The features are the same, i've no idea if there is a differnce in build quality?

I also only see the aputure for £69 on ebay but that's too expensive this a far better price link
The canon 450D, 500D & 550D use the same connection as the Pentax camera's


ps. i see a differnce aputure can only be set up to max 399 photos and the other one to 999

Would you like to shoot video if so your list will get smaller?

Thanks Algi for the laughs

Eye-fi is good for most things but is not a substitute for a good tethering program, like you've already said.
I assumed it could send live view over the cable, i hope the tethering program for the 645D can do that... would be really interesting to see that the program could control the AF.
You simply click on the Live-view where you want to focus and the PC does Contrast focus on that part of the screen. That would be so useful.
You might even can program it to focus bracket

With Lightroom you can say it should watch a folder for changes, not sure if it works real-time or not.

Oh so you know what i want, what do i want then?
Ever heard of wireless USB?

How would you watch the screen/live-view 100 meters away?

Isn't mega apochromatic just a term?
What's the difference with a normal apochromatic?

I think adapting one is out of the question, you need to work so precise and you are change elements of a lens so who can say that you don't need to adapt the other elements as well, you are probably looking at reconfigure the complete lens... good luck with that

Many lenses these days have apochromatic and/or aspherical elements, what focal length do you want?

This the DA 17-70 for example, it has both.

Only if you take your laptop with you on hikes
It's mostly used in the studio, think about making photos of products and such.
I don't think it's very useful for portrait but that's me though.

That's a good question i know some stores in the Netherlands that have them but I don't shop in the UK so i don't know.
I know you can find them on ebay or else you can buy them here and let them ship over.

They are around €60 (around 50 pound) in the stores.

Nope this is something else.

With this you can connect your camera to the computer and use your computer to controll the camera.

A digital wired remote would be the handiest, you can give it a specific time or it shows a times when you press the button.
This one for example link

Tim, thank you very much that was most helpful.
Will tackle the points that i can this week, hopefully i can improve them more.

Thanks, I took a bit of a risk with the longer shutter speeds but it seem to payed off quite a bit, i also like the movement in them or else they will be quite static.

I can remove the mic, no problem, consider it done