Submenu for Programmable AF Chip

[khorh]

Hi,
Recently I decided to try M42 lenses on my 50D.
I bought lens and programmable adapter.

Here is specification of adapter and instruction how to program it:

EMF (Adjustable Aperture And Focus)
AF Confirm M42 Lens to Canon EOS Adapter(NON-flange Version)(Silver)
Function
Change on a dandelion aperture in interval from F1.1 to F45.
Change on a dandelion focal length in interval from 1mm to 65535mm.

Setting Up the emf chip
1. Attach the adapter to the lens and attach the lens to the camera when camera is powered off. Power on the camera and set the camera to Manual mode. Set the camera in single shoot drive mode. Set the shutter speed to 1/60 second and aperture increment step to 1/3 EV.
Notice: Do not set the camera in continuous shooting mode to avoid misopertations.
2. Turn the aperture setting dial and set the aperture value to F/64 and press shutter button once.
3. Turn the aperture dial and set the aperture value to F/57 and press shutter button once.
4. Turn the aperture dial and set the aperture value to F/64 and press shutter button once. The operation combination of F/64-shutter button+F57-shutter button +F/64-shutter button will activate the setting mode of the ring.
5. Turn the aperture dial, if the maximum aperture value can be set to F/1.0, your ring is now in setting mode. And you can begin to set the focal length, maximum aperture value and focus micro adjustment of your lens.

Enter values in setting mode
When setting up the ring, you will need to enter some values. In setting mode, the ring interprets specified aperture values to numbers. The conversion rule is stated in the beneath chart:

Code Select Expand

F/2.0 F/2.2 F/2.5 F/2.8 F/3.2 F/3.5 F/4.0 F/4.5 F/5.0 F/5.6
0 1 2 3 4 5 6 7 8 9

Three setting modes
Mode 0- enter lens' maximum aperture.
Mode 1- enter lens' focal length.
Mode 2- enter lens' focus micro adjustment.
Turn the aperture dial to specific aperture value and press shutter button to enter a desired setting mode.
For example, if you want to enter the lens' maximum aperture, turn the aperture dial to F/2.0[which means Number 0 to the ring] and press shutter button. You are setting the ring in maximum aperture enter mode.

Enter the maximum aperture
1. Turn the dial and set the aperture to F/2.0 and press shutter button to enter this mode.
2. Turn the dial and set the aperture to the actual maximum aperture of your lens and press shutter button. The maximum aperture will be registered in the ring.
The ring accepts aperture value ranging from F/1.1 to F/45.
Notice:
Do not set the maximum to F/1.0. This value is reserved for engineering purpose and will not be accepted by the ring.
Do not set the maximum aperture smaller than F/5.6. The focus detecting system of your digital camera might fail to function properly when a lens slower than F/5.6 is attached.
Goto Store the parameters to emf chip.

Enter the focal length
1. Turn the dial and set the aperture to F/2.2 and press shutter button to enter this mode.
2. Focal length can be set from 1mm to 65535mm. The ring needs five numbers to store the focal length data. If the focal length of your lens is smaller than five digits, you need to insert zeros in front of actual numbers. Each time you choose a number, press shutter button to enter.
Goto Store the parameters to emf chip
For example, if the focal length of your lens is 50mm, you shall enter 00050, that will be a combination of operations: F/2.0-shutter + F/2.0-shutter + F/2.0-shutter + F/3.5-shutter + F/2.0-shutter.

Enter focus micro adjustment
Turn the dial and set the aperture to F/2.5 and press shutter button to enter this mode.
emf chip accepts focus micro adjustment value, ranging from 0 to 31. The value is defined by two numbers. If the micro adjustment value of your lens is smaller than two numbers, you shall insert a zero in front of the actual number. Choose the desired number and press shutter button to enter the value one by one.
Goto Store the parameters to emf chip
For example, if the micro adjustment value is 25, you shall enter F/2.5 - shutter button + F/3.5 – shutter button
Notice: Please enter the micro adjustment value according to your own tests. The value shall not be entered based on calculation alone.

Store the parameters to emf chip
When you finish entering all the parameters of your lens, you shall store them in the ring for normal shooting. Here is how:
Change the aperture value to F/57, press shutter button once.
Change the aperture value to F/64, press shutter button once.
Change the aperture value to F/57 again, press shutter once.
If all the values you've entered are correct, the above three steps will store all the parameters you've just entered to the chip on emf chip.
If you have miss some steps in the entering process or the value you've entered does not fit the value range requirement stated above, the ring will automatically exit setting up mode and no parameters will be stored in the ring.
All the data stored in emf chip will not lost when camera is powered off.
The default parameter settings of emf chip is 50mm F/1.4, please change the parameters according to your lens' specifications.

As you can see setting up this adapter takes quite a long time and unnecesary increase shutter clicks. If you have only one adapter for 2 or 3 lenses it might be a problem.
It would be great if somebody could create new sub menu in ML for that kind of adapters, where you can adjust settings and save them. I don't know is it possible but sending fake "take photo" to adapter withouth using shutter could be an advantage.
Less important but also usefull could be ability to save all our manual lenses in ML with "send to adapter" option.