Cinematography Tip: Control Window Light With ND Gels

first_imgImage via Lighting Grip Las Vegas.Attaching the GelA common practice is to attach the gel to the outside of the window to conceal its edges. If you decide to do so, it’s paramount to attach the gel firmly to avoid light leaks and prevent the sound of the wind rustling the gel.If attaching the gel to the outside of the window is not a viable option, you can temporarily bond the film to the window using a cleaning liquid like Windex. In the video tutorial below from Grip Tips, Dave Donaldson explains that it’s important to completely clean the window before placing the ND film, as you want to ensure that film and the window appear seamless.If you have several large-scale windows to diffuse (and a large enough budget), ND window panels are more efficient. These are solid gels that you affix to a window. However, since they come in specific sizes, you might run into problems with oddly sized windows.Image credit: Before the Door Pictures.There’s an incredibly creative story from the thriller Margin Call. In the scene above, the windows are 50” to 52” wide, while the ND panels were only 48.” John Paino, the production designer, created removable pilasters to hide the gaps.Once we installed the ND panels, we could take these pilasters and Velcro them against the window,” says DeMarco. “They not only hid the gaps, but they also looked great as vertical window dividers. As exterior lighting changed, particularly at the end of the day, it was a breeze for key grip Caswell Cooke and his crew to quickly change the panels.What are your thoughts on window light? Let us know in the comments. Take control of window lighting on your next shoot with ND filters.Top image via Shutterstock.Windows are light sources that can work wonders — if you use them correctly. They’re ideal for soft key lights when the camera faces away from them. However, when cameras face windows providing backlight, trouble can arise. Unless you have a large lighting unit that can match the window light, you’re either going to have to drop the subject into a silhouette or expose for the actor which will blow out the window light.There’s plenty of discussion on whether or not filmmakers should allow window lights to blow out. It’s a highly creative choice, and opinions will always differ. You might be surprised how many films and TV shows let window light clip. Take note next time you’re watching something.For those who favor controlling window light, you can do so with ND gels.ND Window GelsMuch like neutral density filters for your lens, ND window film reduces the intensity of window light. Window gels, like camera density filters, come in a variety of different strengths: .3, .6, .9, and 1.2. If you only have the budget to purchase one roll, you’re going to want at least 2-3 (0.6-0.9) stops of density filtration because sunlight is incredibly bright (around 98,000 lux). Several brands offer this gel; one of the most reputable is Rosco. However, at around $120 for a 7-meter roll, you can quickly burn through your budget.last_img read more

Fingers that change color

first_imgDefinitionFingers or toes may change color when they are exposed to cold temperatures or stress, or when there is a problem with their blood supply.Alternative NamesBlanching of the fingers; Fingers – pale; Toes that change color; Toes – paleCausesBuergers diseaseChilblains – painful inflammation of small blood vesselsCryoglobulinemiaFrostbiteNecrotizing vasculitisPeripheral artery diseaseRaynauds phenomenon – sudden change in the finger color ranges from pale to red to blueSclerodermaSystemic lupus erythematosusHome CareAvoid smoking.Avoid exposure to cold in any form. Wear mittens or gloves outdoors and when handling ice or frozen food. Avoid chilling, which may happen following any active recreational sport. Wear comfortable, roomy shoes and wool socks. When outside, always wear shoes.When to Contact a Medical ProfessionalCall your doctor for an appointment if:Your fingers change color and the cause is not knownFingers or toes turn black or the skin breaksWhat to Expect at Your Office VisitThe doctor will perform a physical examination, which will include close examination of the hands, arms, and fingers.The doctor will ask questions about your medical history and symptoms, including:Time patternDid the fingers or toes suddenly change color?Has the color change occurred before?Aggravating factorsDoes cold or emotion cause the fingers or toes to turn white or blue?Did this occur after you had anesthesia?Do you smoke?Other symptomsWhat other symptoms do you have? For example:Finger pain?Arm or leg pain?A change in the texture of the skin?Loss of hair on the arm or hands?Tests that may be done include:advertisementAntinuclear antibody blood testBlood differentialComplete blood count (CBC)Comprehensive metabolic panelDuplex Doppler ultrasound of the arteries to the extremitiesSerum cryoglobulinsSerum protein electrophoresisUrinalysisX-ray of the hands and feetTreatment depends on the underlying cause.ReferencesOlin JW. Other peripheral arterial diseases. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 80.Review Date:4/24/2013Reviewed By:David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.last_img read more