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Forum: Pentax K-1 & K-1 II 05-01-2017, 10:05 AM

Have I brought into a dead Eco System
Posted By angerdan

Replies: 178
Views: 20,160

Pentax even did give an Interview about SDM on pentaxforums.
Primes (DA* 55 / 200 / 300) has been affected just 12% before 2012.
Pentax SDM Failure Survey Results - Articles and Tips | PentaxForums.com

"...all lenses produced in 2012 or later should no longer fail."
Pentax SDM Failure Survey Results - Articles and Tips | PentaxForums.com

The DC patent is also here:
ROTARY ACTUATOR
RiceHigh's Pentax Blog: Working Principle of the New "DC" Motor (Patent Paper Included)

Forum: Pentax K-1 & K-1 II 04-29-2017, 03:09 AM

Have I brought into a dead Eco System
Posted By angerdan

Replies: 178
Views: 20,160

The list is outdated, DA 560mm 5.6 DC AW is missing.
SDM motor of DA* 300mm 4.0 is very reliable.
There is also the D FA 150-450mm available.

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