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In this, our 3rd part of the Baader Universal Filter Changer (UFC) system, we will look a little more closely at the UFC filter sliders. Below is an updated simplified diagram of the Baader UFC system. To catch up, you can find the first part of the series - a general introduction here, and the second part about the UFC Base here. Today in this blog we are dealing with the items in yellow.
Baader UFC simplified diagram
The image below shows the three UFC filter slider models available. More about these are individually discussed later.
Baader UFC Filter sliders: from the left: 2"/M48 mounted filter slider; 50.4mm diameter unmounted filter slider ; 50x50mm square filter slider.
All the UFC filter sliders feature
The filter slider is made from a single piece of aluminium and anodised black. Each slider is ~101mm long (from handle to brass pin), ~75mm wide and ~9mm thick and the weight is approx 55g.
There are three versions of the UFC filter slider which accommodate three different types/sizes of filters.
The 2"/M48 Filter Slider
Filter slider for 50.4mm round unmounted filters
UFC 50x50mm square filter holder. Left:empty holder with four filter securing screws. Right: filter in place.
As mentioned previously, if you already have, or want to use smaller sized filters, you can use them with the UFC system. Use of these smaller filters is achieved using an appropriate optional Auxillary (Aux) Filter Holder (a "drop-down filter size adaptor") in conjunction with the 50.4mm diameter filter slider (#2459113). There are three "sizes" of Aux Filter Holder available:
All three Aux Filter Holders have the same outside diameter and simply drop in to the 50.4mm unmounted filter slider, with the AUX holder being secured in place using three hex screws (i.e. the AUX holder "takes the place" of an unmounted 50.4mm filter).
The images below show how each of these adaptors look and how they are used with the 50.4mm filter slider.
The 1.25" mounted Aux filter holder (left) and D50.4mm filter slider with Aux holder in place.
In the image above the Aux filter holder for 1.25" mounted filters is shown on the top left. The image on the top right shows the holder in place in the filter slider with a 1.25" mounted filter attached. The filter simply screws into the Aux holder (either before the Aux holder is secured into the filter slider or after). The image on the bottom left and right shows the underside of the Aux holder and the underside when it has been attached to the filter slider (bottom right).
The images above and the following description applies to both the 31mm round- and 36mm-round unmounted Aux filter holders. The image on the top left shows what the Aux holder looks like along with the supplied 3 hex screws and washers for securing the filter in place in the holder. The image on the top right shows the Aux holder in place in the UFC filter slider with an unmounted 31/36mm filter in place. The image on the bottom right is the underside of the filter slider with the Aux holder and filter in place.
Next time we will look at the camera-side adaptors.