The Schneider 4 x 4" 4mm Red True-Streak Filter is 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 4 x 4" 4mm Red 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 red 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 orange, yellow, green, blue, pink, or violet banding instead of red 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    Red 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 red-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. Can I zoom in to get rid of vignetting (black corners) with this lens on a nikon z30?

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Nikon Z is a lens with a fixed focal length of 4mm, so you cannot zoom in with this lens.

Q: 2. Would it be possible to adapt this to C mount? The focal length is wide enough that it sounds great for C mount super 8mm cameras. Do you have adapters from any of these mount options to C? And would the flange be off?

A: Unfortunately, we do not have any lens mount adapters designed to connect a lens designed for the Canon EF-M lens mount onto a camera that uses the C-mount lens mount.

Q: 3. 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: 4. 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.

Q: 5. Does this lens mount on a RF mount as well?

A: No, this is for an EF-M mount only.

Q: 6. Would the L mount version of this lens clear the grip on the Lumix S1 or S5?

A: Unfortunately this lens will see the handgrip of Panasonic Lumix S1.

Q: 7. can you use this filter with the blue snowball?

A: This stand has a 5/8'' thread and should screw into the bottom of the Snowball.

Q: 8. Does this lens make a full circular image on a Fujifilm X sensor?

A: This won't work on Fuji. You will need this lens that has a Fuji X mount. It does create a circular image on Fuji X sensor. https://www.bhphotovideo.com/c/product/1542241-REG/venus_optics_ve428fx_laowa_4mm_f_2_8_fisheye.html

Q: 9. When used on the Panasonic Lumix S5, is the grip visible?

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Leica L will see the grip on the Panasonic Lumix S5 and produce a tiny image. This lens is for cameras with an APS-C size sensor.

Q: 10. Does this lens make a full circular image on a MFT sensor?

A: It is not quite a full circle. Please take a look at the sample images.