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M42 adapter for α-AF with Focus Confirmation

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JamesLaoT View Drop Down
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Post Options Post Options   Quote JamesLaoT Quote  Post ReplyReply Direct Link To This Post Topic: M42 adapter for α-AF with Focus Confirmation
    Posted: 19 October 2007 at 06:02
M42 adapter for α-mount AF DSLC with Focus Confirmation
suitable for α-100,α-7D,α-5D

   There are two type adapters , one is single data inside:
   The other is four sets data inside :
   All len's data could be selected by user.
   I can accept paypal for oversea buyers.
   If any question,please email me , Thanks.

The M42->α-AF electronic adapter, which has the electronic circuit inside, may simulates the data interface of the lens of α-AF format. Its electronic touch point connects to the same point on digital camera under normal condition. When digital camera is performing boot, it reports the simulating data of the lens for the digital camera. Thus, the digital camera will treat the MF lens as the AF lens. Then the Focus Confirmation, as well as more important AS functions can be enabled.
For giving a maximum effect for AS, it should choose the same lens parameter as the MF, for instance, if you want use the Takumar 50/1.4, the best selection is simulating to the Electronic Adaptor of AF50/1.4. When you use the 135/2.8 MF lens, you’d better to select AF135/2.8. This may avoid remedy mistake because of the actual different focal distance brings from AS function.
The same as the above principle, we shouldn’t suggest use focal variation manual lens for avoiding calculation adjustment error brings from the AS function. Since it is unable to provide the correct focal distance data to the camera, it inevitably brings the calculation adjustment error which can cause the vibration due to the system error.
M42->MAF Adaptor features compact construction and limited space. Although this Adaptor adopts comprehensive technical method, and considers the situations of the majority of lens, it still has the possibility of the position interference with the using lens. It usually present with rough install for the lens screwing to the Adaptor, or strenuous. In this instance, we suggest not install forcefully and change to other lens, or you can grind the thread of the lens.
New version can support up to 4 kinds focal setting. you can use only one adapter for 4 lens.
http://eadpt.com

M42 adapter with Focus Confirmation
 



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polyglot View Drop Down
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Post Options Post Options   Quote polyglot Quote  Post ReplyReply Direct Link To This Post Posted: 19 October 2007 at 06:58
What price?
C&C always welcome
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Post Options Post Options   Quote Pete Ganzel Quote  Post ReplyReply Direct Link To This Post Posted: 19 October 2007 at 07:25
Hi James:

I checked out the link to your site.
I see you have some type of contact/chips without the lens adapter itself.
Are these the same as those in your m42 adapter?
Are they available in quantity?

Thanks,

Pete
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JamesLaoT View Drop Down
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Post Options Post Options   Quote JamesLaoT Quote  Post ReplyReply Direct Link To This Post Posted: 19 October 2007 at 07:35
Single len's Data type (45 US$).   
Four Sets len's Data type (65 US$).

    All len's data could be selected by user.

    The shipping fee use EMS can look up from:
    http://www.ems.com.cn/serviceguide/e-zi-fei-biao-zhun.html
   That can be reveived in about a week. and this way can be track.
   Or wo can use Airmail , the shipping fee is (10US$). That maybe reveived about 2 or 4 weeks.
   I can accept paypal for oversea buyers.

Different from most other adapter:
1. can choice len's data by yourself
2. can skip about 5's noise when DSLC power on/off.
3. can give you multi-data in one adapter.

    The focal lengths can be: 18,20,24,28,35,50,60,85,100,135,200,300,400,500,800,1000mm
    The Max apature can be 1.1(for a100) ,1.2(for a7D/a5D),1.4,1.7,1.8,2.0,2.2,2.4,2.8,3.5,4,5.6...
http://eadpt.com

M42 adapter with Focus Confirmation
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JamesLaoT View Drop Down
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Post Options Post Options   Quote JamesLaoT Quote  Post ReplyReply Direct Link To This Post Posted: 19 October 2007 at 07:54
Originally posted by Pete Ganzel Pete Ganzel wrote:

Hi James:

I checked out the link to your site.
I see you have some type of contact/chips without the lens adapter itself.
Are these the same as those in your m42 adapter?
Are they available in quantity?

Thanks,

Pete

Yes, there are chips for DIY adapter. There two type, one for MD->MA adapter. one for M42->MA adapter.
The pictures in the website is for MD->MA.
Here are some picture for DIY a MD->MA adapter with focus confirmation:
http://pp.sohu.com/photoset.jhtml?method=view&id=17456238

The two type contact/chips have same functions with my Electronic M42 adapter. All of this use the same program and the same micro-computer chip.
There are already be sold in quantity months age. If any requst, please PM me or email me.
http://eadpt.com

M42 adapter with Focus Confirmation
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Gabriel View Drop Down
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Post Options Post Options   Quote Gabriel Quote  Post ReplyReply Direct Link To This Post Posted: 25 October 2007 at 15:22
I ordered an M42 adapter with 4 focal lenghts included, and I am pleased by it.
The big positive point is that JamesLaoT allows us to choose our own focal lengths.

