The Schneider 6.6x6.6" 4mm Green True-Streak Filteris designed to be used perpendicular to a point light source such as the sun, a light bulb, or a candle. Within the filter's glass is a combination of fine line types whose action is limited to point light sources. Upon those light sources, those lines create the effect of a scene or image that has been recorded with an anamorphic lens and then displayed using a complementary reverse projection lens. This can result in prominent, elongated streaks that are symmetric and extend horizontally from each point light source for the purpose of drawing attention to a specific part of the frame, or to create a visually dramatic effect.

If an image or footage is captured with an anamorphic lens for the primary purpose of obtaining a greater aspect ratio than what is possible when only using spherical lenses on a 35mm format, the direct result will appear compressed and distorted. Projecting this compressed and distorted footage or imagery through a reverse anamorphic projection lens allows elements within the scene to be viewed in their correct proportions. A complementary effect of this process after it is completed is the creation of elongated, blue-colored, horizontally symmetrical highlights from point light sources that can extend through the frame.

Many cinematographers and photographers find this effect desirable and the Schneider 6.6 x 6.6" 4mm Green True-Streak Filter is intended to allow such highlights to be easily reproduced when using optics that do not have an anamorphic design. This filter renders the streaks it helps to create with a green hue, instead of the blue highlights generated when using traditional anamorphic optics that are not designed to suppress streaking. True-Streak Filters that are formulated to create red, orange, yellow, blue, pink, or violet banding instead of green are also available, as well as Clear True-Streak Filters that can allow existing colors or lack of colors displayed by point light sources to be maintained.

The line types within this filter's glass are placed 4mm apart from each other. True-Streak Filters with spaces of 3mm, 2mm, or 1mm between their lines are also available where this filter type's effect becomes progressively stronger as the spacing between those lines is decreased.

This filter is most effective for pictures where the light source used to generate the streak effect is a highlight with a significant degree of contrast from the rest of the image. It is constructed from water white glass for clarity as well as color fidelity.

Streak Effect from Point Light Source    Anamorphic, Symmetric, Elongated Streaks    Horizontal Streaks from Light Source    Green Color for Streaks    Water White Glass Construction    Padded Pouch

• Creates prominent, elongated streaks that are symmetric and extend horizontally from point light sources within a scene
• Draws attention to a specific part of the frame, or can create a visually dramatic effect
• Allows the effect of anamorphic optics upon highlights to be reproduced when using optics that do not have an anamorphic design
• Creates green-colored streaks
• Constructed from water white glass for optical clarity and color fidelity
• Padded pouch included for storage and transport

Related Questions and Answers

Q: 1. Will this work on a Canon R5? How much of the sensor would the circular image use actually fill?

A: The Canon R5 will be automatically set to Crop mode if you mount the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Canon RF on it, so you would use only an APS-C size part of the full-frame sensor. The lens will make a circular image surrounded by black in this small section of the sensor.

Q: 2. good for Cannon EOS 60D???

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds is only compatible with Olympus and Panasonic cameras. It is not compatible with Canon cameras.

Q: 3. do this lens work fine with fx3 and fx6 full frame cameras?

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Sony E will work on a full frame camera but it will only produce a small circle in the frame. It is made for use with a crop sensor.

Q: 4. Does this lens accept filters ?

A: The shape of the front glass element on the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds doesn't allow the lens to accept filters.

Q: 5. Will I get vignetting (black corners) with this lens on a nikon z30?

A: Yes, Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Nikon Z creates a circular vignetting effect when mounted on Nikon Z30 or APS-C sensor mirrorless cameras.

Q: 6. Will this work on a Sony a7R3?

A: The answer is technically yes. This lens will fit on your Sony but it's made to work on Sony APS-C/cropped sensor cameras. So if you put this on a full frame you're going to get a cropped sensor/APS-C framing and lower resolution.

Q: 7. Is this lens compatible with Canon EOS 70D? If not, is there an equivalent lens for my camera (DSLR)?

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Canon EF-M is designed for Canon mirrorless cameras that use the EF-M lens mount, while the Canon EOS 70D DSLR camera uses the larger Canon EF-mount and EF-S lens mount. The above lens would not be compatible for use on the Canon EOS 70D DSLR camera. If you are looking for a circular fisheye lens designed for the EF/EF-S lens mount used on the Canon EOS 70D DSLR camera, I would instead recommend the Lensbaby 5.8mm f/3.5 Circular Fisheye Lens for Canon EF, B&H # LE5835CFC, for your usage needs.

Q: 8. Is it compatible with BMPCC4K? In case not, is there any adaptor?

A: Yes. The Blackmagic Design Pocket Cinema Camera 4K, B&H # BL4KPKCAM, uses the Micro Four Thirds lens mount, and the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds uses the Micro Four Thirds lens mount, you may use the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds on the Blackmagic Design Pocket Cinema Camera 4K. Do note that the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds is a fully manual lens, so you would have to focus the lens manually and adjust the aperture of the lens using the aperture ring built onto the lens.

Q: 9. Will this work with a Panasonic GH4? Or Panasonic S2?

A: This 7Artisans 4mm f/2.8 Circular Fisheye Lens for Micro Four Thirds can fit the Panasonic GH4. It does not work on the Panasonic S2.

Q: 10. how would this lens perform on a FX Z mount?

A: Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Nikon Z will work on an FX Z mount camera. However since it is an apsc lens the circular image will be very small in the frame. You can crop in later but the resolution will be much lower.