Interesting indeed. Obviously the pace of things is hotting up.

This is what I fear the future may hold, to our detriment. Manufacturers can avoid making the product complete on its own and to get the right results from it we might need software. This could apply to lenses too. Too difficult to make the lens with full corrections? No problem, just put the corrections in the software.

The when we buy a second hand camera or lens we'll need tro investigate it, get the apprporiate software, and of course it won't work properly with more recent lenses and bodies, and so on....so we have to buy new.

I'm not liking the thought as in the very long term it could be a possibility.

greynolds999, even a RAW capture has some processing by the camera to translate the black and white image into a colour one that makes sense - this involves some clever electronics taking the Bayer filter information and doing its trickery, before the file is ready to be used. The AA filter will be programmed into this process, so if it wasn't there it may have some strange side effects.

Ultimately the AA filter is there because it needs to be, to avoid interference patterns on fine detail. We used to see something similar on tweed jackets on TV - that shimmering, distorting effect on the fine detail.

The lens you've bought should just work, simple as that. If it doesn't then it may well be faulty.

However, first, using a dry soft cloth, carefully clean the electronic contacts on the lens and on the camera mount. Then try again. It could just be a dirty contact.

I wouldn't have one removed as it's part of the imagining process in the camera. If it's designed that way that's one thing, but if it's not then taking it out would seem unwise.

There is a function in the imaging process for the AA filter.

I thought the 645D had no AA filter?

http://www.dezeen.com/2012/02/02/k01-by-marc-newson-for-pentax/

A different take on what the world thinks.

The Jessops offer has finished, so the Leads to Deals thread has gone.

[IMG]http://i240.photobucket.com/albums/ff250/johnriley1uk/051-77mm-1-800px.jpg[/IMG]
In gorgeous condition, boxed and the actual lens that I used for this ePHOTOzine test, so you know exactly how it performs:
http://www.ephotozine.com/article/smc-pentax-fa-77mm-f-1-8-limited-lens-16892
This is the Japan-made silver aluminium finished lens and is for sale at £600 in the UK, including Royal Mail Special Delivery. The price for insured shipping anywhere else in the world is £650.00.
Reason for sale is that I have too many lenses covering the same range and I actually need to continue to ever-ongoing tweaking of what I use. The 77mm in itself is brilliant, one of the best lenses I have ever used.

You have the software to begin, but if you have Photoshop there's always the RAW converter within that as well.

Have a go and ask questions as you go along?