There is no point reiterating what has already been said, so please stop doing it, it only rekindles the flames.

I mention this without naming names to avoid embarassment to anyone. This is not referring to you gartmore!

The F1.9 version is the older one, available as Super Takumar and Super-Multi-Coated Takumar versions. Large apertures are soft for the purposes of portraiture, but the lens sharpens when stopped down.

The f1.8 is a S-M-C Takumar and is razor sharp at all apertures, as this was the new trend in 85mm lenses.

Either way, a relatively uncommon and usually expensive offering that's worth picking up if you find a good one.

Fascinating to dip into the "Members Online" just to see who floats around here in the early hours.

Greetings to you all!

I think we're getting tied in a knot here, so I'll return to it tomorrow with some appropriate references for you to examine should you wish to do so.

So this hasn't been very pleasant has it?

Clearly some of us need to remember better manners - we are all guests here coutesy of Pentax User, who provide this excellent facility free of charge.

Personal attacks will not be tolerated on this forum.

White might be quite a good colour to do weddings with and be noticed - not quite the Gold plated Rolleiflex, but certainly different.

Unfortunately it may not be the best camera for that purpose!

No, that's the whole point. That's not right. Perhaps if you drew such a scenario on paper you would see why.

Yes, but not with the same lens at the same distance!

I can't follow this up right now, so later I'll refer you to a book that answers all the questions. Not for the squeamish though....

That's not the body cap. It's a transit cap to protect the camera innards until you put a lens on it. The Pentax K body cap is a bayonet fit and can still be purchased as an optional accessory.

Maybe few people use them after getting the camera, so it was deemed a waste to supply one unless we really wanted one.

The confusion (not the circle of confusion!) arises because you are assuming that focal length affects the DOF and although in a general sense this is true, it's actually the magbification that's relevant.

You have two cameras side by side with identical lenses, but different formats. So the magnification is different. They are showing different pictures in the viewfinders.

Put that 85mm lens on a 110 camera (if you could) and imagine how your argument crumbles then - you would have a moderately long telephoto.

Put it on a 20" x 16" plate camera (if you could and it would cover the plate) and you would have quite a wide angle.

That wasn't the point Terry, the point was to make sure that an inaccuracy wasn't propogated, which would potentially add to confusion. If misunderstandings are left then it's of poor service to those who want to understand.

Unfortunately, considerations of DOF and format are quite tricky to explain and to understand, which is why we have revisited it several times over the past couple of years.