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D1N0 · 09-13-2021, 09:15 AM

II can't seem to find any lens diagrams for the Pentax-F zooms (except the 35-80 which is leaning towards the FA Design more anyway). Does anybody know a resource for them?

Ronald Oakes · 09-13-2021, 09:46 AM

If you look up each individual lens you can find diagram sometimes in the lens review section

**boriscleto** · 09-13-2021, 09:50 AM

Originally posted by Ronald Oakes

If you look up each individual lens you can find diagram sometimes in the lens review section

For most of the primes, but only 2 of the zooms.

**Pentax Syntax** · 09-13-2021, 10:21 AM

Some are included here:

The K-Mount Page | Information about Pentax technology

Bojidar Dimitrov's Homepage

What a great resource

D1N0 · 09-13-2021, 10:34 AM

Ok I have been able to find diagrams of the 35-70, 70-210 and 100-300(FA like) on Allphotolenses the 35-80 is over here as well as the 17-28mm Fisheye zoom and SMC Pentax-F 80-200mm F4.7-5.6 (another FA like one) and the 250-600 monster zoom.

Still missing 24-50,28-80,35-105,35-135 (same story for their a-series equivalents and most Pentax-a zooms as well)

angerdan · 09-13-2021, 10:50 AM

Originally posted by D1N0

II can't seem to find any lens diagrams for the Pentax-F zooms (except the 35-80 which is leaning towards the FA Design more anyway). Does anybody know a resource for them?

What do you need the lens diagrams for?
Even in one of the latest F lens brochure (1988) there is only one diagram.

D1N0 · 09-13-2021, 12:00 PM - **2 Likes**

Originally posted by angerdan

What do you need the lens diagrams for?
Even in one of the latest F lens brochure (1988) there is only one diagram.

It is not a question of need, but one of curiosity.

glasbak · 09-14-2021, 12:36 PM

Why not look here : Pentax K-Mount Lenses and Lens Accessories | The K-Mount Page

**TwoUptons** · 09-14-2021, 05:41 PM

Is the F24-50 optically the same as the A24-50?
I seem to remember hearing that somewhere...

-Eric

D1N0 · 09-18-2021, 02:36 PM

Originally posted by glasbak

Why not look here : Pentax K-Mount Lenses and Lens Accessories | The K-Mount Page

It wasn't entirely obvious to me the diagrams are hidden under links, but thanks

09-13-2021, 09:15 AM	#1
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802	No lens diagram information for the Pentax-F zooms II can't seem to find any lens diagrams for the Pentax-F zooms (except the 35-80 which is leaning towards the FA Design more anyway). Does anybody know a resource for them?

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09-13-2021, 09:46 AM	#2
Ronald Oakes Pentaxian Join Date: Jul 2017 Location: Virginia Posts: 1,585	If you look up each individual lens you can find diagram sometimes in the lens review section

09-13-2021, 09:50 AM	#3
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,477	Originally posted by Ronald Oakes If you look up each individual lens you can find diagram sometimes in the lens review section For most of the primes, but only 2 of the zooms.

09-13-2021, 10:21 AM	#4
Pentax Syntax Loyal Site Supporter Join Date: Feb 2010 Location: Maryland Posts: 595	Some are included here: The K-Mount Page \| Information about Pentax technology Bojidar Dimitrov's Homepage What a great resource

09-13-2021, 10:34 AM	#5
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802 Original Poster	Ok I have been able to find diagrams of the 35-70, 70-210 and 100-300(FA like) on Allphotolenses the 35-80 is over here as well as the 17-28mm Fisheye zoom and SMC Pentax-F 80-200mm F4.7-5.6 (another FA like one) and the 250-600 monster zoom. Still missing 24-50,28-80,35-105,35-135 (same story for their a-series equivalents and most Pentax-a zooms as well)

09-13-2021, 10:50 AM	#6
angerdan Pentaxian Join Date: Feb 2015 Photos: Gallery \| Albums Posts: 2,643	Originally posted by D1N0 II can't seem to find any lens diagrams for the Pentax-F zooms (except the 35-80 which is leaning towards the FA Design more anyway). Does anybody know a resource for them? What do you need the lens diagrams for? Even in one of the latest F lens brochure (1988) there is only one diagram.

09-13-2021, 12:00 PM - 2 Likes	#7
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802 Original Poster	Originally posted by angerdan What do you need the lens diagrams for? Even in one of the latest F lens brochure (1988) there is only one diagram. It is not a question of need, but one of curiosity.

09-14-2021, 12:36 PM	#8
glasbak Veteran Member Join Date: Apr 2009 Location: Netherlands Posts: 369	Why not look here : Pentax K-Mount Lenses and Lens Accessories \| The K-Mount Page

09-14-2021, 05:41 PM	#9
TwoUptons Loyal Site Supporter Join Date: Nov 2015 Photos: Albums Posts: 4,227	Is the F24-50 optically the same as the A24-50? I seem to remember hearing that somewhere... -Eric

09-18-2021, 02:36 PM	#10
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802 Original Poster	Originally posted by glasbak Why not look here : Pentax K-Mount Lenses and Lens Accessories \| The K-Mount Page It wasn't entirely obvious to me the diagrams are hidden under links, but thanks

No lens diagram information for the Pentax-F zooms

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