In this video we perform a vignette test with the Metabones Speed Booster XL .64x and the Sigma 18-35mm F/1.8 DC HSM ART Lens (Nikon F-mount). The vignette tests were conducted with the in body 5-Axis Stabilization turned on and off. The field of view becomes slightly narrower with the 5-Axis Stabilization turned on which helps to eliminate vignetting. When panning from side to side, the vignetting does become more pronounced. With the 5-Axis Stabilization turned off, the vignetting becomes much worse when panning from side to side.
Note: All video footage from the GH5 was filmed in Cinema 4k (4096x2160) 4:2:2 10Bit at 24 fps. The footage was left ungraded to preserve the vignetting results.
A zoom test is performed through the entire Sigma 18-35mm focal range. We found some vignetting around the edges at 18mm. Zooming in to 20mm, you see the vignetting begin to disappear. Continuing through 24-35mm the vignetting is virtually gone.
We also delve in to the crop factor on the Panasonic GH5 (2.0X) which differs from that of the Panasonic GH4 (2.3X). With the crop factor, focal length and speed booster factored in, the Sigma 18-35mm focal range becomes 23-44mm when used on GH5:
Finally, all video footage of the Panasonic GH5 body and screen was filmed with the Panasonic GH3 at Full HD. The HD footage was scaled up to 4K in Adobe Premiere.
If you have any questions or comments feel free to leave them below. We hope you enjoy the video!
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The follow is a list of the equipment covered in this video:
Metabones Speedbooster XL .64x (Nikon F-mount):
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Sigma 18-35mm f1.8 lens (Nikon F-mount):
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Panasonic Lumix GH5:
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