Lens Converters - single focal length?

[jasperm]

Hi-

I read something that indicated that when you add either the wide angle or telephoto adapter to the G3 zoom lens, you should use only at the extreme of the range (ie use wide angle adapter only with zoom at widest). In other words, that you cannot just leave the adapter on, and shift the whole range of the lens down (or up for telephoto). If this is true, this seems rather a pain - you would need to keep putting on and taking off as you took different shots, rather than just deciding that you need a wider range for a given subject matter.

Can someone confirm if this is true in general for these converters?

Thanks,
Michael Jasper

[Basiltoo]

It seems to me it never makes sense to use a supplementay lens to duplicate a focal length which could be obtained without that lens. The camera will always perform better without additional lenses. It may be a pain but that's how it is.