The Schneider 4x5.65" 4mm Red 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 4 x 5.65" 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. Is there a version for RF?

A: No, the 7artisans Photoelectric 4mm f/2.8 Circular Fisheye Lens does not come in a RF version. Currently we have a 7artisans Photoelectric 4mm f/2.8 Circular Fisheye Lens for Canon EF-M.

Q: 2. Does this work with this microphone? https://www.bhphotovideo.com/c/product/844096-REG/Audio_Technica_AT2005USB_AT2005USB_Cardioid_Dynamic_USB_XLR.html/mode/edu. and are any other components necessary

A: Hi, yes this does work with the Audio Technica microphone. Please note, the shockmount in the picture is not included though. You may consider the Audio-Technica AT8410A Shock Mount (Spring Loaded) BH #AUAT8410A - https://www.bhphotovideo.com/c/product/68138-REG/Audio_Technica_AT8410A_AT8410A_Shock_Mount.html. Thank you for shopping at B&H!

Q: 3. 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: 4. 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.

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 lens work with the X5S DJI camera?

A: Yes, the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds, B&H # VE428MFT, would be compatible for use with the DJI Zenmuse X5S. It is a fully manual focus lens, so you would have to set the focus at infinity when using the unit with the DJI Zenmuse X5S.

Q: 7. 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: 8. Does this lens mount on a RF mount as well?

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

Q: 9. If you use this inside a closet would it be enough for a good quality VO recording?

A: If you are inside a closet with towels and blankets on the shelves, and an assortment of clothes hanging up, you will probably not need a reflection filter like this. That recording environment will already stop most of the echo and reflection this is designed to stop. The main job of a reflection filter like the Auray RF-C20 is to absorb and diffuse some of the sound energy from the voice, and also to prevent echoes of that sound from entering the rear of the microphone.

Q: 10. Can you use it with the Auray broadcast arm?

A: No. The Auray RF-C20 Studio Isolation Filter weighs 8.2 pounds, which is much more weight than the Auray broadcast arms can support. The Auray BA-XE4 Broadcast Arm with Integrated XLR Cable (B&H # AUBAXE4) and the BAE-2X Two-Section Broadcast Arm with External Springs & Integrated XLR Cable (B&H # AUBAE2X) can each support up to 3.5 pounds, while the Auray BAI-2N Two-Section Broadcast Arm with Internal Springs (B&H # AUBAI2N) and the BAI-2X Two-Section Broadcast Arm with Internal Springs and Integrated XLR Cable (B&H # AUBAI2X) can each support up to 5 pounds.