I am not yet sure about infinity focus, because I just received the adapter yesterday, and have not yet done proper testing. However, in the worst case it would not be far from infinity, and for sure is way better than some regular m42 adapters I already bought.
 



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conor12 View Drop Down
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Post Options Post Options   Quote conor12 Quote  Post ReplyReply Direct Link To This Post Posted: 28 March 2008 at 01:38
Hey James
Im trying to PM you but dyxum says you cant recieve anymore PMs.
I am interested in buying a focus confirm m42 adapter for my a100 with 4 different lenses.

Helios 40 85mm f1.5
Jupiter 9 85mm f2
carl zeiss jena 35mm 2.4
carl zeiss jena 180mm 2.8

In your above list on max aperture, you dont mention f1.5. Has this changes since and do you support it now? This is my favourite lens and i would love to get it working with focus confirm and steady shot.
Thanks a lot
Conor

Edited by conor12 - 28 March 2008 at 01:40
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polyglot View Drop Down
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Post Options Post Options   Quote polyglot Quote  Post ReplyReply Direct Link To This Post Posted: 28 March 2008 at 02:09
I too would like to buy one but can't get a PM through.

James: can you please PM me?

@conor: you could set it at f/1.4. SSS only cares about focal length; max aperture only gets recorded in exif and defines the range that you can twirl the wheel through in A-mode. The 85/1.5 will work fine if the camera thinks it's f/1.4.


Edited by polyglot - 28 March 2008 at 02:13
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conor12 View Drop Down
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Post Options Post Options   Quote conor12 Quote  Post ReplyReply Direct Link To This Post Posted: 28 March 2008 at 02:48
Thanks Ploygot, you've put me at ease...
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JamesLaoT View Drop Down
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Post Options Post Options   Quote JamesLaoT Quote  Post ReplyReply Direct Link To This Post Posted: 02 April 2008 at 03:49
Hi Conor,
   Sorry for my PM inbox was full days ago. Now it's ok again.
   You can use the data as : 85/1.4,35/2.5,85/2,180/2.8
   
    james

Originally posted by conor12 conor12 wrote:

Hey James
Im trying to PM you but dyxum says you cant recieve anymore PMs.
I am interested in buying a focus confirm m42 adapter for my a100 with 4 different lenses.

Helios 40 85mm f1.5
Jupiter 9 85mm f2
carl zeiss jena 35mm 2.4
carl zeiss jena 180mm 2.8

In your above list on max aperture, you dont mention f1.5. Has this changes since and do you support it now? This is my favourite lens and i would love to get it working with focus confirm and steady shot.
Thanks a lot
Conor
http://eadpt.com

M42 adapter with Focus Confirmation
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Mauricio11 View Drop Down
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Post Options Post Options   Quote Mauricio11 Quote  Post ReplyReply Direct Link To This Post Posted: 02 April 2008 at 04:53
Hi James,
I already have an 4-data adapter from you. It works great with my A100.
My question is:
Will it work with A700? I'm saving to buy this new body.
I think it will work... Am I wrong?
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JamesLaoT View Drop Down
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Post Options Post Options   Quote JamesLaoT Quote  Post ReplyReply Direct Link To This Post Posted: 08 April 2008 at 19:12
Originally posted by Mauricio11 Mauricio11 wrote:

Hi James,
I already have an 4-data adapter from you. It works great with my A100.
My question is:
Will it work with A700? I'm saving to buy this new body.
I think it will work... Am I wrong?

Hi Mauricio,
It works well with A700,just like with A100.
You can just try it first with your 4-data adapter.
:)
james
http://eadpt.com

M42 adapter with Focus Confirmation
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pepesaspa View Drop Down
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Post Options Post Options   Quote pepesaspa Quote  Post ReplyReply Direct Link To This Post Posted: 19 April 2008 at 23:53
     
I know that the confirmation of approach does not usually work with openings smaller than F8.
Can the image stabilizer with an F10 or F12, as the MTO or Rubinar 1000mm F10?
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Post Options Post Options   Quote Blunderstein Quote  Post ReplyReply Direct Link To This Post Posted: 20 April 2008 at 01:30
Originally posted by JamesLaoT JamesLaoT wrote:


Yes, there are chips for DIY adapter. There two type, one for MD->MA adapter. one for M42->MA adapter.

Could your chips be used on a Tamron Adaptall-2 to Minoolta AF adapter?
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