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Next PLM lenses

Started Feb 11, 2017 | Questions thread
asahi man Senior Member • Posts: 1,060
Re: Next PLM lenses
8

tosiva wrote:

Smitty1 wrote:

From what I've gathered through other forum posts, PLM isn't designed to drive heavy lens arrays.. it is more adept at the smaller type lenses such as the 55-300mm.

I think, for FF we might see some primes though with this technology.

For DA* I'd like to see the 16-50mm and the 50-135mm both get PLM (or at least a decent DC motor).

I am interested to see any information (official) which says PLM is for light lenses only. I have read only 'maybe' posts. Thanks

Official it's only made by Olympus.

They told that the 2.8 35-100 is using 2 ! AF motors,because the lens group is to heavy for the current motor.

And the Olympus motor is the same type.

I had the focus group of the 150-450 in my hand.....

Compare to the Olympus group with 2 motors,I think Pentax needs 4 motors or a complete new type of plm.

The next is,the mechanic around the focus group is completely different in every plm type lens against the Pentax DC or Canon or Nikon ultrasonic lenses.

The focus groups are in a absolutely durable and massive leading construction.

The plm type groups are in a loose leading.

It's not a secret that all these new motors are not made for heavy weights.

The new way is to use more than one motor.

Best regards

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