How to remove lens coating

版主: steveha

steveha
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How to remove lens coating

文章steveha » 五月 19th, 2009, 8:49 pm

My pentac 125mm was suffered from foggy coating.
Today, I have made up my mind to try to remove it.

From the internet, someone has mentioned that 'Mother's Mag & Aluminum Polish' can be used to remove lens coating.

I cleaned my Pentac using this polish (HKD68) with a 3M soft towel. You have to go over it 2 or 3 times.
The nature of this polish is cream like with no sanding effect.
This will DEFINITELY remove lens coating @onion13@
It will leave the glass very nicely polished. Of course, the cleaning marks are still remained. @onion9@

I am very satisfied with the result. The contrast has resumed to Normal (at least accepatble to me). @onion20@

I would recommend it to you guys in safing your foggy lens. @onion24@
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steveha
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Re: How to remove lens coating

文章steveha » 五月 19th, 2009, 8:55 pm

A test shoot of this uncoated Pentac.
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Donald
中度老花
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註冊時間: 十一月 6th, 2008, 10:53 am

Re: How to remove lens coating

文章Donald » 五月 19th, 2009, 9:47 pm

what about shooting against some light?

steveha
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Re: How to remove lens coating

文章steveha » 五月 19th, 2009, 10:08 pm

Donald 寫:what about shooting against some light?


Now, my pentac became an uncoated lens and I don't think it will provide good result when shooting against light.

Before coating removal, it was totally unacceptable to me even on normal light.
After that, the contrast and sharpness improved a lot.

Let's test it at a later stage. @onion24@

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KT_KT
中度老花
文章: 1949
註冊時間: 十一月 9th, 2008, 8:46 pm

Re: How to remove lens coating

文章KT_KT » 五月 19th, 2009, 10:26 pm

I don't understand why the cleaning marks are still there @onion35@

steveha
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Re: How to remove lens coating

文章steveha » 五月 19th, 2009, 10:37 pm

KT_KT 寫:I don't understand why the cleaning marks are still there @onion35@



Good question @onion20@

I guess the cleaning marks may appear on the glass itself not just on coating level. @onion35@
The same situation applied to uncoated lens.

For those cleaning marks on coating, it may already gone. @onion30@

FYI, some fungus marks may not be removed either. It may damage to the glass. @onion13@

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KT_KT
中度老花
文章: 1949
註冊時間: 十一月 9th, 2008, 8:46 pm

Re: How to remove lens coating

文章KT_KT » 五月 19th, 2009, 10:42 pm

steveha 寫:

Good question @onion20@

I guess the cleaning marks may appear on the glass itself not just on coating level. @onion35@
The same situation applied to uncoated lens.

For those cleaning marks on coating, it may already gone. @onion30@

FYI, some fungus marks may not be removed either. It may damage to the glass. @onion13@

I think you are right but you have used the wrong term "cleaning marks". They should be "light scratches" @onion9@

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checkie
會員甲
文章: 20737
註冊時間: 十一月 6th, 2008, 9:14 am

Re: How to remove lens coating

文章checkie » 五月 19th, 2009, 10:43 pm

勁!你真係冇乜野做。 @onion9@

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chrischc
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Re: How to remove lens coating

文章chrischc » 五月 19th, 2009, 11:08 pm

steveha 寫:My pentac 125mm was suffered from foggy coating.
Today, I have made up my mind to try to remove it.

From the internet, someone has mentioned that 'Mother's Mag & Aluminum Polish' can be used to remove lens coating.

I cleaned my Pentac using this polish (HKD68) with a 3M soft towel. You have to go over it 2 or 3 times.
The nature of this polish is cream like with no sanding effect.
This will DEFINITELY remove lens coating @onion13@
It will leave the glass very nicely polished. Of course, the cleaning marks are still remained. @onion9@

I am very satisfied with the result. The contrast has resumed to Normal (at least accepatble to me). @onion20@

I would recommend it to you guys in safing your foggy lens. @onion24@

呢樽 "Mother's Mag & Aluminum Polish'係邊度買 @onion35@
可唔可以抹鋁鏡身

steveha
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文章: 2092
註冊時間: 十一月 6th, 2008, 3:35 pm

Re: How to remove lens coating

文章steveha » 五月 19th, 2009, 11:26 pm

chrischc 寫:呢樽 "Mother's Mag & Aluminum Polish'係邊度買 @onion35@
可唔可以抹鋁鏡身


Not sure can it be used to 抹鋁鏡身.
Bought in a Car Wheel Shop near Watson Road, North Point.

Do you want to try it on Angenieux Lens @onion35@

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chrischc
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Re: How to remove lens coating

文章chrischc » 五月 19th, 2009, 11:57 pm

steveha 寫:
Not sure can it be used to 抹鋁鏡身.
Bought in a Car Wheel Shop near Watson Road, North Point.

Do you want to try it on Angenieux Lens @onion35@

Try the Dallmeyer 80mm/1.5 lens, It is fog and can't modified to FF
and try to clean the Biotar 75/1.5 lens body.
Next time you go to Watson road. Call me I work in this street. I buy afternoon tea.. @onion30@

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checkie
會員甲
文章: 20737
註冊時間: 十一月 6th, 2008, 9:14 am

Re: How to remove lens coating

文章checkie » 五月 20th, 2009, 7:30 am

chrischc 寫:Try the Dallmeyer 80mm/1.5 lens, It is fog and can't modified to FF
and try to clean the Biotar 75/1.5 lens body.
Next time you go to Watson road. Call me I work in this street. I buy afternoon tea.. @onion30@


幫我買丫,唔該!
我有支大媽要除 coating @onion2@

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chrischc
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文章: 11079
註冊時間: 十一月 6th, 2008, 10:58 am

Re: How to remove lens coating

文章chrischc » 五月 20th, 2009, 9:40 am

好呀 @onion30@

steveha
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註冊時間: 十一月 6th, 2008, 3:35 pm

Re: How to remove lens coating

文章steveha » 五月 20th, 2009, 11:37 am

My uncoated Pentac 125mm became usable now @onion9@
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steveha
技師長
文章: 2092
註冊時間: 十一月 6th, 2008, 3:35 pm

Re: How to remove lens coating

文章steveha » 五月 20th, 2009, 11:38 am

checkie 寫:
幫我買丫,唔該!
我有支大媽要除 coating @onion2@


For you Super-Six 25mm @onion35@


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