use CorelDraw for Work or how do you use it?
In addition to Brian's excellent explanation, I'd like to add a couple of things:
Scaling a bitmap in a vector based program, like CorelDraw, will keep the number of pixels but change the size of each pixel.This because a vector drawing doesn't have any fixed grid that each pixel has to fit into.
In a bitmap editor, like Corel PhotoPaint or Adobe Photoshop, the pixel grid size is fixed, and therefore the number of pixels has to be reduced (or increased) instead when you scale.
I believe that there is quite a number of posts regarding this theme but... to simplify things. There r 3 things on which image depends: size as in dimension (mm, cm, inch, etc), pixels and dpi (ppi).
When u set 2 of them (which r important to u / for example - u need image in 3x3 cm and at 300 dpi, pixels will set automatically) third will always be set automatically. That way u have control to adjust image for your needs.
Something similar is happening in CD. When u scale image (not resample), image is smaller with higher dpi (by default). It is still the same image and it still occupy the same amount of space (in KB/MB). But if u resample it, than outcome will change depending which 2 of 3 characteristics u set...
Ronny Axelsson said:Scaling a bitmap in a vector based program, like CorelDraw, will keep the number of pixels...
Hi Ronny, I like your image, but I wonder my version helps: there are no white spaces between pixels (less potential confusion) and also shows how downsampling permanently removes color info.