I'm not sure if you emailed me the price, if you have I can't see it there

Anyway, yes, I am interested!

Hmm, someone pipped me at the post on ebay. It would have been nice, but never mind. I might just wait for the new lineup coming out next year...or the limited...or...oh, I don't know

Thanks, the 31mm limited might have to wait. I think at this stage I need to fill that Gap, and I think this is the lens for it.

I'll let you know how I go.

Is about 400 pounds a good price for this lens (used)?

And has anyone here used it? Comments?

Thanks.

Well, I can give you a very definative answer and a reason for it, but I don't know how good I am at describing it...

I assume you understand that film reciprocity failure occurs because film exposure works on a logarithmic curve (note: same as film characteristic curve). When something is recorded on film at it's minimum recording ability (the toe) exposure takes longer than typical exposures we are used to (taken at the straight line section). Never mind about the upper section (the shoulder) for this description...

In digital cameras, the sensor records information in a linear curve, i.e. no curve at all. As soon as light reaches the sensor, it records it at the same rate regardless of whether it's 1/1500000000th of a second or 1500000000000 minutes. Hence no reciprocity failure in digital cameras.

Of course as mentioned, digital noise becomes a problem. As with any electronic gadget, heat occurs when it's running for a long time.

Noise isn't just a result of photo sites being placed close to each other, or their size, but when heat occurs, more disruption is made to the signal, and that is the reason for noise occurring more at longer exposures.

Hope that helps.

It totally depends on each others circumstance.

As I'm going into medical hopefully, a full frame sensor would be ideal. There are issues to do with macro (true measurements, photographer/doctor interpretation of results etc) which get a bit harder to deal with. Of course, if a skin rash image is taken at a higher ISO we start to wonder whether that dot is the rash or noise.

On the other hand, I'm quite used to my 'D and when I occasionally want to use 18mm at a true 18mm, I whip out the Mz-5n and deal with the slight vignetting the 18-35 FAJ gives, when I scan it and play in PS.

To most users, I think the APS-C sensor is fine, to many pro's it isn't.

Personally, I need the ability to call myself a pro to convince my wife I need $2000 lenses and the same would go for a new FFsensor body.

She did however begrudgingly let me spend more than Au$2000 on the *istD!

Focussing to infinity is one issue, but more important maybe is that you need the coverage of the lens to cover the film once you shift up/down

just 2c worth.

Thanks all, looks wonderful.

Yes, I understand this, but a lot seem to put their thoughts in the normal SLR section. Perhaps it could be defined a bit more or something to clarify that DSLRs should indeed go into digital.

Just a thought.

For the moderators, and of course anyone who wants to comment.

Could we please have a sub-forum specifically for Pentax DSLR cameras? I've wondered this from when the *istD came out. I've always been frustrated when I'm specifically looking at DSLR posts and have to switch in between the "SLR" and "Digital" sub-forums.

It would also take care of the K10D and the new MF digital.

Other than that of course, it's the most easy going trouble free site in the www photography world as far as I have found.

A big thanks to everyone who makes it that.