medium lens adapter

Matteo Pozzi · October 15th, 2007, 03:35 AM

maybe I've solved the lens aberration!
I've seen that the problem is the spherical aberration of the lens
to solve that we have to use another type of condenser
the aspherical pcx lens
for standard adapter the image is so small that a normal pcx is enough :-)
here is the link from anchor optic
http://www.anchoroptics.com/catalog/...34&s=type&d=a#

note that not all the size have the aspherical type
AX20566 73.5 52 PCX 1 ASPHERIC $11.50
maybe that work

also these link :
http://www.alignoptics.com/aspheric-...er-lenses.html
http://www.edmundoptics.com/onlineca...productID=2454

look at the picture and also this link:
http://www.jenoptik.com/cps/rde/xchg...s.xsl/4029.htm

p.s. I also haven't found big and cheap acromat lens :-(

Svyatoslav Pylypchuk · October 16th, 2007, 03:21 PM

Recently I purchased a pair
PRECISION PCX ASPHERIC LENS 65MM DIA, 53MM FL from Surplus
There indeed are no questions about CA.
But very strong barrel, if to use only one.
And if to use both [)l(] or (]l[), nothing is visible :(

Matteo Pozzi · October 17th, 2007, 05:44 AM

.... :-(
and using the 120fl pcx
color aberretion is the same or less!?
Mamiya 645/80/2.8 => 63mm => wax GG => 12mm => PCX Lens D70/FL120 [)=> +-120mm => HV20

Svyatoslav Pylypchuk · October 17th, 2007, 04:06 PM

I have D75/FL120 and D76/FL130.
Yes, CA is less, but yet noticeable.
Also there is substantial vignette.
I search a compromise between vignette, CA and barrel distortion now.
Maybe like this:
Mamiya 645/80/2.8 => 63mm => wax GG => 7mm => PCX Lens D70/FL67 [)=> +-100mm => HV20

Svyatoslav Pylypchuk · October 18th, 2007, 02:17 PM

Looks not beautifully, but it is a project version

Matteo Pozzi · October 18th, 2007, 04:30 PM

:-) looks good!

I've ordered this lens ...I'll tell you if it works
http://www.surplusshed.com/pages/item/l3788.html

Svyatoslav Pylypchuk · February 27th, 2008, 10:19 AM

Just did amateur video for my friend. Taken off as early as September. It have not any aesthetic value. Only demonstrates possibilities of my old static adapter
Mamiya 80 f2.8 => gg => PCX => hv20
http://www.artmaster.kiev.ua/media/HV20_final.mov

October 15th, 2007, 03:35 AM	#31
Matteo Pozzi Regular Crew Join Date: Jul 2005 Location: Milan, Italy Posts: 169	maybe I've solved the lens aberration! I've seen that the problem is the spherical aberration of the lens to solve that we have to use another type of condenser the aspherical pcx lens for standard adapter the image is so small that a normal pcx is enough :-) here is the link from anchor optic http://www.anchoroptics.com/catalog/...34&s=type&d=a# note that not all the size have the aspherical type AX20566 73.5 52 PCX 1 ASPHERIC $11.50 maybe that work also these link : http://www.alignoptics.com/aspheric-...er-lenses.html http://www.edmundoptics.com/onlineca...productID=2454 look at the picture and also this link: http://www.jenoptik.com/cps/rde/xchg...s.xsl/4029.htm p.s. I also haven't found big and cheap acromat lens :-( Attached Images Last edited by Matteo Pozzi; October 15th, 2007 at 04:10 AM.

October 18th, 2007, 02:17 PM	#35
Svyatoslav Pylypchuk Regular Crew Join Date: Jun 2007 Location: Ukraine Posts: 40	Looks not beautifully, but it is a project version Attached Thumbnails

October 16th, 2007, 03:21 PM	#32
Svyatoslav Pylypchuk Regular Crew Join Date: Jun 2007 Location: Ukraine Posts: 40	Recently I purchased a pair PRECISION PCX ASPHERIC LENS 65MM DIA, 53MM FL from Surplus There indeed are no questions about CA. But very strong barrel, if to use only one. And if to use both [)l(] or (]l[), nothing is visible :(

October 17th, 2007, 05:44 AM	#33
Matteo Pozzi Regular Crew Join Date: Jul 2005 Location: Milan, Italy Posts: 169	.... :-( and using the 120fl pcx color aberretion is the same or less!? Mamiya 645/80/2.8 => 63mm => wax GG => 12mm => PCX Lens D70/FL120 [)=> +-120mm => HV20

October 17th, 2007, 04:06 PM	#34
Svyatoslav Pylypchuk Regular Crew Join Date: Jun 2007 Location: Ukraine Posts: 40	I have D75/FL120 and D76/FL130. Yes, CA is less, but yet noticeable. Also there is substantial vignette. I search a compromise between vignette, CA and barrel distortion now. Maybe like this: Mamiya 645/80/2.8 => 63mm => wax GG => 7mm => PCX Lens D70/FL67 [)=> +-100mm => HV20

October 18th, 2007, 04:30 PM	#36
Matteo Pozzi Regular Crew Join Date: Jul 2005 Location: Milan, Italy Posts: 169	:-) looks good! I've ordered this lens ...I'll tell you if it works http://www.surplusshed.com/pages/item/l3788.html

February 27th, 2008, 10:19 AM	#37
Svyatoslav Pylypchuk Regular Crew Join Date: Jun 2007 Location: Ukraine Posts: 40	Just did amateur video for my friend. Taken off as early as September. It have not any aesthetic value. Only demonstrates possibilities of my old static adapter Mamiya 80 f2.8 => gg => PCX => hv20 http://www.artmaster.kiev.ua/media/HV20_final.mov