The 242 Fluorescent 4300 Kelvin Filter from LEE Filters can be applied over a tungsten light fixture to convert its output to 4300K fluorescent. This filter is constructed from polyester that is heat resistant to 356°F and is delivered as a 48" x 25' roll on a 1" core.

Under 3200K tungsten light, the 242 Fluorescent 4300 Kelvin Filter exhibits a 0.41 density and transmits light at 39.3%. Under 6774K Source C light, this filter exhibits a 0.43 density and transmits light at 37.3%.

Tungsten to 4300K Fluorescent Light    0.41 Density for 3200K Tungsten    39.3% Light Transmission for 3200K    0.43 Density for 6774K Source C    37.3% Light Transmission for 6774K    Heat Resistant to 356°F    Polyester Construction

Related Questions and Answers

Q: 1. Is there any information available on transmittance/absorption as a function of wavelength for this product? I would like to know how it affects CRI and CCT.

A: Since the Cinefoil is opaque and is intended for use as a masking product, the transmission would be zero. While Rosco lists the transmission/absorption on their site, it would be limited to color filters only.

Q: 2. Will this fit on a Sigma 20mm Art lens for Nikon?

A: I'm sorry, no, the lens has no filter threads. You will need to get a filter system specifically for this lens. Click the link below to view; https://bhpho.to/38uBbFp

Q: 3. What is 720 Durham Daylight Frost used for?

A: That cools the color temperature of tungsten while softening as well.

Q: 4. Will this fit on my Sigma 24-70 lens?

A: Yes, the Lee 100 Landscape Kit will fit a Sigma 24-70mm f/2.8 Lens by adding the LEE Filters 82mm Wide-Angle Lens Adapter Ring for 100mm System Filter Holder, BH # LEARWA82. https://bhpho.to/3CVvrG1

Q: 5. Does it comes in pairs?

A: Correct. This is a pair of replacement fasteners.

Q: 6. Are these heat resistant?

A: They are heat resistant to some extent. However, it's recommended to allow for at least 2-3 inches of air space between the gel and the light.

Q: 7. Will this fit on a Nikon 24mm f/1.8G wide angle lens?

A: Yes, it will, but with the LEE100 kit you'll need to buy the appropriate lens adapter ring for your lenses (it's not included). The one you need for the Nikon 24mm f/1.8G ED lens is the Lee 72mm wide-angle lens adapter: https://bhpho.to/3C7bETu

Q: 8. What is the filter factor for this filter??? Is any adjustment in exposure required?

A: Lee says there is no filter factor for the Elements Circular Polarizer Filter (72mm). But this filter will block 1 stop of light at the maximum density setting.

Q: 9. Can the adapter rings for LEE85 system be used with the LEE Seven5 system (already expired) ?

A: Unfortunately no, the Lee Seven5 holder will not fit the 85mm adapter.

Q: 10. Is the padding inside the same as what is in the case that comes with the big stopper?

A: Yes it is.