[sannaso]

急問!!thanks!!支鏡收細光圈至8打後,在相內看到有一暗黑一點,是鏡內有塵嗎?,因為打升起過反光板,見粒cmos令立立,應該唔關部機事,想問如果拎去CS除塵要幾錢?一個月鏡咋.....the lens is 24-70 G,thanks!!!!!

[salonsip2005]

咁你睇過支鏡推開個光圈環睇過未呀~ 我估有機會係油漬,你放鏡d 位唔好咁高溫呀, 你睇左有冇事先, 同埋我想問下你得一點呀點呀

[sannaso]

G鏡無光圈環....

[sannaso]

右邊偏上果一點黑點

[sannaso]

[sannaso]

[sannaso]

[pierokwong]

Yes, it is dust spot

[pierokwong]

It always comes down to how you handle and use your equipment.

As a working pro, I need my sensor clean every couple of months. And NPS has free sensor cleaning for member.

You can do the following ot avoid dust gether:
- Only change lens when necessery
- When changing lens, camera need to face toward the ground
- Change it as FAST as possible and avoid "open body" for a long time. (More than 10 to 20 sec is a long time already)
- Pay extra caution when shooting around dusty area. Or on the beach.

What camera model you are using? Did you try the sensor cleaning function? If it doesn't work, you may need to bring it for a sensor cleaning.

Not too worry about it, it is normal to see dust spot, especially on FX body.

Cheers,
Piero

[hanny]

this is sure 100% dust on cmos
if dust on lens
at lease the aperture set to f16 or higher
if f8 is cmos

[sannaso]

i use D3S,but i see the cmos really is very very clear and clean....how come?

[sannaso]

main point,i use other lens 35/2,就無問題,係支24-70既問題喇,如保養期內抹鏡除塵要多少錢呢?

[pierokwong]

Sannaso Bro,

I am using D3s as well.

May I ask how can you tell it is "Very very clean"? Can you share how did you come up with that conclusion?

If you have the equipment to check the sensor like those special designed light and magnifier, you can just a step away from removing the dust. As you can see the dust is locating on that spot and didn't move at all.

A small dust on sensor really can't tell by naked eye.

There is a tool kit produced by the same company who produce "Lens Pen", it's cheap and safe to clean the sensor by yourself.

I just saw that in the PMA show last month.

Cheers,
Piero

[sannaso]

thanks very much!!

[salonsip2005]

唔好意思,講得唔清楚, 你推開個鏡後連接位個支控制光圈0既金屬, 咁就睇到支鏡有冇野係入面呀