....but they go and shoot themsevles in the foot at the outset-
who wants a TOY lens- conjours up a plastic tatty "MY FIRST SONY" image.
Has the original meaning been lost in translation or is this an acronym/pnemonic for some technical jargon?
Neil

Hi Folks,
a bugbear with previous Pentax DSLR's has been the poor autofocusing speeds.
The K5 shares a new AF system with the 645D.
Is the new AF system performing well in the 654D?
Am I right in that the speed also depends on the non too quick lens mechanism?
Will this not then necessitate a higher spec. range of autofocus lenses to get the best out of the camera?
Neil

The problems with the e-dials-

try turning off "auto EV " if set to on.
I had the same problem as while back this year after an earlier firmware upgrade.
I was advised to turn EV off and it did the trick-
maybe it will do the same for you guys-good luck

Neil

Of course, after 4 pages of advice-

just buy a Mac!!!

Neil

thanks for the input guys-
Alistair, I liked your shot of the Clifton S. Bridge ( dust spots notwisthstanding).
I am just not quite sure of the maths that you used regarding the relationship between the flowers at one foot and the decision to focus 3 feet away.
One third into the picture is the near bridge tower.
Using the one third rule, that is where I would have selected as my focus point.
Now I am really confused
Neil

woops!

of course- I forgot that selecting the camera body in the dof program automatically compensates for the correct coc.

Silly me..................

Neil

Thanks for the comments.
Alistair- do you mean 1/3 in?

Although I have tried this rule of thumb, I find that the foreground turns out rather soft.


So far, the best I have come up with for online advice is the following

http://www.cjcom.net/articles/hyperfoc.htm[/link]

I am trying to approach this scientifically now as the experimental route aint working for me!!

Regarding the dof tables, surely there must be correction factors for the digital sensors?

Neil

Sorry for asking such a basic question but I cannot get a clear picture from any website-
I am trying to get to grips with the subject. I have a K7 coc=0.02.
I use both full frame and APS Pentax lenses eg both the AF ltd series and the DA*'s.
The scales on the ltd lens are of no use with a digital SLR because of the crop factor and the modern lenses have no scales.
I have looked at the Dofmaster website and online calulator but I do not know how it would know what type of lens I am computing for other than the focal length.
It was my intention to download the program to my I-Phone for use in the field but now I think that I should make a crib card for each and every lens.
Any ideas?
Neil

thanks guys.

I will try this out
Neil

Hi Matt
It is set to "on"

Neil