Can I Adapt a Minolta Sr Lens to Sony Alpha
AndroC • Forum Member • Posts: 97
Minolta Doc/MC to A-Mount adapters
Greetings All,
What do people use to adapt Minolta MD or MC lenses to the Sony Alpha A-mount? Whatsoever thoughts on image quality?
I see that ane from Fotodiox has a i.4x lens in it to permit adjusted lenses to focus at infinity. I assume this ways a 50mm lens effectively becomes 70mm with the apdater. Is this and so?
Andrew
jeffcpix • Senior Fellow member • Posts: ane,707
Re: Minolta Physician/MC to A-Mount adapters
2
My experience has been that the adapters with glass reduce image quality dramatically. A drinking glassless adapter I recently bought had to exist shimmed to compensate for the poor fit between MD and adapter (the adapter to A mount wasn't great either but tolerable) and, of form, it does non allow focus to infinity.
I bought an Medico Rokkor 500mm f8 Reflex that had a custom A-mount adapter which focuses to infinity. The adapter is a modified T-mount which has three 'fix screws' that clamp onto the Doc mount; information technology works because the 500 natively focuses by infinity -- but it's ugly and fussy to mountain.
http://world wide web.dpreview.com/forums/post/55642085
The best solution is to switch to East mount -- Doctor to Eastward is well supported. And with the A7ii you go to use IBIS.
Re: Minolta Medico/MC to A-Mount adapters
Minolta made an optically good one which combined the optical infinity correction with beingness a 1.4X extender, but but bachelor 2nd hand occasionally at high prices.
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Chris Malcolm
Sony Alpha DSLR-A550 Sony SLT-A77 Sony 50mm F1.4 Sony 500mm F8 Reflex Sony DT 18-250mm F3.5-6.3 +vii more
Re: Minolta MD/MC to A-Mount adapters
Chris Malcolm wrote:
Minolta made an optically good one which combined the optical infinity correction with being a one.4X extender, but only bachelor 2d hand occasionally at loftier prices.
Was in that location a 1.4x version? I remember the Minolta 1000/A converters, simply equally far as I know they were only made in 2x, with ii models for long or short lenses.
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Dave, HCL
neilt3 • Senior Member • Posts: 2,321
Re: Minolta MD/MC to A-Mount adapters
ane
Heritage Cameras wrote:
Chris Malcolm wrote:
Minolta made an optically proficient ane which combined the optical infinity correction with existence a one.4X extender, just but available 2nd mitt occasionally at high prices.
Was there a ane.4x version? I remember the Minolta M/A converters, but as far as I know they were only made in 2x, with two models for long or brusk lenses.
That's correct , Minolta only made 2 convertors .
The Minolta 2X One thousand/A Converter Due south for lenses shorter than 300mm and the Minolta 2X Thou/A Converter L for lenses longer than 300mm .
Sigma made an interesting converter for the original Minolta 7000AF and 9000AF cameras , the Sigma AF 1.6X multi converter .
Information technology'due south a 1.6X teleconverter with a moveable element and full aperture control , bachelor in Minolta SR mount to A-mount or Nikon F ( AI ) mount to A-mount .
I have the Nikon AI-MA version .
It worked by mounting the lens , setting the slider on the side of it to the lenses maximum aperture and then manually focussing the lens to "virtually" the right spot .
When the shutter release push button is one-half pressed the cameras machine focus took over to get spot on focus . Painfully slow by todays standards , merely not likewise bad compared to the native lenses on the 1985 camera .
Discontinuity control and automobile exposure was set in the camera , the same as a native lens .
.
Unfortunately this adapter merely works with the first series of AF cameras , when I become around to it I intended to re-fleck mine then information technology would work with my Sony cameras .
On motion picture , image quality was proficient , no idea how it will acquit on a digital camera .
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Re: Minolta MD/MC to A-Mountain adapters
+1 for jeffcpix! His recommendation to use the E mountain instead is also spot on.
