Is this what you are looking for:

http://shop-uk.ricoh-imaging.eu/cap-for-battery-grip-d-bg4.html

The D-BG4 is the grip for the K-5 & K-7, though confusingly that page lists it as compatible with the K200D.

I'm no expert, but a longer focal length allows you to be further away from the subject. So while a 100mm and 35mm macro will give a similar sized end result you need to be 3 times closer with the 35mm.

If you hope to capture skittish creatures a 100mm may be a better option, however if you find you do most of your photography at 35mm or 50mm then they may be better suited to your other photographic endeavors.

Having looked at his flickr images a lot of these were taken with a reversed 50mm prime. In which case you can buy the basic equipment quite cheaply. You just need a manual 50mm lens and a reversing ring, once any lens is reversed all auto features are lost so you need a lens with a manual aperture setting.

Hope this helps, I'm sure someone will expand on this.

Neil

Having been a design engineer, in a previous life, I couldn't help but start thinking about the practical problems this represents and trying to think what problem it solves.

You would need a sepperate battery for the screen and lens mount.
Constant wireless coms = high battery drain
The detachable screen has limited use - self portrait
1 hand holding screen & 1 hand operating touchscreen &1 hand moving lens to frame photo - dosnt work.
If it were easy to design a lens mount that accepts multiple lens fittings someone would have done it already
How is the lens mount going to ballance on a tripod?

Its a nice idea but too impractical to impact the current market, however I could see cameras coming out with WiFi and an app to allow controls and liveview to be used from a smartphone

Ahh missed that! But I was looking to the future, I hope they limit the number of XS lenses and focus on DA/FA, but I can't believe they dont plan to release another XS lens in 2012/13.

Intresting... though the fact that it does not include any XS lenses probably means this is already out of date.

Thanks for the welcome. Now all I need to do is avoid LBA.

Hello all,

I've been a forum lurker on and off for a few years. Recently upgraded my K100d to a K-7 and loving it. Currently I have my old 18-55 kit lens and an FA 80-200 f4.7-5.6 lens. I enjoy playing with my camera, however I still think I have a fair way to go before I can consider my self an amature photographer.

Neil