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Zoom for the Pentax PF 80ED

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Old Saturday 21st September 2019, 11:38   #1
wachipilotes
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Zoom for the Pentax PF 80ED

Which is the best zoom for the Pentax PF-80ED?
Wachi.
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Old Saturday 21st September 2019, 17:09   #2
dipped
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Originally Posted by wachipilotes View Post
Which is the best zoom for the Pentax PF-80ED?
Wachi.
I would imagine the Baader Hyperion zoom Mk IV providing it focusses to infinity which it should as it is designed to be compatible with more spotting scopes.
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Old Saturday 21st September 2019, 17:27   #3
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I had a conversation about this with another bf member who has tried different zooms on the Pentax, and scoured the different threads here and although the Baader seems top, the Pentax' own zoom seems to deliver quite a performance as well
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Old Sunday 22nd September 2019, 12:22   #4
giosblue
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Here is a picture of my modified Baader Zoom. I focuses to well over a mile away at the highest magnification.
Personally this has been more this adequate for my needs. Do you really need infinity for birding?

I don't use the zoom much, it's so quick easy just to pop another fixed eyepiece in I use them most of the time.
My main gripe about the Baader is the dust protection and weather proofing. It doesn't seem to have any.
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Old Sunday 22nd September 2019, 12:53   #5
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This just about sums it up for me. I found that the Pentax had too much CA, it felt like I was looking through an old lens.
What us Pentax users really need, are the Baader optics inside the Pentax body. That would be really good.

https://stargazerslounge.com/topic/2...r-8-24mm-zoom/

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Old Yesterday, 21:53   #6
DRodrigues
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Originally Posted by giosblue View Post
Here is a picture of my modified Baader Zoom. I focuses to well over a mile away at the highest magnification.
...
Well done.
Which version is your zoom?
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Old Yesterday, 23:29   #7
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Pentax infamous barrel notch

The problem with pentax scopes is that the eyepiece socket ,has a notch in the bottom that prevents many eyepieces to sit all the way in,preventing them to reach infinity focus..Yes ,I need infinity focus to bird,of course I do. Specially with a scope!!!..I had to cut a niche in my old Swarovski Astronomy Zoom barrel,many years ago,to reach infinity in my Pentax PF65ED.It was a fixed 1 1/4 barrel and the field stop was way above the end of the barrel,so no problem.With the baader I don't know,but I think would be the same.I don't think the field stop would create any problem,as the Kowa tsn3 narrow neck did ,to prevent insertion.If the astro barrel prevents full insertion ,the problem would be easily and safely solved cutting a small niche in the bottom..
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