4 K´s in a row

Started Jun 7, 2012 | Discussions thread
hikenhi
Regular MemberPosts: 498Gear list
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Re: 4 K´s in a row, personally...Don't Shakespeare on us...
In reply to gnaztee, Jun 9, 2012

Let me break it down for you:
1st:
:Let's say Pentax SDM failure rate is 2%, regarless of mount style KAF2 or KAF3

:They sell 5,000 units of each/yr for the DA* 16-50 2.8 and DA* 50-135 2.8, and start selling the units in 2006 with the release of the K10D

:To keep things simple, lets say say all the other SDM lenses were released in 2008 and they sell 1,000 units of each/yr.

This would mean that roughly 1,400 of the 70,000 units of the DA* 16-50 2.8 and DA* 50-135 2.8 failed between 2006-2012.

Of all the other 5 models of SDM lenses that were release after 2008, only 500 of those 25,000 units sold failed between 2008-2012.

It's a no brainer why you hear all the blame going to those two most popular SDM lenses that have been around the longest and sold the most, when you've got a pool of horror stories about SDM failurs from from those some-1,400 bad units vs. only 500 bad units for all the other SDM models that are less popular and sell way less units/yr and haven't been around as long.

2ndly:

"Hit and miss referes to your ability to get a good copy of "Any" lens. My second copy of my DA 12-24 has been flawless for 5 years, and the original was pretty much DOA as was my first copy of the DA* 16-50 which crapped out after about a few hundred shots.

 hikenhi's gear list:hikenhi's gear list
Pentax K-7 Pentax K-5 Tamron SP AF 70-200mm F/2.8 Di LD (IF) MACRO Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM Pentax smc DA* 50-135mm F2.8 ED (IF) SDM +5 more
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