I have made some experiments with the standard adapter. I used a Super Takumar 50/one.4 M42 lens (the thorium one), which has a universal thread and can exist mounted directly with a glass-less adapter in my a900. I then put the same lens on a M42-to-MD glassless adapter and added the MD-to-A-mount adapter. In that mode I could test the verbal same lens, with AND without adapter.
These are my findings as far equally I can remember (can't find my notes).
- The tele event is much weaker than unremarkably said, it's not fifty-fifty 1.2x. 1.1 or fifty-fifty less.
- The sharpness reduction is terrible. Lenses get useless unless stopped down to at to the lowest degree 5.half-dozen. Even and then they are pretty bad.
- Contrast and... well... everything else gets much worse too. And if you have bespeak light sources in the moving-picture show, prepare for a glare-fest, as the adapters are badly coated or even uncoated and light will bounce betwixt the sensor and back chemical element.
- The overall prototype quality is that of a lens with massive spherical aberration issues, and that is probably what's happening, too.
I really had two adapters. I found no large differences between them. I kept one and sacrificed the other by drilling out the drinking glass element, making a mechanical adapter for Dr. bellows usage. And that's about what they are practiced for.
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Re: Minolta Doctor/MC to A-Mountain adapters
neilt3 wrote:
Heritage Cameras wrote:
Chris Malcolm wrote:
Minolta made an optically adept one which combined the optical infinity correction with being a 1.4X extender, but only bachelor second mitt occasionally at high prices.
Was there a ane.4x version? I call back the Minolta M/A converters, but every bit far as I know they were just made in 2x, with two models for long or short lenses.
That's right , Minolta only made 2 convertors .
The Minolta 2X 1000/A Converter S for lenses shorter than 300mm and the Minolta 2X 1000/A Converter L for lenses longer than 300mm.
You're right! Mine is the 2X <300mm version. I misremembered it equally ane.4X, having read then much here about 2X extenders being optically rubbish! Non this ane.
Sony A350 camera, f8, 1/4 second on tripod, ISO 100.The lens was a cheap Hoya 200m prime, a survivor from my early pre-autofocus SLR days. Quite usable epitome quality. For a while this lens plus the 2X converter was my best long lens. Because of the sea mist over the Firth of Forth this distant image was very low in contrast. Since information technology wasn't exposed to the right the mail processing to expand the dynamic range introduced quite a chip of noise. In the interests of preserving the captured item I left some of the noise in the image.
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Chris Malcolm
Sony Alpha DSLR-A550 Sony SLT-A77 Sony 50mm F1.iv Sony 500mm F8 Reflex Sony DT 18-250mm F3.5-6.3 +7 more
neilt3 • Senior Member • Posts: 2,321
Re: Minolta MD/MC to A-Mountain adapters
Prissy to hear information technology's a proficient one . I bought one off eBay last week and I am awaiting it's inflow.
I have the matched Minolta 1.4x and 2x converters for my 200mm and 300mm Minolta AF G lenses .
Both requite good results .
I've bought this one to try out some of my older tele'due south with . I might get the one for the 300mm + lenses if I'm impressed .
We'll meet .
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Why not M42 or M39?
AndroC wrote:
Greetings All,
What practice people use to conform Minolta Doc or MC lenses to the Sony Alpha A-mountain? Whatever thoughts on image quality?
I come across that ane from Fotodiox has a 1.4x lens in it to permit adapted lenses to focus at infinity. I assume this means a 50mm lens effectively becomes 70mm with the apdater. Is this so?
Andrew
Why MD/MC lenses? I would suggest you expect at both the M42 and M39 screw-mount lenses from some excellent manufacturers such equally:
Jupiter, Pentacon, Helios & Pentax Takumar.
Jupiter and Helios build to Zeiss Biotar and Sonnar specs and IQ tin be top draw (y'all'll likely find image groups on Flickr for samples and owner chat), though the all-time MF lens database/reviews/image samples are on the Pentaxuser website.
