It could also be the sound of the shutter release/mirror?
Maybe a study is needed on the matter... whist it was a study like this link but well it has to do.

Yes the optics are 90% the same, only the lens coating is different so far as I know.

photozone.de has a review of the DFA100 and the Tamron 90 on the Pentax.

What about these link, has anyone done business with them?

Just checked what the cost would be with P&P + import and the total became €32 (£27) for registered airmail so still very good.
And it's Toshiba card which I like to have but are extremely hard to find

Yes I do that Ken and that's one of the reasons I get sick with those EVIL cameras, the LCD viewfinders lags a bit behind and you really notice that with two eyes open

However keeping both eyes open don't help them stop blinking

Tim, just found out that they don't work in 64bit version and my 32bit version of PS has a bug in it so can only use 64bit at the time
They have however an lightroom plugin which i'm trying now

Yeah it's a fine little beast

Angela glad to see the camera is pushing you to use it and have fun using it, that's the most important thing.

146 and not one binned is impressive... I take 300 on a day and only 40 or less are kept
When shooting a portrait of someone I always take 2 or 3 shots after each other, if I only take one I'm always so lucky that the person is blinking
Now I've make it into a habit of taking at least two photos when pressing the shutter so almost always half of the photos I take end in the bin.

Maybe?

Didn't know about that software Tim, will give it a try, thank you.

Official Pentax release link

Tim you should retry it with the Takumar 85/1.8, that one has a better bokeh from what I've seen.

The ideal would be the same RAM as already in the computer, since it's there own brand I don't think it would be the best, it will work as it should though.

Also it's dual channel so you should link the two crucial rams together and not link a crucial with the one already in it.