Image resolution & joining PPT files seamlessly

[LV]

I'm doing my first big presentation - about photography,
so image quality is key. I have 2 questions:

1) I'm using a projector/laptop setup. Are the
resolution issues the same between a screen and a
projector? In other words, will the photo projected at
300 dpi seem better than a photo projected at 72 dpi?

2) Since my files are really big, I might have a problem
running this thing on the setup I'm borrowing (not as
good as the setup I have on my desktop, where I'm
creating it). I was thinking I'd have to interrup the
presentation, and load each file. I think this would
detract from the flow. Is there a way to seamlessly join
the 3 files together and make it look like 1 file?

Thanks in advance for your help.

 

[Suvodip Moitra]

Dear User,

You may go through this page http://www.rdpslides.com/pptfaq/FAQ00415.htm

Suvodip Moitra

 

[Terry Irwin]

The resolution of your presentation is determined by the
lowest resolution in the system presenting it, in this case
the projector. Most resolve at 72 dpi, though some at 96
dpi. There is no advantage in using any higher resolution.

However, check the dimensions for the projector. Is it 800
by 600 or 1024 by 768. When you set up PowerPoint, in the
page set up you should choose the correct dimensions for
the projector (800 by 600 equates with 11.11" by 8.33" and
1024 by 768 is 14.22" by 10.66"). This will make your
images the correct dimensions when projected.

You should ideally resize the images using an image editing
program before adding them to PowerPoint. Use the
dimensions above to fill the screen, or lower sizes to fill
part of the screen.

Finally, if you mean that you have several presentations
that you want to string together into one, use the command,
insert>slides from file and follow the instructions.

Hope this helps.

Terry

 

[LV]

Thanks so much for your reply - great info.
One thing: what I meant about "joining" presentation
files is because I didn't bring down the image resolution
and the files are really big, so I had to divide it into
3 files. From what I see, I can bring the JPG's down in
size.

 

[Terry Irwin]

Depends which version of PPT you are using. In the latest
version click on any image and look on the picture toolbar
for the icon "compress pictures". Choose "all pictures",
"web/screen", "compress" and "delete cropped araes". Save
the file as a new file. Compare the sizes now.

You can also reduce the file size by a number of other
means: see http://www.rdpslides.com/pptfaq/FAQ00062.htm

Terry

 

[TAJ Simmons]

LV,

Resolution (forget dpi, think pixels) tutorial
http://www.powerpointbackgrounds.com/powerpointgraphics.htm

Linking presentations seamlessly together tutorial
http://www.powerpointbackgrounds.com/powerpointlinking.htm

Cheers
TAJ Simmons
microsoft powerpoint mvp

awesome - powerpoint backgrounds,
free powerpoint templates, tutorials, hints and tips etc
http://www.powerpointbackgrounds.com

 

[Adam Crowley]

The resolution of your presentation is determined by the
lowest resolution in the system presenting it, in this case
the projector. Most resolve at 72 dpi, though some at 96
dpi. There is no advantage in using any higher resolution.

Dots per inch are irrelevant with a projection system.
If I position the projector so the projected image is made of 72 dots (or
pixels) per inch I can make this less than 72 by moving it further away from
the screen.

However, check the dimensions for the projector. Is it 800
by 600 or 1024 by 768. When you set up PowerPoint, in the
page set up you should choose the correct dimensions for
the projector (800 by 600 equates with 11.11" by 8.33" and
1024 by 768 is 14.22" by 10.66"). This will make your
images the correct dimensions when projected.

Unless I misunderstand what you're saying this is unnecessarily complicating
the issue.
If your machine's display resolution is 1024x768 and your slides are set to
a 4:3 ratio page set up (e.g. the default 'on-screen show') then a 1024x768
image inserted onto a slide and sized to fill it will be scaled correctly.
Changing the page size in inches, but maintaining the aspect ratio, will
have no effect.

You should ideally resize the images using an image editing
program before adding them to PowerPoint. Use the
dimensions above to fill the screen, or lower sizes to fill
part of the screen.

Yes. A full screen image need be no bigger than the display resolution of
the PC/projector.