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Retail Price: $776.67
Deal Price: $389.95
Savings: $ 386.72 ( 50% )
Stock: Usually ships in 3 to 5 weeks
Manufacturer: Pentax
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Average Evaluation:  
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Batteries Included: 0
Binding: Electronics
Brand: Pentax
EAN: 0027075117280
Feature: 10-17mm fisheye lens with f/3.5-4.5 maximum aperture for Pentax digital SLR cameras
Is Autographed: 0
Is Fragile: 0
Is Memorabilia: 0
Label: Pentax
Legal Disclaimer: Warranty does not cover misuse of product.
Manufacturer: Pentax
Maximum Focal Length: 17
Minimum Focal Length: 10
Model: 21580
Publisher: Pentax
Release Date: 2005-02-15
Studio: Pentax
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Features
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10-17mm fisheye lens with f/3.5-4.5 maximum aperture for Pentax digital SLR cameras
Creates images with expanded perspective, with creatively deformed outlook and sharp pan focus
Image circle is designed to perfectly match 23.5 x 15.7mm CCD used in Pentax digital SLRs
Water- and oil-repellant SP lens coatings; extra-low-dispersion glass for superior sharpness
Minimum focusing distance of 0.46 feet; measures 2.8 inches in diameter; weighs 11.3 ounces
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Reviews :
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Evaluation: 
Conclusion: Super wide-angle with plenty of distortion.
Review: Super wide-angle with plenty of distortion. It is definitely a fish-eye. Was able to get the entire St. Louis arch from fairly close up.
Evaluation:
Conclusion: Impressive
Review: I purchased this to play with both the wide angle capabilities and the fish-eye views this creates with my K10D. The pictures thus far (roughly 100-120) have shown excellent quality. The types of pictures I've been able to take by purchasing this have impressed me!
The only issue I have seen is the images are dark when the sun is in the picture - which is easy to do when the sun is high in the sky. At 180 degrees of view, it captures a lot. Like with anything, one simply needs to check the shot before taking the picture and use the right lens for the situation.
Evaluation:
Conclusion: Fun Lens to Have
Review: Have owned this lens since December 2007 and have had a lot of fun with it. At 17mm, it functions like a conventional wide angle lens, but at 10mm it is truly a fish-eye. The flexibility cannot be beat! Image quality is excellent (color rendition and sharpness). It can produce some interesting perpectives once you learn how to exploit its characteristics.
The lens surface extends (bulges out) beyond the front rim of the lens which can expose it more than a conventional lens. However, Pentax claims that it has a special coating which is supposed to resist scratches. I am ultra careful and choose not to test the strenght of the coating!! The lens cap is a slip-on type vs. a clip-on type. The lens is a tad heavy, but solidy built.
The more I use this lens, the more pleased I am that I purchased it.
Evaluation:
Conclusion: Versatile, adds creative dimensions
Review: This lens can be used for many other photographic projects besides just landscape/scenic panoramas. Of course, some caution is needed when thinking about the lines, convergence, etc...but it is a fun as well as useful lens. It goes with me everywhere! Admittedly, it's not my "primary" lens...that'd be my Pentax SMC 18-250mm lens.
Evaluation:
Conclusion: Digital Fisheye for Pentax
Review: Every bit as advertised. A most unusual lense. It takes a while getting use to the lack of an apature ring but the lense is everybit worth it. If you are in a small room and need to take in the whole room this is the lense for you. The Lense is as sharp as all of the other pentax lenses that I have and the depth of field is tremendous.
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