I modified a very old manual lens so that i can:
1 - use the flash with it.
2 - have automatic parameters selected by the camera for aperture and shutter priority.
The integration of the dandelion chip for nikon is easy on some lenses and requires some filing on others. The 105mm nikkor requires adaptation. see link.
inspired from http://photo.net/nikon-camera-forum/00ZeqZ
the procedure:
- look at another digital lens to see the positionning of the contacts relative to the mount.
- close the lens aperture to f/22 and put the Dandelion Chip on the lens back barrel and align the 4 th pin of the chip with the white/black dot on the lens. Mark the 4 th pin position on the barrel as well as the edges of the positionned chip. these marks will delimit the area to cut.
- remove the back barrel while on f/22. only 3 tiny philips screws. do not remove the smallest rotation blocking screw that is in the mount rail.
-Place the barrel in a vise with wood jaws to hold it without damaging it.
- cut the barrel inside the marks you have done with a dremel or similar, do not cut too much as you can fine tune with files later.
- carefully adjust the hole with small files, careful as this is aluminium and it goes real fast. make sure the chip protrudes a little bit from the barrel, it is not obvious how much space is available for the contacts to happen with the camera. i have the chip's plastic protruding by 0.2-0.3 mm ish.
- when the 4 th pin of the dandelion aligns perfectly with the marks, you can use slow cure epoxy resin to glue it in place. i used steel reinforced resin as it is easy to adjust and the finish is dark grey.
-----
from: http://filmprocess.ru/nikon_prog_en.htm
Programming of Dandelion includes three simple steps:
1. Activation of the program mode
2. Command input
3. Data input
First in the Menu, set the display/memo. exposition timing to the maximum for all the parameters as the programming of the dandelion chip takes time and you can not press any button other than the trigger during programming or it turns off programming mode.
remove and replace lens on camera again, then turn camera on.
Activate Dandelion program mode by making 3 successive shots with the following shutter speed:
- 1 '' sec
- 6 '' sec
- 1 '' sec
Your screen will show aperture changing by itself in rounds:
2.8 - 4.5 - 5.6 - 10 - 20 - 40 - 90.
This means that Dandelion has entered program mode.
Commands are input with a 1 sec. shot when a certain aperture value appears on the screen.
You cannot choose an aperture value with a controller on your camera. You will have to wait until the needed aperture value appears on the screen. If you miss the value you need, you will have to choose it when it appears again during the next round.
If you don't make a shot after three rounds, Dandelion will exit program mode automatically. To force exit simply turn your camera off.
Changing aperture
Make one shot at aperture 2.8. Aperture will start changing in rounds, but this time from F1 to F90. Choose the value you need. You can only choose aperture values the camera displays. Make a shot at the value you need. Dandelion will memorize it and exit program mode.
Changing focal length
Make a shot at aperture value 4.5. The aperture will continue changing, this time from F1 to F90. Here each value corresponds to focal length according to the table:
Table 1. Aperture values and corresponding focal lengths.
Make a shot when the needed aperture value appears.
Dandelion will memorize its corresponding focal length and exit program mode.
AF/MF switch
Works similar to lens switch. Simply make a shot when aperture value 5.6 appears and the focus mode will switch. Dandelion will then exit program mode.
Confirmation dot justification
You can move autofocus confirmation dot slightly forward or backward by experimentally moving justification constant. One shot at aperture value 10 moves the dot back. Aperture 20 moves the dot forward. The range consists of 17 positions. On default 9 (middle position) is used. Move the confirmation dot forward or backward and try to adjust sharpness. The best justification distance is 3-5 meters.
To exit justification mode turn your camera off.
Lens function
If Dandelion is installed on a lens with an automatic instant-return aperture of AI-S type, you will have to unblock the aperture control function by setting Dandelion to your lens's minimal aperture value which usually equals to 16 or 22.
For correct functioning of an instant-return aperture you will first have to set Dandelion to the fully-open aperture value. You can do this with the help of function 2.8. Then use the following function of minimal aperture value change.
Make one shot at aperture value 40. Aperture will start changing its values round by round, from F1 to F90. Choose the value you need. Normally it will be 16 or 22.
Make one shot when the aperture value you need appears. Dandelion will memorize it and exit program mode.
