Here’s Why Helicopter Blades Can Look Strange On Video

Here is the Valid Answer.

If you’re a regular reader, you know that I am on the record with a deep belief that photography and filmmaking are not all about speeds and feeds or how big your megapixels are compared to mine. Nonetheless, I do have a healthy respect for the technical side of the craft — and for those who dive in deep.

Like the guy who made this video, for example.

This optical illusion is “purportedly” made possible by synching the camera shutter speed with the rotation of the helicopter’s blades, giving the latter the appearance of “staticity.” Some cry hoax. Others say it’s real. Those who believe it is real have engaged in lengthy debate about how it was achieved. The two sides’ arguments break down like this:

SS: “As the title of the video suggests, the filmmaker synched his shutter speed with the rotation of the helicopter blades to make it appear as it does.”

FR: “This is a matter of frame rate, not shutter speed. The frame rate has to be synched such that with each frame exposure the blades are in the exact same position.”

Since each frame has to ensure the blade is in the same position as the last it, therefore, needs to be in sync with the rpm of the rotor blades. Shutter speed then needs to be fast enough to freeze the blade without too much motion blur within each frame.

Here the rotor has five blades, now let’s say the rpm of the rotor is 300. That means, per rotation, a blade is in a specific spot on five counts. That gives us an effective rpm of 1500. 1500rpm / 60secs = 25.

Therefore shooting at 25fps will ensure the rotor blades are shot in the same position every frame. Each frame then has to be shot at a fast enough shutter speed to freeze the blade for minimal motion blur.

Courtesy : Chasejarvis , Petapixel

These are the Top 10 best US airlines of 2024

In an era where air travel plays an integral role in connecting people and places, the quality of airline service can significantly impact travelers’ experiences.

As we navigate the ever-changing landscape of aviation, insights into the performance and reliability of different carriers become invaluable. Enter WalletHub’s comprehensive analysis, offering a glimpse into the 10 best US airlines of 2024. Join us as we embark on a journey through the clouds, exploring the top performers.

Best airlines of 2024

Alaska Airlines (68.07 out of 100): Anchoring the list is Alaska Airlines, celebrated for its consistency and customer satisfaction. With a score of 68.07, Alaska Airlines sets the standard for excellence in the skies.
SkyWest Airlines (65.96): Following closely behind is SkyWest Airlines, recognized for its operational prowess and reliability. With a score of 65.96, SkyWest secures its position among the elite.
Spirit Airlines (65.69): Surging into third place is Spirit Airlines, renowned for its affordability and expansive route network. Despite its low-cost model, Spirit Airlines earns acclaim with a score of 65.69.
Delta Air Lines (61.56): A stalwart of the industry, Delta Air Lines maintains its reputation for superior service and efficiency. With a score of 61.56, Delta continues to soar above the competition.
United Airlines (51.96): United Airlines occupies the middle ground, offering a balance of convenience and comfort to travelers. With a score of 51.96, United remains a dependable choice for domestic and international flights.
JetBlue Airways (51.6): JetBlue Airways, known for its focus on customer experience and amenities, secures its place in the top 10 with a score of 51.6.
Hawaiian Airlines (48.3): Transporting passengers, Hawaiian Airlines earns accolades for its hospitality and island-inspired service. With a score of 48.3, Hawaiian Airlines embodies the spirit of aloha.
American Airlines (46.52): Despite facing challenges, American Airlines maintains its presence among the top performers with a score of 46.52, showcasing resilience in the competitive aviation landscape.
Frontier Airlines (43.57): Frontier Airlines offers budget-conscious travelers a gateway to the skies with its affordable fares and diverse destinations. With a score of 43.57, Frontier Airlines secures its place in the top 10.
Southwest Airlines (36.03): Rounding out the list is Southwest Airlines, renowned for its no-frills approach and extensive route network. With a score of 36.03, Southwest Airlines remains a popular choice for travelers seeking simplicity and value.