The FotodioX WonderPana FreeArc Core Unit Sigma 14mm Lensis a general use, clear filter that is compatible with the FotodioX WonderPana 145, FreeArc, and Absolute filter holder systems. It is designed to absorb ultraviolet light and reduce the bluish cast of daylight. Aside from the reduction of unwanted blue casts, no additional coloration or contrast is created, and adjustments to exposure are not required while using this filter.

This filter is constructed from optical glass for clarity as well as color fidelity and features a lightweight, aluminum-alloy filter ring. The filter ring includes a brass side knob that provides increased leverage when mounting or unmounting the FotodioX 145mm UV Filter.

This UV filter is also useful as a general protective filter to leave over lenses at all times. Such filters help to reduce dust and moisture from reaching your front lens element and provide additional protection in case of drops or situations where scratching could occur.

For Sigma 14mm f/2.8 EX Aspherical HSM    WonderPana FreeArc Core Unit    Use with WonderPana 6.6" Holder Bracket    With Bracket, Holds 6.6" Wide Filters    Bracket Rotates 360° with FreeArc    Holds up to Two 6.6" Wide Filters    Combine a 6.6" Wide and a 145mm Filter    145mm UV Filter, Clear and Protective    Absorbs Ultraviolet Light    145mm Center-Pinch Snap-On Lens Cap

Absorbs UV light and reduces bluish cast of daylight

Does not require adjustments to exposure while in use

Creates no additional coloration or contrast

General protection filter reduces dust, moisture, and scratches from reaching lens elements

Constructed from optical glass for clarity and color fidelity

Lightweight, aluminum-alloy filter ring with brass knob that provides increased leverage for easy installation and removal

Filter pouch included for storage and transport

Related Questions and Answers

Q: 1. Is a filter holder available yet for this lens, such as a NiSi or Kase?

A: As of 07/21/23, there is no filter holder available yet for the Sigma 14mm f/1.4 DG DN Art Lens.

Q: 2. If I have Canon and Sony system, but I mostly use this lens on Sony a7 system. Should I get Canon EF mount with adaptor or should I just get the Sony mount? Is the quality gonna be affected with Canon EF mount with adapter?

A: You can not adapt this lens to Canon EF you can porches Sigma 14mm f/1.8 DG HSM Art Lens for Canon EF BH #SI1418CEF

Q: 3. Can it be balanced on a mini tripod?

A: Its a heavy lens, it is not well balanced either, most of the weight is away from the camera. It does not have a collar. Im not sure how mini of a tripod youre referring, but in general, Id say using this lens with anything less than a substantial tripod and head would be a bad idea.

Q: 4. Does anyone know the focus throw of this lens, as well as the physical outside diameter of the focus ring?

A: The diameter of the focus ring on the Sigma 14mm f/1.8 DG HSM for Canon is 3.76". Focus "throw" is not a published specification.

Q: 5. Will this lens fit on a Canon Rebel t7i?

A: Yes it will. It is an EF Mount lens and the T7i accepts all EF Mount lenses.

Q: 6. How does this perform with canon 90D?

A: The 90D is a crop sensor camera so you will have crop of a 1.6 on the canon bodies. Making this lens a 22.5mm (Full Frame FOV)

Q: 7. Can I use this on my Nikon D300?

A: Thank you for your interest in Sigma products. The Nikon mount version of this lens includes an electromagnetic diaphragm mechanism. Therefore, please make sure both lens and the camera have the latest firmware before using it on your camera.

Q: 8. Can I use the megadap2 adaptor with this lens for the Nikon Z ?

A: The Megadap ETZ21 Sony E-Mount Lens to Nikon Z-Mount Autofocus Adapter will fit the Sigma 14mm f/1.4 DG DN Art Lens (Sony E) to a Nikon Z series camera. As far as auto focus support it is too early to tell.

Q: 9. Does auto focus work with Nikon Z6/Z7 bodies with FTZ adapter?

A: Yes, you will get auto focus.

Q: 10. Will this focal length result in vignetting on a full frame camera? I currently have a Tokina 11-20mm and it vignettes hard below 16mm.

A: DG is Sigma's full frame series, the DC is their cropped sensor series. The lens displays a slight amount of vignetting in the corners when shot wide open at f/1.8, which is corrected with Lightroom when using the lens profile.