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文章發表於 : 週三 06 12月 06 18:09:45 
討論區新手

註冊時間: 週六 02 9月 06 12:01:12
文章: 28
Raimondi 寫:
ryhl, do u think the mirror has any chance of hitting any rear element of C/Y lens?


For K100D, I have not encountered any mirror hit so far. Not sure if the super-tele would have any problem. Maybe mirror hit may occur for the hopeful future FF models. If that will be the case, I will not be hesitate to cut a portion of the mirror then :twisted:


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文章發表於 : 週三 06 12月 06 21:06:51 
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註冊時間: 週四 12 8月 04 08:54:31
文章: 315
ryhl 寫:
Hi Choyin,

Sorry that I have not make it very clear in my earlier message... Step 3 should be sand away 0.2mm of thickness of the metal body mount. Thats why you would see there are some golden areas in the modified metal mount.

For step one, I only use 手銼 to do the work. Though I do have electrical crafting machine, I was afraid of that the metal dusts caused by the machine would turn my flat into a mess so only do the work manually.

After step 3, there is apparently no problem for my K mount 18-55 kit lens for whole range focusing(sorry that I have only one AF pentax lens so not sure if there will be problem for other pentax lenses). I have just take a photo by the kit lens and you could see its performance after the modification -

40mm, f/4.5, 1/500s
圖檔

Point of focus, 100% crop
圖檔



OK here is the revised procedure, For better understanding, I have also disemmble my istDL for study:

1. Remove the blue marked area of the mount.
2. Remove the thin metal (M42 stopper) on the 2nd layer ring beneath the mount
3. Sand away 0.2mm of thickness of the metal mount
4. Cut away the plastic screw support.

But I have found a minor difficulty which dosen't matter on the modication. There is a welded wire connected to the tin metal ring with the M42 stopper. did you cut it off or there is no such thing in K100D?


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文章發表於 : 週三 06 12月 06 22:30:15 
理事
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註冊時間: 週六 08 11月 03 07:56:21
文章: 5756
新品 37905 yen

限定 20 台!!

http://www.mapcamera.com/sho/search.php ... 3&class=01

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文章發表於 : 週三 06 12月 06 23:13:18 
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註冊時間: 週日 27 3月 05 22:24:52
文章: 1229
wah 寫:


唔洗 3K HKD!!! :twisted:

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文章發表於 : 週三 06 12月 06 23:21:10 
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註冊時間: 週六 08 11月 03 01:36:09
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Raimondi 寫:
Have to do research on pentax dslr now. is K100D better or 1stDL better? now i do not need to start a ZF or ZA series.


Raimondi .. ZF 仍然值得考慮 .. :lol: :lol:


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文章發表於 : 週四 07 12月 06 09:22:48 
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註冊時間: 週六 02 9月 06 12:01:12
文章: 28
Choyin 寫:
OK here is the revised procedure, For better understanding, I have also disemmble my istDL for study:

1. Remove the blue marked area of the mount.
2. Remove the thin metal (M42 stopper) on the 2nd layer ring beneath the mount
3. Sand away 0.2mm of thickness of the metal mount
4. Cut away the plastic screw support.

But I have found a minor difficulty which dosen't matter on the modication. There is a welded wire connected to the tin metal ring with the M42 stopper. did you cut it off or there is no such thing in K100D?


I have attempted to refine the workflow as follows -

1. Remove the blue marked area of the mount.

2. Remove the thin metal (M42 stopper) on the 2nd layer ring beneath the mount.

3. Re-fix the mount to the camera body. Put on the C/Y lenses and shoot at infinity to check if the register is correct. (From my experience, P85/1.4 should be the best to perform the test as it requires highest accuracy in getting a picture of superb quality)

4. If infinity focus is okay - Congratuation! Your Pentax DSLR is now ready for C/Y lenses.
If a blurred picture is got when focusing at infinity - go to step 5.

5. Unscrew the mount again and sand away a considerable thickness of the metal mount. A unit of 0.1mm or so is recommended as a extremely small difference in the register would be able to cause a huge difference.

6. Cut away a thin layer of the plastic screw support on the camera body which is equal to the thickness of the metal mount being sanded away in step 5. Also removed a circle of the plastic (of the same thickness) immediately beneath the thin metal (M42 stopper). If this circle of plastic is not removed, there will not be any difference in the register even the metal mount and the screw support is modified.