After that you will be able to work with your aperture in the same way as with an AF lens. Close the aperture on your lens, thus setting it to its minimum. Let it stay that way forever. Then you can choose aperture value, adjust sharpness, make shots, etc, with your main dial.
Note: In pre-AIS series lenses manufactured before 1981 the aperture control mechanism has a non-linear construction. When making pictures with such lens a slight expo correction may be needed.
AI-S lenses with linear aperture of the new type can be distinguished by a special marking: minimal aperture value is marked in red on the main and additional scales. Additional information and photos can be found here.
New AI-S series includes Samyang and Zeiss ZF lenses.
Reset default settings
Make a shot when aperture value 90 appears. Dandelion will reset its default settings (45/2.8, AF, justification 9) and exit program mode.
When finished set the display timing menu back to desired.
----------------------------------------
1 - use the flash with it.
2 - have automatic parameters selected by the camera for aperture and shutter priority.
The integration of the dandelion chip for nikon is easy on some lenses and requires some filing on others. The 105mm nikkor requires adaptation. see link.
inspired from http://photo.net/nikon-camera-forum/00ZeqZ
the procedure:
- look at another digital lens to see the positionning of the contacts relative to the mount.
- close the lens aperture to f/22 and put the Dandelion Chip on the lens back barrel and align the 4 th pin of the chip with the white/black dot on the lens. Mark the 4 th pin position on the barrel as well as the edges of the positionned chip. these marks will delimit the area to cut.
- remove the back barrel while on f/22. only 3 tiny philips screws. do not remove the smallest rotation blocking screw that is in the mount rail.
-Place the barrel in a vise with wood jaws to hold it without damaging it.
- cut the barrel inside the marks you have done with a dremel or similar, do not cut too much as you can fine tune with files later.
- carefully adjust the hole with small files, careful as this is aluminium and it goes real fast. make sure the chip protrudes a little bit from the barrel, it is not obvious how much space is available for the contacts to happen with the camera. i have the chip's plastic protruding by 0.2-0.3 mm ish.
- when the 4 th pin of the dandelion aligns perfectly with the marks, you can use slow cure epoxy resin to glue it in place. i used steel reinforced resin as it is easy to adjust and the finish is dark grey.
-----
from: http://filmprocess.ru/nikon_prog_en.htm
Programming Dandelion for Nikon
Before you startSet your camera to M exposition mode. |
1. Activation of the program mode
2. Command input
3. Data input
First in the Menu, set the display/memo. exposition timing to the maximum for all the parameters as the programming of the dandelion chip takes time and you can not press any button other than the trigger during programming or it turns off programming mode.
remove and replace lens on camera again, then turn camera on.
Activate Dandelion program mode by making 3 successive shots with the following shutter speed:
- 1 '' sec
- 6 '' sec
- 1 '' sec
Your screen will show aperture changing by itself in rounds:
2.8 - 4.5 - 5.6 - 10 - 20 - 40 - 90.
This means that Dandelion has entered program mode.
Commands are input with a 1 sec. shot when a certain aperture value appears on the screen.
You cannot choose an aperture value with a controller on your camera. You will have to wait until the needed aperture value appears on the screen. If you miss the value you need, you will have to choose it when it appears again during the next round.
If you don't make a shot after three rounds, Dandelion will exit program mode automatically. To force exit simply turn your camera off.
Changing aperture
Make one shot at aperture 2.8. Aperture will start changing in rounds, but this time from F1 to F90. Choose the value you need. You can only choose aperture values the camera displays. Make a shot at the value you need. Dandelion will memorize it and exit program mode.
