The GAM GCA1543 Full CTO Orange Cine Filter Sheet(color temperature orange) filters from GAM GCA1543 Full CTO Orange Cine Filter Sheethelp you achieve proper color balance when using strobes or HMIs under incandescent lighting conditions. These filters will help lower the color temperature to match tungsten-balanced (3200K) light sources.

CTOs are available in various "steps", each one a different temperature rating. As individual incandescent lamps vary in color temperature and with their operating voltage, CTOs are used to "tweak" the balance between the ambient light and the light source being employed to make the image (strobe, etc).

CTOs are available in six steps: 1/8, 1/4, 1/2, 3/4, Full and Extra

Because it is deep dyed, the color will not scratch off the surface and is optically clear

The clear polyester base is highly resistant to tears, punctures, cracking, and deterioration in high heat applications

The dyes used to produce GamColor are the most stable and heat resistant available

The chemical process ensures that the colors will be clean and clear with excellent transmission and consistency

GamColor quality control includes constant monitoring, from raw material to finished product.

Related Questions and Answers

Q: 1. I saw that this is also sold with a 1" core. What size of core is this one?

A: A 1" core is also used for this filter roll.

Q: 2. Can this filter be used with a Hasselblad Zeiss 150 mm f4 lens?

A: Our research shows that the Zeiss 150mm F/4, which is a vintage lens, has a 52mm filter thread. This filter will not work. Heliopan does offer this same filter with a 52mm Thread, it is B&H # HE2252. https://bhpho.to/2DcH23B

Q: 3. What is the Wratten equilvant for this Leica GREEN filter? (it is NOT #21)

A: The Leica E39 Green Filter is similar to a Wratten #40 green filter.

Q: 4. Hello! I am trying to take my 3000 K landscape light to a more warmer light like a 2700-2,500 K, like a regular halogen color. What would the 1/8. 1/4 and 1/3 get my Kelvin to? I bought the 223 1/8 but that didn't do much. Thank you!!

A: Full CTO will move the color temp from 5,600k to 2800k. 3/4 will do 5,600k to 3,200k. Smaller levels will do proportionally less.

Q: 5. How can you get it fit to a studio strobe with a 7 Bowens reflector for lower the light?

A: You may use the Interfit 4 Leaf Barndoor Set for Interfit Flash Heads - Includes Filter Holder B&H # INBD, which has a built in filter holder. You would have to cut the filter to fit the holder. Please see the image below.

Q: 6. Can I just tape the gel on with gaffers tape

A: The Light & Motion 82mm Glass CTO Set for Reflex Stella Pro and Reflex S Lights (Full, 1/2, 1/4 ) is designed to be placed in barndoors.

Q: 7. What's the difference between this time and B&H#LE204R1 ? Are they the same item?

A: LE204R1 is a 1" core. This one has a standard sized core.

Q: 8. what is the filter faction of this filter? Is there any exposure adjustment I should care before shooting?

A: the filter factor of this would be 3, so you must increase by 1 2/3 of a stop roughly.

Q: 9. Do these work with Aputure barndoor system for 120dII and 300dII?

A: Unfortunately, this OCF II Gel in the Quarter CTO can only work with the Profoto OCF system.

Q: 10. What is the filter ring made out of?

A: The Leica E49 Orange Filter ring is brass.