PB146006

Noise Reduction

November 9, 2009 | Leave a Comment

Photo was taken in a low light environment. Maximum aperture was only F/3.5. Focal length was 135 mm. This resulted in noisy image. After applying noise reduction, image was improved
Original noisy image.

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Image after noise reduction.

PA234904_NN
Seperti biasa, setiap pagi aku dan istri mengantar anak kami ke sekolah sekalian olah raga jalan pagi. Nah, tidak seperti biasa nya, pagi ini kami melihat balon udara yang melayang di langit Saijo tepat di atas sekolah anak kami. Langsung deh, dipotret dulu.MD Zoom Rokkor 50-135 mm F/3.5 @ 135mm, F/11, 1/2000 sec

The MD Rokkor 50 mm F/1.4 just has been cleaned and it needs to be tested. Distance between camera and the object is about 45 cm.

F/1.4 ; 1/6 sec ; ISO 100
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F/5.6 ; 2.5 sec ; ISO 100
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F/16 ; 25 sec ; ISO 100

Just got a good deal of this lens from an auction site and it was marked as “JUNK”. The hell with this “JUNK” and mold warning from the seller, I wanted it. As you can see, it’s so dirty both front and rear.

First thing to start is to buy lens cleaning kit. In my case, I bought the cheapest kit I can afford. Hehehe. Then let’s start browsing the Net for some information on how to disassemble this lens. Off we go, now!

Screw driver is pointing at the the point where we should start. Only one screw to unscrew.

As you can see, there are another three screws to unscrew to lift off the lens. Once you’ve done with this, you’ll see this similar disassembling.

Finally, after carefully rubbing the lens with the cleaning kit, I was using lens tissue and cleaning liquid, this lens is becoming more beautiful than before. However, at some parts, a few of fungus traces are visible but ignorable in terms of photography image.