My readers know why I am not buying Canon mirrorless camera now. When the EOS R1 debuts next year, I may be interested in acquiring one. The semi-pro EOS-R5 mirrorless camera will be announced the first week of July. It will be positioned below the EOS-1D X Mark III and may have the following specifications :
All new 40+ MP full frame CMOS sensor
5-axis IBIS (In Body Image Stabilization)
About 5 stops with IBIS, 8 stops with IS in lens
12 fps with Viewfinder, 20 fps with Live View
Signature scroll wheel in back of camera (finally)
Irvine, California, May 15th, 2020 – Aurora Aperture Inc. today has introduced a next-generation rear mount filter system.
The new next-generation rear mount filter system supports the Canon 11-24mm F4L USM and other select Canon wide-angle lenses, Nikon AF-S 14-24mm f/2.8G, Sigma 14-24mm F2.8 DG HSM Art EF mount and Sigma 14mm F1.8 DG HSM Art EF mount, Sigma 14-24mm F2.8 DG DN Art E and L mount, and Sony 12-24mm F4 G.
“In 2017 we introduced a rear mount filter system for the Canon EF 11-24mm F4L USM: The Aurora Aperture CR format, an industry-first rear mount glass filter,” said Jeff Chen, founder, and CEO of Aurora Aperture Inc. “The next generation rear mount filter system is a major upgrade from the CR format filter system. It expands supported lenses to several other popular ultra-wide-angle lenses, at the same time adds more filter choices. More importantly, the new system features a robust magnetic quick-release mechanism. ”
Next Generation Rear Mount Filter System
The next generation rear mount filter system improves usability by using an innovative magnetic mounting system. A filter is installed to a supported lens simply by attaching the filter onto the magnetized adapter on the rear of the lens. The magnetic quick release feature greatly simplifies the filter installation, especially for photographers working in harsh outdoor environments.
Designed in California, the Aurora Aperture next generation rear mount filter system provides a simple and elegant solution for ultra-wide-angle lenses that lack a front filter thread. Users would normally have to use either low-quality gel filters in the rear of the lens or otherwise use a massive front mount filter with sizes up to 186mm mounted onto a bulky adapter.
The Aurora Aperture next generation rear mount filters are very compact and lightweight, making them much easier to carry. The filters are made from high-quality Schott D 263® T eco thin glass* with multi-layer nano-coatings for their light reduction capability, resulting in accurate color rendition and minimizing field curvature. These filters can meet the high-resolution demands of 4k/8k video, and the high pixel density of modern-day sensors.
A PFPE based nano-coating is applied to both optical surfaces, ensuring the protection of filters against water, oil, dust, and dirt. This coating allows filters to be cleaned as substances do not adhere to the filter easily and are removed with little effort. The PFPE based nano coating has a 110-degree static contact angle, one of the best in the industry.
The filter glass is protected by a high strength stainless steel frame. The filter frame makes the filter easier to handle and adds protection to the filter glass. Aerospace-grade 7051 aluminum alloy is used for the filter adapter. This material is practically twice as strong as the 6000 series aluminum alloy used in conventional lens filters.
Available Filters
PowerND™, neutral density (ND) filters of light reduction strength in :
ND4 (2 stops)
ND16 (4 stops)
ND64 (6 stops)
ND256 (8 stops)
ND4000 (12 stops)
PowerGND™, soft graduated neutral density (GND) filters of light reduction strength in :
ND3 (1.5 stops)
ND6 (2.5 stops)
ND12 (3.5 stops)
PowerDusk™, a light pollution reduction filter for astrophotography and for cityscape photography in blue hours by reducing artificial light pollution.
Supported Lenses Canon EF Rear Mount
EF 8-15mm f/4L Fisheye USM
EF 11-24mm F4L USM
EF 14mm f/2.8L USM & EF 14mm f/2.8L USM II
EF 15mm f/2.8 Fisheye
EF 16-35mm f/2.8L USM (EF 16-35mm f/2.8L II USM not supported)
EF 17-35mm f/2.8L USM
EF 17-40mm f/4L USM
Nikon AF-S 14-24mm f/2.8G ED
Sigma EF Rear Mount
Sigma 14-24mm F2.8 DG HSM Art
Sigma 14mm F1.8 DG HSM Art
Sigma 14-24mm F2.8 DG DN Art
Sony E mount
L mount
Sony FE 12-24mm F4 G
Availability and Pricing
The Aurora Aperture next generation rear mount filters will be available through a Kickstarter crowdfunding campaign starting in May 2020. The general public and dealer availability is expected in September 2020. The price of filters will start from $43 and goes up to $113 per filter, depending on the type of filter. The price of lens adapters will be $35 to $41, depending on the supported lenses.
Despite the challenge posed by the Coronavirus pandemic, Canon is expected to launch the much anticipated prosumer EOS R5 full frame mirrorless camera in the month of July as well.
The less expensive, consumer version will be known as the EOS R6, with the following rumored specifications :
