ProTama (SQ-100) HD Square Filters & Accessories
Publish time 2017-03-23 13:38
ProTama (SQ-100) HD Square Filter Series
-
Germany Optical Glass
-
2mm Glass Thickness
- 2 sides Nano Multi-Coating
- 2 sides Water & Oil Repellent Coating
- 2 sides Scratch & Stain Resistant Coating
Overview:
ProTama square filter is made of German optical
glass. The use of Schott optical glass gives our square filters the
excellent properties of chemical resistance, high-temperature
resistance, and abrasion resistance. With an ultra thin noble metal
multi-coating, ProTama square filters are a low reflection and able to
avoid color differences while it also being water, stain, and scratch
resistant.
GND (Graduated Neutral Density)
This filter is a half neutral density and a half clear. As the limited latitude of digital cameras cannot allow for shooting environments with strong light/dark ratios, GND filters are often used to balance the light contrast between strong and weak light.
RGND (Reverse Graduated Neutral Density)
This filter is a half neutral density and a half clear in reverse. As the limited latitude of digital cameras cannot allow for shooting environments with strong light/dark ratios, GND filters are often used to balance the light contrast between strong and weak light.
HGND (Hard Graduated Neutral Density)
The filter is a hard half neutral density and a hard half clear. As the limited latitude of digital cameras cannot allow for shooting environments with strong light/dark ratios, GND filters are often used to balance the light contrast between strong and weak light.
HGND (Hard Graduated Neutral Density)
The filter is a hard half neutral density and a hard half clear. As the limited latitude of digital cameras cannot allow for shooting environments with strong light/dark ratios, GND filters are often used to balance the light contrast between strong and weak light.
ND (Neutral Density)
This filter is used to reduce the amount of light entering the lens without affecting the image colors. ND filters are one of an important tool to reduce light, with the ND filter, photographers are able to capture an image with large aperture and shallow depth of field under strong sunlight, and it can attain long-time exposure too.
The
traditional neutral density filter isn't perfect since they don’t reduce
the intensity of all wavelengths equally. More importantly, a good
quality of ND filter should perform an equal wavelength. To have a good
performance, we spent a long period on grinding and polishing with our
Germany Optical Glass during the manufacturing process. This greatly
produces a smooth and balanced surface of HD quality glass. With a
rough surface glass which will cause diffuse reflection and it’ll affect
telephoto zoom lenses couldn’t in focus.
Square Filter Installation:
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