7. Re-fix the mount again and test if focus at infinity is okay now. Repeat step 5 and 6 if necessary.


As for the welded wire connected to the tin metal ring with the M42 stopper, I had accidentally cut it off but there is no effect on the camera. But as pointed out by vincenthoy28, ist DL will lost AF function if the wire is disconnected. Maybe the difference is due to design variations between the two models.


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文章發表於 : 週五 08 12月 06 12:29:00 
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註冊時間: 週五 27 1月 06 12:09:10
文章: 492
來自: Singapore
I have successfully converted my DL. However, I believe due to testing without all screws tightened I damaged one of the three lens retaining springs. Managed to repair it.

Was trying to remove the M42 stopper without removing the black wire but it was just too difficult so finally I desoldered the wire but was soldered back after the mod. This part difficult for me as I have lousy soldering skill.

Now the DL works with C/Y with infinity focusing, and still work with my only Pentax lens 28-70 f4 AL with auto focusing.

_________________
Rolleiflex 3003, SL2000F - Rolleiflex SL66E - SONY Alpha 7R1 7R2
Carl Zeiss C/Y T* - QBM HFT - M HFT, ZM T* - ZF T* - Batis T* - Otus T*
http://www.fuwen.net


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文章發表於 : 週五 08 12月 06 14:24:12 
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註冊時間: 週四 12 8月 04 08:54:31
文章: 315
fuwen 寫:
I have successfully converted my DL. However, I believe due to testing without all screws tightened I damaged one of the three lens retaining springs. Managed to repair it.

Was trying to remove the M42 stopper without removing the black wire but it was just too difficult so finally I desoldered the wire but was soldered back after the mod. This part difficult for me as I have lousy soldering skill.

Now the DL works with C/Y with infinity focusing, and still work with my only Pentax lens 28-70 f4 AL with auto focusing.


Wow, Congratulations. Please show us some photos taken by your c/y+Pentax.


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文章發表於 : 週五 08 12月 06 14:58:25 
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註冊時間: 週四 11 12月 03 00:07:44
文章: 105
等睇 result~~ 8) :D


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文章發表於 : 週五 08 12月 06 15:57:10 
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註冊時間: 週六 02 9月 06 12:01:12
文章: 28
fuwen 寫:
I have successfully converted my DL. However, I believe due to testing without all screws tightened I damaged one of the three lens retaining springs. Managed to repair it.

Was trying to remove the M42 stopper without removing the black wire but it was just too difficult so finally I desoldered the wire but was soldered back after the mod. This part difficult for me as I have lousy soldering skill.

Now the DL works with C/Y with infinity focusing, and still work with my only Pentax lens 28-70 f4 AL with auto focusing.


Congratuation! Waiting for your C/Y + DL pictures :D


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文章發表於 : 週五 08 12月 06 22:11:31 
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註冊時間: 週五 27 1月 06 12:09:10
文章: 492
來自: Singapore
Choyin 寫:

Wow, Congratulations. Please show us some photos taken by your c/y+Pentax.


Hi! Sorry to disappoint. I am a die hard film user and only like to take photos in film, at present UC100.

Digital SLR only for not so 'serious' stuff like take pictures of equipment for sale or for posting on my web site, for kids homework, etc.

I do have photos taken by Zeiss Contax and Rolleiflex on my web site. I do also have some photos of my ZM15 taken by my DL in my short article on ZM15. Taken by a very old Pentacon 30/3.5.

The DL so far shutter counts probably less than 300, bought for around a year. Just want to have some fun mod the body for Contax.

_________________
Rolleiflex 3003, SL2000F - Rolleiflex SL66E - SONY Alpha 7R1 7R2
Carl Zeiss C/Y T* - QBM HFT - M HFT, ZM T* - ZF T* - Batis T* - Otus T*
http://www.fuwen.net


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文章發表於 : 週二 10 4月 07 15:09:07 
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註冊時間: 週三 25 8月 04 22:43:48
文章: 4793
k10d又用唔用到c/y?

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文章發表於 : 週二 10 4月 07 16:05:51 
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註冊時間: 週日 09 11月 03 03:42:29
文章: 12295
King 寫:
k10d又用唔用到c/y?

Personally recommandation...don't wast time...go for M42 mount ZS directly...

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