
B+W
B+W 66-1001705 77mm Clear MRC Lens Protection Filter
★★★★★
Premium 77mm clear lens protection filter with scratch-resistant MRC coating and brass F-Pro mount.
$63.99*
Check availability
*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.
Notice a mistake? Let Us Know
Overview
Key Features
This filter uses our standard B+W F-Pro filter mount, which has a front accessory thread and is made of brass.
MRC by B+W is not only an extraordinarily effective multiple layer coating, it is also harder than glass, so that it protects filters from scratches, and it is also water and dirt repellent, thus facilitating filter maintenance.
Manufactured from Water-White Schott Glass
Specifications
Brand
B+W
Model
66-1001705
Filter Type
Clear (Protection)
Diameter
77mm
Coating
Multi-Resistant Coating (MRC)
Glass
Water-White Schott Glass
Mount
F-Pro Brass
Front Thread
Yes
Pros & Cons
👍 Pros
- Water-White Schott Glass delivers excellent optical clarity with no color cast
- MRC coating is harder than glass, providing superior scratch resistance
- Water and dirt repellent surface makes field cleaning quick and easy
- Brass F-Pro mount is durable and resistant to cross-threading or binding
- Front accessory thread allows stacking additional filters
👎 Cons
- Standard F-Pro mount profile may cause vignetting on some ultra-wide-angle lenses
- Higher price than basic UV or protection filters from budget brands
- Clear filter offers no UV absorption, only physical protection
- Single 77mm size requires step-up rings for smaller lens threads
Frequently Asked Questions
Does this clear filter affect image sharpness or color accuracy?
No. The Water-White Schott Glass is optically neutral and the MRC coating maximizes light transmission, so the filter has no visible impact on image quality.
What does the MRC (Multi-Resistant Coating) actually protect against?
The MRC coating is harder than glass itself, resisting scratches from everyday handling. It also repels water and dirt, making the filter surface much easier to clean in the field.
What is the F-Pro mount and does it accept additional filters or accessories?
The F-Pro is B+W's standard brass filter mount. It includes a front accessory thread, so you can stack additional filters or attach lens caps on top of it.
Will this filter cause vignetting on wide-angle lenses?
The standard F-Pro mount has a traditional profile. On ultra-wide lenses at 77mm, there is a slight risk of vignetting at the widest focal lengths. B+W's slim or nano mount versions are designed for those situations.
Is this filter only for protection, or does it add any optical effect?
It is purely a protection filter. It adds no polarization, neutral density, UV cut, or color effect — its sole purpose is to shield your front lens element.