Installation Service for the Rear Filter Holder FHR-11 on the SIGMA 14-24mm f/2.8 DG HSM | Art for Canon

From Sigma:
 
Responding to popular demand, the SIGMA Corporation is pleased to announce that another lens is compatible with the Rear Filter Holder FHR-11.
 
The chargeable installation service of the Rear Filter Holder FHR-11 for the SIGMA 14-24mm F2.8 DG HSM | Art for Canon starts from May, 2018.
 
The Rear Filter Holder FHR-11 is an accessory exclusively designed for the SIGMA 14-24mm F2.8 DG HSM | Art (for Canon) and the SIGMA 14mm F1.8 DG HSM | Art (for Canon). It enables photographers to use a sheet filter on the lens. By attaching the Rear Filter Holder FHR-11 to the rear of the lens, it allows more freedom for photographic expression.
 

For details of the price and the commencement date of the service, please contact your nearest authorized SIGMA subsidiary/distributor.
 
PACKAGE CONTENTS (UPC Code: 0085126 934866)
 

• Rear Filter Holder FHR-11
• Guide template
• Fixing screws (3 pieces)

Please Note:
 

• Any damage or faults caused by attaching the filter holder on your own will not be covered by the warranty.
• This product is exclusive to the SIGMA 14-24mm F2.8 DG HSM | Art 018 for Canon and the SIGMA 14mm F1.8 DG HSM | Art 017 for Canon. Please do not attempt to attach it to any other lenses or mounts. There is a risk that it may cause damage to the lenses and cameras.
• Please be careful to avoid scratches to the lens or the electrical contacts when attaching the filter holder.
• Please ensure not to drop the small fixing screws inside the lens.
• Please ensure you remove the filter after shooting as it could scratch the rear element of the lens.

If you would prefer to install the accessory yourself, the Sigma Rear Filter Holder FHR-11 is available at B&H and Adorama.