The William Optics FLAT7A Flattener ensures the maintenance of a uniform image quality - flatness, because the flattener is a "flattener" - both in the center and on the edge of the frame, eliminating the negative impact of the refractor's optical system, as a result of which it moves away from the center of the frame, the sharpness of recorded subjects gradually deteriorates.

The Flattener has been designed with full-frame sensors in mind and works with the following systems (through the appropriate M48 ring):

• M4 / 3
• Sony α
• Nikon
• Pentax
• Canon
• Fuji

Technical parameters

• times: 0.8x
• construction: triplet with air gap
• regulation: yes
• focuser mount: M92 thread
• camera mount: M48 thread
• possibility of mounting the filter: yes, thread M48
• lens material: Ohara optical glass (Japan)
• anti-reflective coating: yes, full multi-layer coating
• compatibility with CCD cameras: yes
• compatibility with CMOS cameras: yes
• Filter wheel compatibility: yes

Back focus

• FLT132: 69.24 mm
• FLT156: 65.3 mm
• GT102: 70.6 mm
• GT153: 65.4 mm
• Z126: 67.76 mm

Diameter of full illumination circle

• FLT132: 44.4 mm
• FLT156: 44.4 mm
• GT102: 44.4 mm
• GT153: 44.4 mm
• Z126: 43.4 mm

Product description on the manufacturer's website: https://williamoptics.com/flat7a

Kit components

• William Optics FLAT7A flattener

Warranty

24 months