[joachim]

Hi,



I noticed this morning that I have a piece of dust caked to filters in front of the sensor of my E-P1, which affects image quality from f/7.1 in critical images. With a hurricane blower I could remove some of the dust pieces, but the worst offender is still solidly caked to the filter assembly <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/sad.gif' class='bbc_emoticon' alt='' />



Anyone experience on what to do?

Some of the products seem to come in sizes for 1x, 1.3x and 1.6x sensors. I understand in that terminology the µFT is a 2.0x sensor.



Thanks in advance

Joachim

[dave9t5]

[quote name='joachim' timestamp='1339346906' post='18828']

Hi,



I noticed this morning that I have a piece of dust caked to filters in front of the sensor of my E-P1, which affects image quality from f/7.1 in critical images. With a hurricane blower I could remove some of the dust pieces, but the worst offender is still solidly caked to the filter assembly <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/sad.gif' class='bbc_emoticon' alt='' />



Anyone experience on what to do?

Some of the products seem to come in sizes for 1x, 1.3x and 1.6x sensors. I understand in that terminology the µFT is a 2.0x sensor.



Thanks in advance

Joachim

[/quote]



See here:

http://www.visibledust.com/sensorsizes.php

http://www.visibledust.com/ProdRec_975x300.php#13xsize



The swabs for the larger sensors (actually cleaning the low-pass filter) should work on the µFT sensors, just need to swab up/down instead of left/right!



APS-H sensor: 28.7 x 19mm

APS-C sensor: 23.6 x 15.7mm or 22.4 x 14.8 mm

µFT sensor: 17.3 x 13mm



VisibleDust recommends the 1.3x/20mm swab for most µFT (including Oly EP-1) and the 1.6x/16mm swab for some other µFT. (I suppose the low-pass filter is slightly bigger than the sensor itself on some models.) In any case, the smaller 16mm swabs should fit.

[miro]

Can you determin the type of dust?

The worse think will be if it is from oil/fet.

I use

1. Blower

If not help

2. Statics brushes from visible dust. - they are available in diffeent sizes and small one for chamber. Brrushes for chamber are prety small.

If not help

3. swabs.



Honestly I have never used swabs.

My advice will be to try with static brushes.Tose for chamer are very small. Before use you have to blow air to charge the hair.

That is the way how canon prupose to do that.



Maybe it is good idea to ask Olimpus hwat do they prupoose.



Sory that i cannot give you the direct answer.

greetings

Miro

[Sylvain]

[quote name='joachim' timestamp='1339346906' post='18828']

Hi,



I noticed this morning that I have a piece of dust caked to filters in front of the sensor of my E-P1, which affects image quality from f/7.1 in critical images. With a hurricane blower I could remove some of the dust pieces, but the worst offender is still solidly caked to the filter assembly <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/sad.gif' class='bbc_emoticon' alt='' />



Anyone experience on what to do?

Some of the products seem to come in sizes for 1x, 1.3x and 1.6x sensors. I understand in that terminology the µFT is a 2.0x sensor.



Thanks in advance

Joachim

[/quote]



Joachim, I had to clean mine once.

What I did was a wet cleaning (it was mostly stains, rather than dust or particles) using one of the sensor swab I had for my canon aps-c camera. The catch is that it's too wide for it to be used in horizontal motion on the smaller m43 sensor. So I used it vertically rather than horizontally. That way, I had to swipe at least twice to cover the surface (normally it's designed to cover the surface in one swip forth, one swipe back) but anyway I never managed to do it with only one trial on my canon and I always ended up using 6-7 swabs (you're not supposed to wipe back and forth too many times with the same swab, hence me using many of them). Wet cleaning with swabs is a rather annoying exercise but not as bad as it seems. You do need to be on a good day to perform it <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='' />



But I remember seeing on that swab brand that 43 sensors owners were recommended to use APS-H swabs but current website doesn't do so anymore (Looking at sizes it wouldn't fit so maybe I made that up?) and recommends the same size as APS-C. http://www.photosol.com/store/pc/viewContent.asp?idpage=1



hope this helps !