If you did determine on M42 lenses rather than Physician/MC, Jupiter is a fantastic make and their lenses normally take 12-fifteen curved aperture blades, merely with respect to which are the best, then get the lens model that has an 'A' suffix, then Jupiter 11A rather than Jupiter xi. and yet at that place are some specialist lenses such every bit a Peleng 8/two.8 or Zenitar MC xvi/ii.8 fisheyes which you tin can experiment with, though you really need a full frame trunk for M42/M39/MC/Medico lenses.
In that location are any number of similar posts like yours on DPR (did you employ the search facility)? Peradventure y'all could update united states of america with what you make up one's mind to do.
Sony Blastoff DSLR-A850 Sigma ten-20mm F3.v EX DC HSM Topaz Adapt Topaz B&W effects Topaz Clean +eighteen more than
(unknown fellow member) • Veteran Member • Posts: 9,509
Re: Minolta MD/MC to A-Mount adapters
neilt3 wrote:
Heritage Cameras wrote:
Chris Malcolm wrote:
Minolta fabricated an optically good ane which combined the optical infinity correction with being a one.4X extender, but only available 2nd hand occasionally at high prices.
Was in that location a 1.4x version? I remember the Minolta M/A converters, but as far every bit I know they were only made in 2x, with two models for long or brusk lenses.
That's correct , Minolta merely made 2 convertors .
The Minolta 2X M/A Converter Southward for lenses shorter than 300mm and the Minolta 2X M/A Converter L for lenses longer than 300mm .
Sigma made an interesting converter for the original Minolta 7000AF and 9000AF cameras , the Sigma AF one.6X multi converter .
It's a 1.6X teleconverter with a moveable chemical element and full aperture control , available in Minolta SR mount to A-mountain or Nikon F ( AI ) mount to A-mount .
I take the Nikon AI-MA version .
It worked by mounting the lens , setting the slider on the side of it to the lenses maximum aperture and then manually focussing the lens to "about" the right spot .
When the shutter release push is one-half pressed the cameras car focus took over to get spot on focus . Painfully slow by todays standards , merely not as well bad compared to the native lenses on the 1985 camera .
Discontinuity control and auto exposure was set in the camera , the same equally a native lens .
.
Unfortunately this adapter only works with the outset series of AF cameras , when I become around to it I intended to re-chip mine so it would work with my Sony cameras .
On film , image quality was practiced , no idea how it will behave on a digital camera .
I have the Sigma -Minolta MC/Doc one.6x AF adapter......was hoping information technology would work on an LA-EA4 on an A7/A7s but no such luck.
Re: Minolta MD/MC to A-Mountain adapters
The Mc/Doctor lenses are the one reason I might buy an e mount camera specially if it has Ibis
Tim
jeffcpix • Senior Member • Posts: 1,707
Re: Minolta MD/MC to A-Mount adapters
neil holmes wrote:
I have the Sigma -Minolta MC/MD 1.6x AF adapter......was hoping it would piece of work on an LA-EA4 on an A7/A7s but no such luck.
What were y'all expecting it to do? I believe that only the A7ii allows IBIS with non-native lenses.
(unknown member) • Veteran Member • Posts: ix,509
Re: Minolta Dr./MC to A-Mount adapters
jeffcpix wrote:
neil holmes wrote:
I accept the Sigma -Minolta MC/Doc 1.6x AF adapter......was hoping information technology would work on an LA-EA4 on an A7/A7s but no such luck.
What were yous expecting it to do? I believe that only the A7ii allows IBIS with non-native lenses.
Not expecting.....hoping.... it would have meant I could auto focus my transmission focus Minolta Medico lens on my A7 or A7s......as the adapter is designed to practise.
Information technology seems it but works with a couple of picture show cameras though.
It has the same electric contacts as my former Sigma 180 5.half-dozen APO and THAT works on my A7/A7s on LA-EA4 so there is no reason it could not work but it probably needs tweaking.
Both the AF adapter and LA-EA4 take "lumps" on them so I demand an AF extension tube to mate them together which would not help.
Re: Minolta MD/MC to A-Mount adapters
neil holmes wrote:
It seems it only works with a couple of film cameras though.
