I have a Raynox HD-7000Pro .7x wide angle lens that I want to use w/ a Canon A590 IS.

I had used this successfully with my Canon Powershot S400 (using a special mounting adapter of course). The lens has 58mm mounting threads. Can I use this lens with the A590?

Perhaps with a similar tube adapter. But as you know, the downside is, that this will cause your camera to have to be compensated in it's exposure settings because of the loss of light by 1-2 stops. And depending on the quality of the glass in your teleconverter, you may also run into clarity issues. You will certainly run into some "barreling" issues at the extreme end of your focal length. this will make the image look like you're looking out of a barrel. This can also happen with wide angle converters as well.

To be honest, I don't recommend them because the tradeoffs involved simply outweigh the benefits in my mind. And you can always use software to crop what you need.

James, thanks for your response. I'm afraid i don't know much about exposure settings or stops and such.
This lens was working well for my real estate needs - for example i need to get as much of a room as possible when taking pictures for the listing so i would just attach the adapter to my S400 via the tripod mount and start shooting.

However, the S400 has stopped working so i've been looking at the A590. There is a 52mm tube adapter available... but my lens is 58mm. Could I add a 52 -58mm step up ring and then use my lens? What might be the effect of the extra focal length? Again, this is a non-critical application (wide angle room shots for real estate listings), but i am used to getting sharp shots with no distortion with this lens on the S400 so it would be nice if i could port this capability to the A590.

I haven't been able to find any 58mm tube adapters for the A590. Perhaps I'm not looking in the right place.

I appreciate your response.

Take a look at http://www.lensmateonline.com/newsite/index.html - I am not sure if they have a proper tubus for the A590, but they at least support the Raynox

Or else, take at look at http://cgi.ebay.com/UV-PL-Adapter-Set-f-CANON-Powershot-A590-IS-A570-IS_W0QQitemZ260337747633QQcmdZViewItemQQptZLH_DefaultDomain_77?hash=item260337747633&_trksid=p3911.c0.m14&_trkparms=72%3A1199%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318

well just remember the trade-offs. The downside is, that this will cause your camera to have to be compensated in it's exposure settings because of the loss of light by 1-2 stops. And depending on the quality of the glass in your teleconverter, you may also run into clarity issues. You will certainly run into some "barreling" issues at the extreme end of your focal length. this will make the image look like you're looking out of a barrel. This can also happen with wide angle converters as well.