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Re: Policy Assistance

for

From: Emma Duke-Williams
Date: Jul 5, 2006 12:00PM

Hi Michael
I suspect you'll have to have some sort of technical guidelines in
place; from what I can see you've got a couple of alternatives.
1: Put the large version of the image in the page, but reduce it via
height/width settings to the size you want it;
advantage: When someone zooms, you won't get the scaling issues
disadvantage: Will take ages to download.

2: Have the image the size that you want & have a link to a larger
version - rather like using a thumbnail, so that people will have
access to the much larger one, so less need to enlarge & less
pixelation if they go bigger.

3: Combine the two in the way that they've done on the site that I
pointed out the other day:
http://persistent.info/files/20040508.magnifier/
The drawback is that you still have the download time issue, but it
looks neat & you've got a magnifier - however, rather than magnifying
the underlying image, it's showing you the same bit of the zoomed
version (which you can also see separately).

How you'd write a policy is another matter - if the policy is online
could you have some samples & get them to have a play & see what the
problem is so that they could select the best solution (also showing
them the issues that arise when you use the zoom in Opera?)??

Emma

On 7/5/06, Moore, Michael < <EMAIL REMOVED> > wrote:
> Good morning folks,
>
> We are working on accessibility policy for our agency and have a
> question about how to best convey the idea that things must be
> accessible when using screen magnifiers as well as screen readers. We
> have found through testing that when images are used to convey
> information and the image does not scale well access is difficult or
> impossible when using screen magnification alone.
>
> Any suggestions would be greatly appreciated.
>
> Mike Moore
>
>
>
>


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