$3.99 from Bitwerkz 
AppCraver.com: Score 9/10
Photography Gadgets: Field tested and highly recommended.
CNET Reviews: One of the five favourite iPhone photo apps.
iLounge: One of eight good to great new photography apps.
Photojournalists have a saying, “f/8 and be there,” meaning that being on the scene is more important than worrying about technical details. Yet with f/8, the depth-of-field and hyperfocal distance calculator for the iPhone and iPod touch, you’ll be there with the depth of field spot-on, too! Anywhere, anytime!
With f/8, all parameters and values are shown on a single screen with no scrolling required. All calculations are performed interactively in real time for maximum efficiency. The concept of camera bag provides fast access to the bodies, cameras, and lenses regularly used.
f/8 comes with presets for more than 800 camera models from Canon, Casio, Epson, Fujifilm, HP, Kodak, Konica, Kyocera, Leica, Minolta, Nikon, Olympus, Panasonic, Pentax, Ricoh, Samsung, Sigma, and Sony. There are also presets for various film formats (i.e., 35mm, 6×4.5, 6×6, 6×7, 6×9, 4×5, 5×7, 8×10), and cinematographic formats (i.e., 16mm, Super 16, 35mm). Furthermore, by choosing a circle of confusion (and, optionally, built-in lens) directly, camera models currently not listed can be user-defined. For lenses, f/8 allows not only the focal lengths to be specified but also their maximum aperture and minimum focus distance to conveniently adjust the range of input parameter allowed.
NOTE: f/8 does not use or manipulate the camera of the iPhone.





iPhone Photography App Watch (March 22, 2009)
f/8 DoF Calculator – This is the depth-of-field and hyperfocal distance calculator for the iPhone and iPod touch. In this upgrade there’s added support for teleconverters, extended minimum focus distance to seven meters, and more. …
http://www.imaginginsider.com/?p=88143
iPhone Photography App Watch (February 26, 2009)
PhotoWizard – A photo processing tool to add special effects to your images. Cost: $0.99. Photo Brush Lite – The Lite version of Photo Brush that contains a smaller selection of brushes. Customize your photos with the touch of your …
http://www.imaginginsider.com/?p=86208
iPhone Photography App Watch (February 6, 2009)
f/8 DoF Calculator – Depth of field and hyperfocal distance calculator. Cost: $3.99. Photo Show – Create slideshows on your iPhone or iPod Touch with ease. Cost: $1.99. Ghost Camera Lite – A ghost will appear in your photo when you take …
http://www.imaginginsider.com/?p=84625
Apps On Sale In The App Store on 01/30/2009
This is your daily serving of iPhone and iPod Touch applications on sale. Today, iPhone Download Blog is bringing you the latest apps that are currently on sale in the App Store. Some of them are even free! If you were hesitating about …
http://www.iphonedownloadblog.com/2009/01/30/apps-on-sale-in-the-app-store-on-01302009/