The M42-MAF electronic adapter, which has the electronic circuit inside, may simulates the data interface of the lens of the Minolta-AF format. Its electronic touch point connect to the same point on digital camera body.. When digital camera body power on, it reports the simulating data of the lens to the digital camera body. Thus, the digital camera body will treat the MF lens as the AF lens. Then the Focus Confirmation, as well as more important Anti-Shake ("SSS" in Sony/Alpha) functions can be started normally. An operation manual as below.

l Preset Len's data (Only valid for Multiple Data Adapters)

1. Close Camera Body's Power, Mount the adapter and MF Len
2. Open Camera Body's Power You can preset Len's data within 10 seconds. By half-press shuttle button and release it , you can select to next sets Len's data. The default order is 50/1.1 ->85/1.4->135/2.8->200/3.5 .
3. If you want reset Len's data, should turn off Camera Body's Power, re-mounting adapter and report from step 2
Tips: should set aperture to minimum value i.e. 1.1, can observed the aperture value change when preset Len's data.


l Operation

1. Mount the adapter to camera body, set AF/MF switch to MF. Turn on camera's power. Set to mode A (Aperture priority mode)
2. For Multiple Data Adapters ,You can preset Len's data within 10 seconds. By half-press shuttle button and release it, you can change to next sets Len's data.
3. There are two ways to set aperture, the first way is very simple. Just set body's aperture in minimum value. In this way, they will not record correct aperture in Exif. The steps are:

a) Set body's aperture to minimum value, meaning use Max Aperture. (only set once before take picture).
b) Full-open MF Len's aperture.
c) Half press shuttle button and adjust focal, the focus confirmation LED will light when got focus.
d) Set MF Len's aperture to your desires.
e) Take picture enjoy it.

4. The other way is more complex. but you can set aperture value same as MF Len's aperture, and you can record right aperture value in Exif . the process steps are:

a) Full-open MF Len's aperture.
b) Set the aperture value to your desires.
c) Half press shuttle button and adjust focal, the focus confirmation LED will light when got focus.
d) Press AEL lock measured value.
e) Set MF Len's aperture same as you set in step b).
f) Take picture and enjoy it.

l Known Problems

1. For get 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(SSS in Sony/Alpha) function.

2. 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.

3. 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 Adapter, or strenuous. In this instance, we suggest not install forcefully and change to other lens, or you can grind the thread of the lens.

 lHow to Order
    Just from below,input the lens' data into textbox, and add your selection to Cart. Then we can make deal via paypal.
There are some difference between the chip for AF lens rechip and the chip for MF Lens. So if you want repair or rechip an AF lens with the chip here,please note in the textbox with 'AF'. Please set the data with Max aperture at the first. Don't set data with same aperture together.
  For example:
    Wrong order is 35/2.8,50/1.4,85/1.8,135/2.8
    Right order should be 50/1.4,35/2.8,85/1.8,135/2.8
All len's data could be selected by user before shipping.
    The focal lengths can be: 8,12,16,18,20,24,28,35,50,55,60,80,85,90,100,135,180,200,300,400,500,800,1000mm
    The Max apature can be 1.1,1.3,1.4,1.7,1.8,2.0,2.2,2.5,2.8,3.2,3.5,4,5.6...

    The shipping fee use EMS can be check out from http://www.ems.com.cn/serviceguide/e-zi-fei-biao-zhun.html
That can be received in about a week. and this way can be track.
   Or wo can use Airmail , the shipping fee is about 80RMB (~11US$). They are maybe reveived about 2 or 4 weeks.
email: dpg968@sohu.com or reshg@sina.com (jameslaot)
paypal: reshg@sina.com
MSN: tianlx@hotmail.com

Description	Price
	M42-a/MAF Focus Confirm Adapter --M42-L1     - Single Len's Data Version (default len's data:50/F1.4)     CODE: M42-L1   340RMB approx. $49 USD        Lens' Data
	M42-a/MAF Focus Confirm Adapter--M42-L4     - Four Len's Data Version     CODE: M42-L4  (default len's data:50/F1.1,85/F1.4,135/F2.2,200/F2.8)    488RMB approx. $70 USD    Lens' Data
	MD-a/MAF Focus Confirm Adapter--MD-L1   - Single Len's Data Version     CODE: MD-L1 (default len's data:50/F1.4)    440RMB approx. $63 USD    ----Out of Stock    Lens' Data
	MD-a/MAF Focus Confirm Adapter--MD-L4   - Four Len's Data Version     CODE: MD-L4   (default len's data:50/F1.1,85/F1.4,135/F2.2,200/F2.8)    580RMB approx. $83 USD ----Out of Stock        Lens' Data
	M42-a/MAF Focus Confirm Chip--M42C-L1   - Single Len's Data Version     CODE: M42C-L1 (default len's data:50/F1.4)    280RMB approx. $40 USD        Lens' Data Outline of figure
	M42-a/MAF Focus Confirm  Chip--M42C-L4   - Four Len's Data Version     CODE: M42C-L4  (default len's data:50/F1.1,85/F1.4,135/F2.2,200/F2.8)    430RMB approx. $62 USD        Lens' Data Lens' Outline of figure
	MD-a/MAF Focus Confirm  Chip--MDC-L1   - Single Len's Data Version     CODE: MDC-L1 (default len's data:50/F1.4)    280RMB approx. $40 USD        Lens' Data Outline of figure
	MD-a/MAF Focus Confirm  Chip--MDC-L4   - Four Len's Data Version     CODE: MDC -L4 (default len's data:50/F1.1,85/F1.4,135/F2.2,200/F2.8)    430RMB approx. $62 USD        Lens' Data Outline of figure
	AF Rechip Part--AFC-L1   - For Sony/Minolta AF lens Rechip     CODE: AFC-L1 (default len's data:AF 400/F5.6)    280RMB approx. $40 USD        Lens' Data Outline of figure
	180°Split Image Focusing Screen for Dynax7D Sony a100--Sony a700   - For Sony/Minolta AF Replace the Focusing Screen     CODE:FS-H   160RMB approx. $24 USD

Useful Links:
          M42->MAF Adapter With Focus Confirmation --- @dyxum.com
          Using Leica-R lenses on Sony cameras --- leitax
          Minolta 58/1.2 AF Conversion with ROM Chip - Build ---shaozhang
          58 f/1.2 Build Log ---shaozhang
          Another Rokkor 58mm f/1.2 to Minolta AF conversion --- Arkku
          My Rokkor 58mm/1.2 conversion --- bracket
          Reincarnation of 58mm/1.2 ¨Csmall tip --- krca
          Another chipped and mount converted 58 f1.2 :D --- ABramley
          ????!?a????F1.2????
          DIY RECHIPPING OF THE SIGMA 400mm f/5.6 LENS FOR THE SONY DSLR --- Andy Tipler
          Sigma classic 400mm/F5.6 tele quick rechip --- David Kilpatrick

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