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Mir
Joined: 07 Feb 2011
Posts: 980
Location: Montreal, Canada
Expire: 2017-09-30
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 Posted: Wed Nov 07, 2012 5:32 pm Post subject: Exakta/Topcon adapter question |
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Mir wrote:
Hi all,
Knowing that the registered distance of the Exakta/Topcon system is 44mm,
and knowing that the registered distance of the Sony/Minolta (a) system is 44.6mm,
Can one affirm that there's glass in this adapter 
Thanks for your time
_________________
"Obsta principiis, finem respice"
"There is a fine line between hobby and mental illness"
MISC: Tamron SP 35-80 (01A), Auto Chinon Tomioka 1.4/55, Tokina AT-X 2.5/90, Tamron SP 5,6/300 (54B)
ZEISS: WG Distagon 2.8/25, WG Distagon 2.8/35 HFT, WG Planar HFT 1.4/50, Ultron 1.8/50, WG Sonnar 2.8/85, WG Sonnar HFT 2.8/135
VOIGTLÄNDER : Ultron Aspherical 1.8/21, Ultron 2/28, Nokton Aspherical 1.2/35, Nokton Classic 1.4/40, Nokton Aspherical 1.5/50, Color-Heliar 2.5/75
MINOLTA: MD 3.5/35-70 Macro, MD 1.2/50, MC Rokkor-X 1.2/58, MD Macro 3.5/50
LEITZ: SUMMICRON-R 2/35 (II), SUMMICRON-R 2/50 (II), TELE ELMARIT-M 2,8/90 (Thin)
CANON RF: 2.8/28, 2/35, 1.2/50, 1.4/50, Serenar 1.8/50, 2/85, 2/100, 3.5/100
LTM : YASHICA YASHINON 1.8/5cm, FUJINON L 2/5cm, CHIYODA KOGAKU SUPER ROKKOR 1.8/5cm, CHIYOKO SUPER ROKKOR C 2/5cm, TOKYO KOGAKU Topcor-S 2/5cm, Nippon Kogaku NIKKOR-H.C 2/5cm, KMZ Jupiter-8 2/5cm
DKL : VOIGTLÄNDER SKOPAREX 3,4/35, SEPTON 2/50, DYNAREX 3,4/90, SUPER-DYNAREX 4/135, Scheiner-Kreuznach Retina-Xenon 1,9/50
And a small Minolta AF set: 2.8/20, 1.4/35, 1.4/50, 2/100, 4.5/100-200
@we3fotography
@7plus_pictures
@_whats.that.car_ |
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Aanything
Joined: 27 Aug 2011
Posts: 2187
Location: Piacenza, Italy
Expire: 2014-05-30
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| Posted: Wed Nov 07, 2012 5:38 pm Post subject: |
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Aanything wrote:
My chart says that exakta-topcon bayonet register distance is 44.7 and Minolta AF 44.5- that changes little about your question since it would be difficult to fit two different bayonets having only 0.2 mm margin.
So, for what I understood, I'd say that there is glass, or no glass but no infinite focus.
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Wed Nov 07, 2012 5:47 pm Post subject: |
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Attila wrote:
Due no infinity without glass adapter, producers usually not make it, I suggest to buy a second hand mirror less camera , prices start from 100 USD on Ebay and use other lenses on mirror less camera rather than on your Sony.
_________________
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Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Mir
Joined: 07 Feb 2011
Posts: 980
Location: Montreal, Canada
Expire: 2017-09-30
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| Posted: Wed Nov 07, 2012 5:50 pm Post subject: |
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Mir wrote:
The ad says that it does infinity focus...
So i guess there's glass....
