|
Post by account_disabled on Feb 1, 2024 1:26:50 GMT -5
Many digital cameras have an optical low-pass filter (OLPF) in front of the image sensor to blur some of the finer details before they reach the sensor. Although image softening may seem passive, OLPF helps to avoid a very ugly digital artifact known as moiré. Cinematographer Dan Hopkins has been shooting with a Panasonic Lumix full-frame mirrorless camera for years, and until recently mainly shot with the S1H, which has an OLPF. However, Hopkins Fax Lists added the excellent S5 IIX to its arsenal last year, a camera that does not have an OLPF. Since using the S5 IIX, he has come up with some awesome moiré artefacts, primarily in woven fabrics at weddings. While moire is also a problem for photography, it's exponentially more difficult to deal with in video, if not downright impossible in some cases. On the advice of a friend, Hopkins contacted Kolari, a company known for converting infrared cameras, filters, and now even. sun to see if the company can help by adding OLPF to the S5 IIX. After six months of development and some back-and-forth with Hopkins, Kolari developed an OLPF upgrade kit for full-frame Lumix cameras that does an excellent job of preventing moiré at the source - the image sensor. Conversion of Kolari OLPF Panasonic Lumix S5 IIX This additional filter comes with some drawbacks, including a slightly softer image and a shift in white balance. However, for videographers like Hopkins, these trade-offs are necessary to avoid the significant time reduction involved in trying to correct moire in post.
|
|