Can Pentax make A Decent Lens? Ricoh have not fixed QC issues...

Started 3 months ago | Discussions thread
Joseph Tainter
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Re: Can Pentax make A Decent Lens? Ricoh have not fixed QC issues...
In reply to Trevor G, 3 months ago

I've had two badly decentered copies of the DA* 16-50. My current one is slightly decentered, but it is only visible at 100% so I use it.

My copy of the DA 55-300 is slightly decentered, but again, it is only visible at 100%.

I've had no problems with A, F, or FA lenses. The current problem seems to have originated when Pentax switched lens production to Hanoi. Pentax clearly reduced quality control at the same time that they made this move.

In the manufacturing process, I don't understand why it is so hard to place lens elements correctly. Can someone clarify this?

Joe

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