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12/22/2003 11:01:00 PM · #1 |
| What size does a picture need to be to project effectively in a lecture hall type setting? |
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12/22/2003 11:03:23 PM · #2 |
I would think it depends on the dimensions of the lecture hall, the details that you want to represent in your pictures, and maybe lighting.
Also how close that the viewer can walk up to see the work. Last digital photo showing I was at the pictures were anywhere from 5 to 6 feet.
Message edited by author 2003-12-22 23:16:25.
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12/22/2003 11:14:48 PM · #3 |
| If you're using a digital projection system, size your files around the resolution of the device. There's no point in saving pixels the device can't display. |
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12/22/2003 11:25:16 PM · #4 |
what program are you showing the presentation in? I guess what you need to know is what dimensions the format is 4x3 or 16x9?
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12/23/2003 07:51:09 AM · #5 |
| I am scanning 35 mm slides to put into Powerpoint. Black and white scientific images (electron micrographs) lots of detail. I was wondering if there was a standard resolution. Ah ah - so maybe the digital projector has a specific size? |
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12/23/2003 08:00:51 AM · #6 |
Originally posted by emorgan49:
I am scanning 35 mm slides to put into Powerpoint. Black and white scientific images (electron micrographs) lots of detail. I was wondering if there was a standard resolution. Ah ah - so maybe the digital projector has a specific size? |
The digital projector probably has a natie resolution of either 1024x768 or 1280x1024; the former is more likely.
The best image will be obtained when the driving device (computer) is set to display the same resoluton as the projector. Most modern projectors do a good job of compensatng when the computer's resolution is higher, you just don't want the computer's display settings to be lower.
If your pix will be 1 per slide and take up most of the slide, try saving at 800x600, then "resize" or "crop" in Powerpoint. You will probably have a little unused resoluton, but not a lot.
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12/23/2003 09:55:43 AM · #7 |
As long as you are taking the trouble to get out the slides, clean them (or at least dust them off), put them in the scanner, adjust the scan settings, etc., you might consider making high resolution scans you can use for scientific study. There are lots of scientific image processing and analysis programs available, and even basic photo software has functions like contrast adjustments, find edges, and sharpening that can be useful. Depending on the circumstances, some of the students may be interested in a CD with high resolution images for their own further study. Be sure to save them in a format like tiff that won't introduce compression artifacts. Of course the scans themselves will take longer and the file sizes will be much larger; you'll have to decide the trade-offs.
While you're at it, consider the aesthetic side. I've seen some beautiful images made from colorized (and even black and white) micrographs. |
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12/23/2003 10:16:06 AM · #8 |
Originally posted by emorgan49:
What size does a picture need to be to project effectively in a lecture hall type setting? |
Depends on your monitor resolution, either 800 X 600 or 1024 X 768 pixels will work fine !
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12/23/2003 10:20:42 AM · #9 |
Originally posted by emorgan49:
I am scanning 35 mm slides to put into Powerpoint. Black and white scientific images (electron micrographs) lots of detail. I was wondering if there was a standard resolution. Ah ah - so maybe the digital projector has a specific size? |
Yep, the projector will likely have one or two specific sizes. You generally have to be relatively careful with Powerpoint presentations, as PP will rescale images/text/etc to fit the resolution of the target machine. Ideally you want to find out the resolution and design it in this resolution.
Also, try not to use too fancy a font, if you're transferring it to another computer connected to the projector (which may not have the font). If you're connecting your own notebook, this won't be a problem.
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12/23/2003 10:53:20 AM · #10 |
lots of great suggestions for you Ms. Morgan :) I'll give one more little bit of advice before I head out into the land of last minute Holiday shopping. If at all possible try to get in and rehearse your presentation a few times before the big show the more comfortable you are with your presentation the more comfortable your audience will be. Best of luck to you and Happy Holidays.
Sean
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