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文章發表於 : 週三 06 12月 06 08:41:48 
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註冊時間: 週日 27 3月 05 22:24:52
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jason.lau 寫:
I start to regret I sold all my C/Y......... :x


It is always not too late to collect them again!!! :twisted:

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文章發表於 : 週三 06 12月 06 09:13:46 
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註冊時間: 週四 12 8月 04 08:54:31
文章: 315
ryhl,

Appreciate your sharing and the courage of testing out the modification which no one has done before.

From your explaination, basically, I have concluded 4 major steps for the modification on Your K100D:

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 plastic body mount
4. Cut away part of the plastic support for the metal mount (This part I don't understand, please further explain if you don't mind)

For step 1, do we need a metal sanding machine? Those hand held one for model making?

After step 3, the register size is smaller, can you still use your K mount lens for whole range focusing?

Again, thanks for your work.


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文章發表於 : 週三 06 12月 06 09:15:15 
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註冊時間: 週四 12 8月 04 08:54:31
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vincenthoy28 寫:
I have tried this to my ist DL and I would like to advised that there is one small black wire connecting to 限位裝置(for the M42 adaptor ring). Please be careful not to disconnect that or you have to solder it back after disconnect. Else you will lose the AF function... :wink:


You have tried it already? wow...行動派 :)


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文章發表於 : 週三 06 12月 06 10:23:31 
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註冊時間: 週三 12 11月 03 19:31:39
文章: 26313
來自: Hong Kong
jack_hui 寫:
jason.lau 寫:
I start to regret I sold all my C/Y......... :x


It is always not too late to collect them again!!! :twisted:


絕贊支持中!

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http://www.lofan.net


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文章發表於 : 週三 06 12月 06 11:02:21 
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註冊時間: 週六 31 7月 04 23:59:03
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lofan 寫:
jack_hui 寫:
jason.lau 寫:
I start to regret I sold all my C/Y......... :x


It is always not too late to collect them again!!! :twisted:


絕贊支持中!


I can't afford those i want to buy lei :(


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文章發表於 : 週三 06 12月 06 11:12:51 
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註冊時間: 週六 08 1月 05 22:54:51
文章: 2268
來自: Hong Kong
I learnt this lesson by paying - never ever sell your C/Y lens unless you are exchanging for one with better condition or bigger aperture, eg. 2.8->1.4->1.2

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.

thanks ryhl in advance.

_________________
Contax : RTS, RTSII(50Y), RTSIII, Aria D, Aria(70Y), N1, ND, T3D(70Y), G2D
Nikon : FM3A, FM3AB
Leica : M9, X1
Fuji : X100
OM : EP2


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文章發表於 : 週三 06 12月 06 16:04:38 
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註冊時間: 週四 11 12月 03 00:07:44
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嘩~~好期待~~!!

我都想成為 customer. 有人幫我整就好啦~!!
我相信大把人等住整~~!!


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文章發表於 : 週三 06 12月 06 16:45:27 
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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.

thanks ryhl in advance.

Cheap price (ist DL) v SR (K100D)

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文章發表於 : 週三 06 12月 06 17:13:11 
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註冊時間: 週六 08 1月 05 22:54:51
文章: 2268
來自: Hong Kong
vincent, pls forgive my ignorance. SR = Shake Reduction?
i guess both of them are not full frame. :(

_________________
Contax : RTS, RTSII(50Y), RTSIII, Aria D, Aria(70Y), N1, ND, T3D(70Y), G2D
Nikon : FM3A, FM3AB
Leica : M9, X1
Fuji : X100
OM : EP2


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文章發表於 : 週三 06 12月 06 17:36:40 
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註冊時間: 週四 12 8月 04 08:54:31
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Yes, Shake Reduction. 1.5 crop effect for both model.


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文章發表於 : 週三 06 12月 06 17:46:29 
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註冊時間: 週六 02 9月 06 12:01:12
文章: 28
Choyin 寫:
ryhl,

Appreciate your sharing and the courage of testing out the modification which no one has done before.

From your explaination, basically, I have concluded 4 major steps for the modification on Your K100D:

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 plastic body mount
4. Cut away part of the plastic support for the metal mount (This part I don't understand, please further explain if you don't mind)

For step 1, do we need a metal sanding machine? Those hand held one for model making?

After step 3, the register size is smaller, can you still use your K mount lens for whole range focusing?

Again, thanks for your work.


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
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文章發表於 : 週三 06 12月 06 17:56:44 
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註冊時間: 週六 02 9月 06 12:01:12
文章: 28
Sorry to have forgotten the point 4. "Cut away part of the plastic support for the metal mount" - There is 5 螺絲位 in the plastic body once you unscrewed the metal mount and take it out. These 螺絲位 also serves to support the metal mount and their thickness also determines how far the metal mount is away from the CCD. By cutting a little bit (~0.2 mm) of these 螺絲位, and also a thin ring of plastic just beneath the thin metal ring, the distance between the metal mount and the CCD can be slightly shortened - and cope with the register of C/Y lenses :D

Again, this is the case of my K100D only. Since the official data indicates that the register of K mount is same as that of C/Y, may be the above step may not be necessary for your Pentax camera.


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文章發表於 : 週三 06 12月 06 17:56:47 
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註冊時間: 週六 08 1月 05 22:54:51
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ryhl, do u think the mirror has any chance of hitting any rear element of C/Y lens?

_________________
Contax : RTS, RTSII(50Y), RTSIII, Aria D, Aria(70Y), N1, ND, T3D(70Y), G2D
Nikon : FM3A, FM3AB
Leica : M9, X1
Fuji : X100
OM : EP2


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文章發表於 : 週三 06 12月 06 18:02:50 
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註冊時間: 週六 02 9月 06 12:01:12
文章: 28
vincenthoy28 寫:
I have tried this to my ist DL and I would like to advised that there is one small black wire connecting to 限位裝置(for the M42 adaptor ring). Please be careful not to disconnect that or you have to solder it back after disconnect. Else you will lose the AF function... :wink:


Thanks vincenthoy28 for your explanation about the use of the 限位裝置 (I initial thought that it was a anti-static electricity device). Yes there is a wire connecting to that thin metal ring. I have accidentially disconnected it during the modification. But the camera can still AF in the normal way. Maybe K100D have a different design in this respect :P


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文章發表於 : 週三 06 12月 06 18:07:21 
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註冊時間: 週六 02 9月 06 12:01:12
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Choyin 寫:
Yes, Shake Reduction. 1.5 crop effect for both model.


Yes it is really a pity that Pentax do not have a full frame model at present. Since there is rumor that nikon will launch a FF model soon (both nikon and pentax use sony's CCD), I am really looking forward for the Pentax one :P :P


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