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plan or neofluar
Posted: Tue Sep 01, 2020 12:49 pm
by EYE C U
is there a list / ranking of zeiss objectives somewhere?
which one is (better)?
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Re: plan or neofluar
Posted: Tue Sep 01, 2020 1:08 pm
by 75RR
Achromat
Planachromat
NEOFLUAR
Plan-NEOFLUAR
Apochromat
Planapochromat
If it just says Plan then it is an Planachromat
Re: plan or neofluar
Posted: Tue Sep 01, 2020 1:31 pm
by EYE C U
thanks...pretty much what i thought...the neo's came on a scope i bought recently...think i'll keep those on my main scope now. move the other two..10 and 40x down to my secondary scope...they seam very close image wise but hey..the optics are bigger so more light passage is more /better?
Re: plan or neofluar
Posted: Tue Sep 01, 2020 1:38 pm
by 75RR
EYE C U wrote: ↑Tue Sep 01, 2020 1:31 pm
...they seam very close image wise but hey..the optics are bigger so more light passage is more /better?
What you want to look at (apart from the colour correction) is the NA (Numerical Aperture)
In the Planarchromat is 0,22. The NEOFLUAR is 0,30
Higher is better.
Re: plan or neofluar
Posted: Tue Sep 01, 2020 2:28 pm
by BramHuntingNematodes
Well resolution-wise. Seems like you would be almost halving your depth of field though, if that's important.
Re: plan or neofluar
Posted: Tue Sep 01, 2020 2:33 pm
by BramHuntingNematodes
Also it is without the plan corrections, right? So the plan objective would be superior if your purpose was to take a black and white photograph with a large depth of field.
Re: plan or neofluar
Posted: Tue Sep 01, 2020 4:21 pm
by Hobbyst46
BramHuntingNematodes wrote: ↑Tue Sep 01, 2020 2:33 pm
Also it is without the plan corrections, right? So the plan objective would be superior if your purpose was to take a black and white photograph with a large depth of field.
Neofluars are supposed to be quite plan, at least that is what Zeiss literature hints, although they do not provide a quantitative figure of merit.
Re: plan or neofluar
Posted: Tue Sep 01, 2020 4:30 pm
by BramHuntingNematodes
they can't be too plan how else you gonna market the plan neofluars
Re: plan or neofluar
Posted: Tue Sep 01, 2020 4:38 pm
by Hobbyst46
BramHuntingNematodes wrote: ↑Tue Sep 01, 2020 4:30 pm
they can't be too plan how else you gonna market the plan neofluars
Neofluars preceded plan-Neofluars. Plan-Neofluars (for those old 160mm TL microscopes) are not available for all magnifications.
Re: plan or neofluar
Posted: Tue Sep 01, 2020 4:45 pm
by BramHuntingNematodes
they can't be too plan how else you gonna market the plan neofluars and infinity focused scopes
Re: plan or neofluar
Posted: Tue Sep 01, 2020 6:43 pm
by EYE C U
they are pretty close when it comes to focusing the middle vs edges...for pics i can stack em
Re: plan or neofluar
Posted: Tue Sep 01, 2020 6:45 pm
by BramHuntingNematodes
If you are going to resort to stacking, then the depth of field argument weakens too
Re: plan or neofluar
Posted: Tue Sep 01, 2020 7:54 pm
by FungusMan
I am attaching a related page from a dated Zeiss Manual which should be helpful a bit more over the good replies you got
Re: plan or neofluar
Posted: Tue Sep 01, 2020 9:01 pm
by EYE C U
COOL THANKS..
Re: plan or neofluar
Posted: Fri Sep 04, 2020 12:21 am
by EYE C U
Re: plan or neofluar
Posted: Sat Sep 19, 2020 1:31 am
by EYE C U
so is one on left just a repackaged version of itself?
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