Changing focal length
Make a shot at aperture value 4.5. The aperture will continue changing, this time from F1 to F90. Here each value corresponds to focal length according to the table:
| Aper. | Focal | Aper. | Focal | Aper. | Focal | Aper. | Focal | Aper. | Focal | ||||
| 1.0 | 5 mm | 2.7 | 28 mm | 6.3 | 68 mm | 17 | 160 mm | 40 | 400 mm | ||||
| 1.1 | 7 mm | 2.8 | 30 mm | 6.7 | 70 mm | 18 | 180 mm | 43 | 420 мм | ||||
| 1.2 | 8 mm | 3.0 | 32 mm | 7.1 | 75 mm | 19 | 190 mm | 45 | 450 mm | ||||
| 1.3 | 10 mm | 3.2 | 35 mm | 7.6 | 80 mm | 20 | 200 mm | 51 | 500 mm | ||||
| 1.4 | 12 mm | 3.3 | 38 mm | 8.0 | 85 mm | 21 | 210 mm | 54 | 550 mm | ||||
| 1.5 | 14 mm | 3.5 | 40 mm | 8.5 | 90 mm | 22 | 220 mm | 57 | 600 mm | ||||
| 1.6 | 15 mm | 3.8 | 42 mm | 9.0 | 95 mm | 24 | 240 mm | 60 | 650 mm | ||||
| 1.7 | 17 mm | 4.0 | 45 mm | 9.5 | 100 mm | 25 | 250 mm | 64 | 700 mm | ||||
| 1.8 | 18 mm | 4.2 | 48 mm | 10 | 105 mm | 27 | 260 mm | 68 | 800 mm | ||||
| 1.9 | 19 mm | 4.5 | 50 mm | 11 | 110 mm | 29 | 270 mm | 72 | 900 mm | ||||
| 2.0 | 20 mm | 4.8 | 52 mm | 12 | 120 mm | 30 | 280 mm | 76 | 1000 mm | ||||
| 2.1 | 21 mm | 5.0 | 55 mm | 13 | 130 mm | 32 | 300 mm | 81 | 1200 mm | ||||
| 2.2 | 22 mm | 5.3 | 58 mm | 14 | 135 mm | 34 | 320 mm | 85 | 1500 mm | ||||
| 2.4 | 24 mm | 5.6 | 60 mm | 15 | 140 mm | 36 | 350 mm | 90 | 2000 mm | ||||
| 2.5 | 25 mm | 6.0 | 65 mm | 16 | 150 mm | 38 | 380 mm |
AF/MF switch
Works similar to lens switch. Simply make a shot when aperture value 5.6 appears and the focus mode will switch. Dandelion will then exit program mode.
Confirmation dot justification
You can move autofocus confirmation dot slightly forward or backward by experimentally moving justification constant. One shot at aperture value 10 moves the dot back. Aperture 20 moves the dot forward. The range consists of 17 positions. On default 9 (middle position) is used. Move the confirmation dot forward or backward and try to adjust sharpness. The best justification distance is 3-5 meters.
To exit justification mode turn your camera off.
Lens function
If Dandelion is installed on a lens with an automatic instant-return aperture of AI-S type, you will have to unblock the aperture control function by setting Dandelion to your lens's minimal aperture value which usually equals to 16 or 22.
For correct functioning of an instant-return aperture you will first have to set Dandelion to the fully-open aperture value. You can do this with the help of function 2.8. Then use the following function of minimal aperture value change.
Make one shot at aperture value 40. Aperture will start changing its values round by round, from F1 to F90. Choose the value you need. Normally it will be 16 or 22.
Make one shot when the aperture value you need appears. Dandelion will memorize it and exit program mode.
After that you will be able to work with your aperture in the same way as with an AF lens. Close the aperture on your lens, thus setting it to its minimum. Let it stay that way forever. Then you can choose aperture value, adjust sharpness, make shots, etc, with your main dial.
Note: In pre-AIS series lenses manufactured before 1981 the aperture control mechanism has a non-linear construction. When making pictures with such lens a slight expo correction may be needed.
AI-S lenses with linear aperture of the new type can be distinguished by a special marking: minimal aperture value is marked in red on the main and additional scales. Additional information and photos can be found here.
New AI-S series includes Samyang and Zeiss ZF lenses.
Reset default settings
Make a shot when aperture value 90 appears. Dandelion will reset its default settings (45/2.8, AF, justification 9) and exit program mode.
When finished set the display timing menu back to desired.
----------------------------------------
Which lens?
(from : http://photo.net/nikon-camera-forum/00ZyQC?start=10)
Stefan Gruenendahl , Mar 06, 2012; 05:32 p.m.
reg eggen , Apr 27, 2013; 02:14 p.m.
reg eggen , Apr 27, 2013; 02:37 p.m.
