Rear Curtain Sync

Creating a Natural-looking Stream of Light

Normally in flash synchronization, the Speedlight fires at the beginning of the exposure. When the shutter speed is slow, the result is a streaking light pattern in front of the subject.

When Rear-Curtain Sync is set, the Speedlight fires at the end of the exposure, turning available light into a stream of light that follows the flash-illuminated moving subject.

Since Rear-Curtain Sync is especially effective at a slow shutter speed, Slow Sync is automatically set at the same time that Rear-Curtain Sync is set in Programmed Auto or Aperture-Priority Auto Exposure mode. To set a specific shutter speed, set your camera to Manual Exposure mode.

Manual Exposure mode (M) is recommended with Rear-Curtain Sync.

Aperture-Priority (A) or Programmed (P) Auto Exposure modes can also be used. In these modes, the camera automatically chooses the proper f-stop and shutter speed. Confirm the shutter speed. If it is too slow, use Manual (M) Exposure mode.

Shutter-Priority Auto (S) Exposure mode is not recommended because the f-stop goes out of range for Auto Aperture mode in dark scene conditions.

Rear-Curtain Sync with slow shutter speed

Front-Curtain Sync with slow shutter speed

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Flash

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Kodak DCS 700 manual Rear Curtain Sync, Creating a Natural-looking Stream of Light

DCS 700 specifications

The Kodak DCS 700 series, introduced in 1996, marked a significant milestone in the evolution of digital photography. Targeted at professional photographers, this groundbreaking camera system was one of the first digital single-lens reflex (DSLR) cameras to deliver high-quality images comparable to traditional film cameras.

One of the standout features of the Kodak DCS 700 series was its remarkable resolution for the time. It boasted a 6.2-megapixel sensor, allowing photographers to capture images with stunning clarity and detail. This high resolution was ideal for various applications, from commercial photography to scientific imaging. The DCS 700 utilized a charged-coupled device (CCD) sensor, which was known for its excellent light sensitivity and image quality, especially in low-light conditions.

The DCS 700 was designed with a robust construction, resembling traditional film cameras, which made it more comfortable for professionals accustomed to using film. It featured a familiar layout, including a mirror reflex mechanism that allowed photographers to view exactly what the lens was capturing. This design ensured that transitioning to digital photography felt natural for many users.

Another key feature of the DCS 700 series was its ability to shoot in RAW format, enabling photographers to store images with minimal compression. This capability provided greater flexibility in post-processing, allowing for adjustments in exposure, color balance, and other critical aspects without losing image quality. Additionally, the camera came equipped with an advanced metering system to accurately gauge exposure, ensuring well-balanced images even in challenging lighting situations.

The Kodak DCS 700 series also came with integrated connectivity options, allowing users to transfer images directly to computers for quick editing and sharing. This feature was particularly appealing for professionals in fast-paced environments, where speed and efficiency were paramount.

Battery life was another significant aspect, as the DCS 700 series utilized rechargeable batteries that offered extended shooting sessions, a crucial feature for those covering events or long assignments.

While the DCS 700 series might be considered outdated by today’s standards, it laid the groundwork for future DSLR innovations and is remembered as a pivotal development in the transition from film to digital photography. As a testament to its impact, many professionals still reflect on the DCS 700 series as a reliable tool in their early digital photography endeavors, showcasing Kodak's commitment to advancing imaging technologies.