The 81C Filter from Heliopan controls the bluish coloration that affects daylight film. This is a strong salmon colored filter that can bring skin tones back to a respectable tone when the light changes during the day. It is especially useful under cloudy or open shade conditions since as the light changes, so does the color temperature. An 81C will decrease the color temperature by approximately 100 degrees Kelvin more than an 81B. 

It's Autumn. The clouds are low hanging and the sky is "patchy blue". You've gone for a ride upstate to the mountains and the light in open shade is bluish. A photo taken of your girlfriend with daylight balanced film leaning against the side of a barn will yield bluish tones that she might not find particularly flattering. If the sky is significantly cloudy, an 81C filter will bring her skin tones back to a more appealing level than, perhaps, an 81B. The cloudier the day, the warmer the filter you require to eliminate the blue tint often found on such days. An 81C can also be used with electronic flash to reduce the amount of "blue" generated by the flash. An 81C is a strong filter that can also be used to make a warm scene even warmer such as a beach shot where you wish to enhance the overall sense of temperature. 

The filter ring is made from brass yielding a stronger product. Brass filter rings are also less prone to jamming. In addition, the seal between the glass and filter ring is exceptionally strong giving the filter added strength and durability.  

The reputation of Schott glass is world renowned. The high production standards combined with a sturdy brass filter ring make this filter hard to beat. It has a "heft" that is impressive. It may feel heavier but the benefit is in the construction and results. Not only is the glass exceptional but so is the seal between the ring and glass. Schott Glass used in the manufacture of this filter is legendary and synonymous with the highest standards of filter production.

Warmer Than An 81B    Balances Out Skin Tones in Open Shade    Removes Bluish Tone From Strobes    Durable Brass Slimmer Filter Ring    Retains Front Threads    Standard Heliopan Hard Coating    High-Quality Schott Glass

Heliopan filters are "dyed in the mass" and ground, polished and coated to the highest standards of the German optical industry

Heliopan Lichtfilter-Technik of Munich, Germany, has changed their black anodized brass filter rings on most Heliopan non-rotating filters to their "slim" mounts. These slim mounts are made of black anodized brass stock and have so little rim in front of the lens (5.4mm) that they will not vignette with lenses as short as 21mm

Heliopan Lichtfilter-Technik of Munich, Germany has been a leader in the filter industry since 1949. They are known for their high quality and production standards. Their slim mounts facilitate using them with wider angle lenses. Heliopan offers most of their filters with either their standard hard coating or with their industry leading SH-PMC 16 layer multi-coating that transmits over 99.5% of the light striking it on to the image plane for the lowest flare and greatest color saturation

Related Questions and Answers

Q: 1. Do these come with batteries?

A: It doesn't comes batteries and barn door. It just comes with a long soft case for the whole kit.

Q: 2. Does this light have a flash shooting or is it just continuous?

A: The Aputure LS 600x Pro Bi-Color LED Monolight (V-Mount) is a continuous light.

Q: 3. How does the power button work on bi-color and daylight models? Like a click button or like an actual switch?

A: The power supply included with the Aputure LS 600X Pro Lamp Head would have a push button for power.

Q: 4. What is the beam angle of this fixture?

A: The LS 600x pro offers a beam angle of light at 105° unmodified.

Q: 5. This monitor does 10-bit color over DisplayPort (not HDMI). What color depth is supported using DP ALT over USB?

A: The ASUS ProArt Display OLED PA27DCE-K 26.9" 4K HDR Monitor with Color Calibrator, B&H # ASPA27DCEK, supports 10 bit color over HDMI 2.0, Displayport 1.4 or USB C.

Q: 6. Does the 600x work with the spotlight attachment for Leko-like performance?

A: Yes, the Aputure Spotlight Mount Set with 19° Lens, B&H # APSL19SET, the Aputure Spotlight Mount Set with 26° Lens, B&H # APSL26SET, and the Aputure Spotlight Mount Set with 36° Lens, B&H # APSL36SET, would all be compatible for use on the Aputure LS 600x Pro Lamp Head (Gold Mount).

Q: 7. Is this a True 10-bit monitor?

A: The ASUS ProArt Display OLED PA27DCE-K 26.9" 4K HDR Monitor with Color Calibrator (BH #ASPA27DCEK) is a true 10-bit monitor.

Q: 8. Is this wireless?

A: When you purchase the remote B&H # GEMLLSR it becomes wireless.

Q: 9. Do the stands fit in the case? (Does everything you get come in that case?)

A: Yes. The entire kit fits into the hard case. // Also, if there are any other technical or product related questions, feel free to contact us directly at any time at support@dracobroadcast.com.

Q: 10. Is there any products to mount a parabolic umbrella to this light?

A: Yes. please review the following light shaping tools https://bhpho.to/3rdvOpq