Sigmas start generation AF lenses, and probably this adapter, works merely with x000 series camera. It'due south the old reverse engineering science story...
Although information technology might be possible to "scrap" it with i of the chips from, for case, M42 adapters. Or a different Minolta lens. I would try this but the adapter is so uncommon I have never even seen one.
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neilt3 • Senior Member • Posts: 2,321
Re: Minolta Dr./MC to A-Mount adapters
neil holmes wrote:
jeffcpix wrote:
neil holmes wrote:
I have the Sigma -Minolta MC/MD 1.6x AF adapter......was hoping it would work on an LA-EA4 on an A7/A7s but no such luck.
What were y'all expecting information technology to do? I believe that only the A7ii allows IBIS with non-native lenses.
Non expecting.....hoping.... information technology would have meant I could auto focus my manual focus Minolta Medico lens on my A7 or A7s......as the adapter is designed to do.
It seems it merely works with a couple of motion-picture show cameras though.
It has the same electric contacts as my old Sigma 180 five.6 APO and THAT works on my A7/A7s on LA-EA4 so there is no reason information technology could not work but it probably needs tweaking.
Both the AF adapter and LA-EA4 take "lumps" on them and so I demand an AF extension tube to mate them together which would not aid.
Well if you ever make up one's mind to sell the Sigma one.6X MD/MAF adapter , please electronic mail me . I reckon I could be tempted .
.
In the meanwhile my Minolta 2X Grand/A converter-s has only arrived from French republic , so I hope to have a play around with that later on today .
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OP AndroC • Forum Member • Posts: 97
Re: Minolta Doc/MC to A-Mount adapters
Greetings All,
Thanks for all the useful input. As to using E-mountain instead, well, I just obtained a beautiful A850 to finally be able to utilize all my Minolta A series lenses. What a magnificent camera it is. I too have some nice MC Minolta lenses I was hoping to use on the A850, in particular, the rather special 58mm f1.2 MC Rokkor, a splendid lens of heirloom quality. However, if information technology is one.4x converted in terms of focal length, and this with a cheap bit of glass, at that place's no betoken insulting this lens by doing that to it.
The proffer of using a Eastward-mount automobile every bit a digital back to the Minolta Mc/Physician lenses is clearly a amend idea for that sort of lens. I will look into it. But the A850 isn't going anywhere shortly! Practice the East-mount converters yet require ane.4x focal length modification to reach infinity focus?
Andrew
neilt3 • Senior Member • Posts: 2,321
Re: Minolta Doctor/MC to A-Mountain adapters
With Due east mount cameras you purchase the relevant adapter to mount the lens , and because the lens is the correct altitude from the sensor now corrector lenses are needed .
--
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jeffcpix • Senior Fellow member • Posts: 1,707
Re: Minolta MD/MC to A-Mountain adapters
OP AndroC • Forum Member • Posts: 97
Re: Minolta MD/MC to A-Mount adapters
jeffcpix wrote:
Your 58 f1.2 tin exist modified to fit A-mountain
Well, this is splendid. I never imagined! Thank you and then much for the information. I have the technology capability to do this sort of modification, simply not the imagination to accept thought of it - or dared!
Lucky I did not put the 58mm f1.2 on ebay!
Andrew
Converted Rokkor
jeffcpix wrote:
Your 58 f1.ii tin can be modified to fit A-mount
I converted my Rokkor 58/i.2 to A-mount (technically, I paid someone else to do it).
And congratulations on the a850 -- you'll shortly understand why many of us prefer OVF to EVF.
Indeed. I employ mine on my a99, and the focus peaking + magnification makes f/ane.2 much, much easier! I hope at that place will exist a firmware update that lets me select focal length then I can get IBIS to piece of work (or I figure out how to chip information technology).
Sony a99 2 Sony 24mm F2 SSM Carl Zeiss Distagon T* Sony 135mm F2.8 (T4.5) STF Sony Carl Zeiss Planar T* 50mm F1.4 ZA SSM Tamron xv-30mm F2.8 +25 more than
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