My Cart
Your cart is emptyReturn to Shop
Calculate Shipping
Apply Coupon
LABOR DAY SALE - USE CODE "KVLDW25" FOR $75 OFF ALL ORDERS $350 AND UP / FREE SHIPPING FOR ALL DOMESTIC ORDERS OVER $100
0
Education

Dust Reduction

March 4, 2015
Dust Reduction Filters

In many conversions, the dust filter has to be removed. The reason for this is that the piezo element in the dust reduction system is usually glued directly onto the IR cut filter. In some cases, the camera uses two filters, and only the outer one has dust reduction. In many cases, both of these filters block infrared. In some cases, the dust filter does not block infrared. See below:

From left to right, a Lumix GF1 dust filter, an EPL1 dust filter, an EPL1 lowpass filter, and a replacement clear filter.

Dust reduction filters

Now the same filters, shot in infrared. You can see the GF1 dust filter blocks infrared, while the EPL1 filter does not.

Dust reduction filters

To confirm it, here is the transmission curve of the EPL1 dust filter. The IR transmission is very high and stays at about 90% throughought the sensor’s sensitivity range, so we leave them in place after a conversion. There is some UV blockage in this filter as is typical for most glass which should be taken into consideration if converting an Olympus camera for UV purposes.

Dust reduction filters

Other cameras have a piezo element that clips on and is not permanently glued, like many of the NEX filters.

The cameras in which we can retain the dust elimination systems are listed below.

Olympus E-P1
Olympus E-PL1
Olympus E-P2
Olympus E-PL2
Olympus E-PM1

Sony NEX-3
Sony NEX-5
Sony NEX-C3

Sony A-series cameras

Education

Related Posts

February 25, 2022
A CPL, or circular polarizing filter, is just one of the many tools you can use to perfect your shots.
October 14, 2022
Here are some of my thoughts on planning, best lighting for infrared, and considerations for landscape photography in general.
December 1, 2023
The more you’re able to get the whole group on your team and ready to work together, the better!
March 18, 2022
One of the more well-known applications for an ND filter is taking long exposures. Here’s how that works.

Kolari’s EU store
is now open! 

Filters and accessories now shipping from Slovenia with VAT included and quick DHL shipping.
kolaris-eu-store_is-now-open
Skip to content