Close up lens/filter

Hi there,

I've just bought a grade 4 (is that the right termonology?) closeup
lens from Jessops and was looking for some advice.

Firstly is using this filter likely to degrade my pictures too much.
Some people have said that they give you a significant loss of quality
while others have said that it's hardly noticable.

Also is a filter from jessops likely to be of a resonable quality or
should I realy have gotton a more expensive one from a well known
manufacturor?

I'm using the cannon 28-90mm lens I got with my EOS kit. What focal
length would be best to use in combination with the closeup lens in
order to photograph plants/flowers. I've beeen using the mas focal
length but was wondering if it matterred?


sys