The FotodioX WonderPana 145 Core Unit for Canon 14mm Lensis compatible with the FotodioX WonderPana 145, FreeArc, and Absolute filter holder systems. It helps to reduce reflections as well as glare by filtering out light that has become polarized due to reflection from a non-metallic surface. The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges, and filters, this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.

A circular polarizer only differs from a linear polarizer in that it contains a quarter wave plane in addition to the linear polarizing filter. The addition of this quarter wave plane is to circularly polarize the linearly polarized light for the use of auto focus and exposure functions. Due to how the light is broken down and filtered with a linear polarizer, auto focus and exposure accuracy become skewed during use. When the light becomes circularly polarized, it permits the use of these functions.

The FotodioX 145mm Circular Polarizer Filter is constructed from optical glass for clarity as well as color fidelity and features lightweight, aluminum-alloy filter rings. A rear filter ring connects to a compatible filter holder while four brass knobs along the side of the front filter ring allow the filter glass to be easily rotated. This provides the ability to achieve the desired degree of polarization even if another filter is placed in front of the FotodioX 145mm Circular Polarizer Filter.

For Canon EF 14mm f/2.8L II USM    WonderPana 145 Core Unit    145mm Circular Polarizer Filter    1.25 to 8x Filter Factor, +0.3 to 3 Stop    Helps to Eliminate Reflections and Glare    145mm Center-Pinch Snap-On Lens Cap

Helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.

Polarizing filters arrange, and filter, directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of the light.

Clears up haze in distant landscapes and provides more saturated, vivid colors.

Strongest effect when used at a 90° angle from the sun.

Circular polarizers are ideal for use with digital cameras and autofocus lenses where a linear polarizer will often disrupt auto exposure and focus features.

1.25 to 8x filter factor reduces exposure by 0.3 to 3 stops.

Constructed from optical glass for clarity.

Lightweight, aluminum-alloy filter rings along with four brass side knobs allow the filter glass to be easily rotated. The desired effect can be easily achieved even if another filter is placed directly in front.

Filter pouch included for storage and transport.

Related Questions and Answers

Q: 1. Will this fit in the top compartment of the new shiimoda action v2 25? Will it fit in the back compartment as well?

A: The Shimoda Designs Core Unit Insert (Small, Parisian Nights) does not fit in the top compartment of the Shimoda Designs Action X25 V2; however, it fits in the main section.

Q: 2. Explore 30 can fit in

A: Unfortunately Shimoda Designs Large DV Core Unit would not fit in the Shimoda Designs Explore 30 Backpack. the exterior dimensions of the dividers are (WxHxD) 11.4 x 15.0 x 8.3" while the interrior of the explore 30 backpack is (WxHxD) 17.32 x 11.42 x 6.69".

Q: 3. Will this hold a GFx100 with a 32-64 lens and extra lense?

A: Yes, the Shimoda Designs Core Unit Insert (Small, Parisian Nights) can fit the Fuji GFX100 with the 32-64mm lens attached. There is room for a second lens too, but it would depend on which lens specifically.

Q: 4. Will this unit work for a Nikon 180-600?

A: Yes, the Shimoda Designs Large Core Unit for Mirrorless Camera will fit the Nikon 180-600 lens.

Q: 5. Would this fit in the Explore V2 35 in addition to the medium core unit?

A: Yes, you can feet Shimoda Designs Core Unit Insert (Small) inside Shimoda Designs Explore v2 35 Backpack with the Shimoda Designs Medium Mirrorless Core Unit Version 2 included with the backpack.

Q: 6. Will this fit into the ORIGINAL 40L backpack?

A: Yes, the Shimoda Designs DSLR V3 Core Unit (Large) will fit inside the Shimoda Designs Explore 40 Backpack (BH #SHE40BPBN).

Q: 7. after repeated use, how does the Velcro hold up in these core units?

A: It holds up extremely well. I own two Shimoda bags and their inserts are incredible.

Q: 8. Could I stack the small core on top of the medium mirrorless core in my Explore V2 30L?

A: The Small core does not fit on top of the medium core in the Explore V2 30L.

Q: 9. Will the Designs Large DV Core Unit fit in the Shimoda Explore 40 Backpack?

A: The dimensions of the Shimoda Designs Large DV Core Unit (Parisian Nights) measures 11.4 x 15.0 x 8.3". It is too deep for use inside the Shimoda Designs Explore 40 Backpack (Blue Nights), whose interior measures 17.32 x 11.42 x 6.69" in size. The Shimoda Designs Large DV Core Unit (Parisian Nights) is designed for use inside the Shimoda Designs Action X70 Backpack, Carry-On Roller Version 2, and DV Roller.

Q: 10. Has anyone configured this insert to hold a Sony A7 series body with a 100-400 lens and the 1.4 extender all connected. Please send an image?

A: While we have not tested that exact set up, I am confident it would fit. The total length of the camera, teleconverter and lens would be about 12.5 inches and the case has in interior dimension of 15 inches.