iphone dof calculator
Just add your camera model which includes all the pentax models and away you go.
I also use the sun compass app when i'm out and about.

Best Pentax Full Frame & APS-C Lenses
Here's a round-up of the Pentax Full Frame & APS-C lenses, we think, are the best in terms of per...
Posted in ArticlesPentax KF DSLR Camera Announced
Ricoh Imaging is keeping the DSLR very much alive with the release of the compact and weather-res...
Posted in NewsHD Pentax-DA Fish-Eye 10-17mm F/3.5-4.5 ED Lens Review
John Riley has been taking a wider look at the world with the help of the HD Pentax-DA Fish-Eye 1...
Posted in ReviewsHD Pentax-D FA* 85mm F/1.4 Lens Review
John Riley teams the Pentax K-1 DSLR with the HD Pentax-D FA* 85mm f/1.4 ED SDM AW lens for a day...
Posted in Reviews
Don
Member
Winterpeg Manitoba Canada
I'm finding my iPhone handy for geotagging photos as well, as it is easy to lift the gps coordinates off one image from the phone, and add it to a whole series of images from my dslrs....
Fired many shots. Didn't kill anything.