The Schneider 4x5.65" 4mm Violet 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 Violet 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 violet 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, green, blue, or pink banding instead of violet 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    Violet 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 violet-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. does this have fingerprint sensor?

A: No, it does not have a fingerprint sensor.

Q: 2. Is this phone unlocked?

A: The Sony XPERIA 1 IV 512GB 5G Smartphone is unlocked.

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 clear the grip (and fingers) on an E-M1 III?

A: No, a bit of crop in post is neccessary.

Q: 5. 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: 6. 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: 7. I saw in the mobilespecs 1x3.00 GHz Cortex-X2 , 3x2.50 GHz Cortex-A710 , 4x1.80 GHz Cortex-A510 is it correct ?

A: The specifications are correct as listed for the Sony XPERIA 1 IV 512GB 5G Smartphone (Black) BH #SOX1IV. Performance: Operating System Android 12 Memory 12 GB Processor Qualcomm Snapdragon8450 CPU Up to 3 GHz Cortex X2 Single-Core Up to 2.4 GHz Cortex A710 Triple-Core Up to 1.7 GHz Cortex A510 Quad-Core GPU Adreno 730 Storage Capacity 512 GB

Q: 8. I will use that lens on a Fujifilm x-T2. I understood that the resultant image will be fully or partially circular, with a black part alla around. I will use it for panoramic and get rid of the black part. What will be the megapixel size of the usable part (24mp minus the black) ? Thanks

A: When using the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for FUJIFILM X, your useable megapixel size will be about 30% less (approx 16 MP).

Q: 9. DOES IT WORK WITH THE TELCEL 5G NETWORK IN MEXICO?

A: The Sony XPERIA 1 IV 512GB 5G Smartphone (Violet), B&H # SOX1IVV, is unlocked and should work with most carriers but we could not guarantee it. You should confirm directly with your carrier, ultimately, they operate the network and are the only ones who can tell you with absolutely confidence whether the device supports 5G in your specific region or not.

Q: 10. Is it Single or Dual-SIM? Does it have an e-SIM? Thx

A: This phone will support the following, Single SIM (Nano-SIM or eSIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by.