Here's the chart i use for registered distances :
click
Thanks for your time Aanything
_________________
"Obsta principiis, finem respice"
"There is a fine line between hobby and mental illness"
MISC: Tamron SP 35-80 (01A), Auto Chinon Tomioka 1.4/55, Tokina AT-X 2.5/90, Tamron SP 5,6/300 (54B)
ZEISS: WG Distagon 2.8/25, WG Distagon 2.8/35 HFT, WG Planar HFT 1.4/50, Ultron 1.8/50, WG Sonnar 2.8/85, WG Sonnar HFT 2.8/135
VOIGTLÄNDER : Ultron Aspherical 1.8/21, Ultron 2/28, Nokton Aspherical 1.2/35, Nokton Classic 1.4/40, Nokton Aspherical 1.5/50, Color-Heliar 2.5/75
MINOLTA: MD 3.5/35-70 Macro, MD 1.2/50, MC Rokkor-X 1.2/58, MD Macro 3.5/50
LEITZ: SUMMICRON-R 2/35 (II), SUMMICRON-R 2/50 (II), TELE ELMARIT-M 2,8/90 (Thin)
CANON RF: 2.8/28, 2/35, 1.2/50, 1.4/50, Serenar 1.8/50, 2/85, 2/100, 3.5/100
LTM : YASHICA YASHINON 1.8/5cm, FUJINON L 2/5cm, CHIYODA KOGAKU SUPER ROKKOR 1.8/5cm, CHIYOKO SUPER ROKKOR C 2/5cm, TOKYO KOGAKU Topcor-S 2/5cm, Nippon Kogaku NIKKOR-H.C 2/5cm, KMZ Jupiter-8 2/5cm
DKL : VOIGTLÄNDER SKOPAREX 3,4/35, SEPTON 2/50, DYNAREX 3,4/90, SUPER-DYNAREX 4/135, Scheiner-Kreuznach Retina-Xenon 1,9/50
And a small Minolta AF set: 2.8/20, 1.4/35, 1.4/50, 2/100, 4.5/100-200
@we3fotography
@7plus_pictures
@_whats.that.car_ |
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Wed Nov 07, 2012 6:15 pm Post subject: |
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Attila wrote:
Glass is usually ruin image IQ especially on longer distance shoot where resolution is important, I did try once Nikon adapter with Nikon and did give up. Adapter was so crap still in my drawer, I did read here on forum some user had better experience.
_________________
-------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Aanything
Joined: 27 Aug 2011
Posts: 2187
Location: Piacenza, Italy
Expire: 2014-05-30
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| Posted: Wed Nov 07, 2012 6:20 pm Post subject: |
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Aanything wrote:
there are some differences between your and my chart, actually.
I verified mine with wikipedia, and everything looks the same, but as far as I know the author of the chart I have could have simply copied it from wikipedia.
Anyway, I'd second Attila suggestion: even the best glassed adapter will make your lens perform poorly under some aspect (mostly, resolution on far objects, and wide open performance).
_________________
C&C and editing of my pics are always welcome
Samples from my lenses
My gear
My Flickr |
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Mir
Joined: 07 Feb 2011
Posts: 980
Location: Montreal, Canada
Expire: 2017-09-30
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| Posted: Wed Nov 07, 2012 6:32 pm Post subject: |
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Mir wrote:
My only experience was Minolta MD/MC to minolta/Sony (a)... Not very conclusive
Although i had good old Minolta lenses, i sold them all, and got rid of the glass adapter...
I have one TOKYO KOGAKU RE, Auto-Topcor 2.8/10cm
and i'm waiting on a RE Topcor 2.8/28
And this is what i'll do..
It's non-destructive
_________________
"Obsta principiis, finem respice"
"There is a fine line between hobby and mental illness"
MISC: Tamron SP 35-80 (01A), Auto Chinon Tomioka 1.4/55, Tokina AT-X 2.5/90, Tamron SP 5,6/300 (54B)
ZEISS: WG Distagon 2.8/25, WG Distagon 2.8/35 HFT, WG Planar HFT 1.4/50, Ultron 1.8/50, WG Sonnar 2.8/85, WG Sonnar HFT 2.8/135
VOIGTLÄNDER : Ultron Aspherical 1.8/21, Ultron 2/28, Nokton Aspherical 1.2/35, Nokton Classic 1.4/40, Nokton Aspherical 1.5/50, Color-Heliar 2.5/75
MINOLTA: MD 3.5/35-70 Macro, MD 1.2/50, MC Rokkor-X 1.2/58, MD Macro 3.5/50
LEITZ: SUMMICRON-R 2/35 (II), SUMMICRON-R 2/50 (II), TELE ELMARIT-M 2,8/90 (Thin)
CANON RF: 2.8/28, 2/35, 1.2/50, 1.4/50, Serenar 1.8/50, 2/85, 2/100, 3.5/100
LTM : YASHICA YASHINON 1.8/5cm, FUJINON L 2/5cm, CHIYODA KOGAKU SUPER ROKKOR 1.8/5cm, CHIYOKO SUPER ROKKOR C 2/5cm, TOKYO KOGAKU Topcor-S 2/5cm, Nippon Kogaku NIKKOR-H.C 2/5cm, KMZ Jupiter-8 2/5cm
DKL : VOIGTLÄNDER SKOPAREX 3,4/35, SEPTON 2/50, DYNAREX 3,4/90, SUPER-DYNAREX 4/135, Scheiner-Kreuznach Retina-Xenon 1,9/50
And a small Minolta AF set: 2.8/20, 1.4/35, 1.4/50, 2/100, 4.5/100-200
@we3fotography
@7plus_pictures
@_whats.that.car_ |
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