The second method to caption long exposures uses a feature available inside the Moment Pro app. Click on the camera icon to reveal the different capture modes, and choose "slow shutter." By default, it is set to "light trails". Switch to "motion blur" and choose a speed setting (0.5 - 1 - 2 - 4 - 8 - 15 - 30 - Bulb.) These settings mimic the shutter speed you would set on a DSLR; the longer, the more motion blur it will capture — experience with different speed settings to create desired effects. If you choose bulb mode, you manually decide when to stop the capturing process by pressing the shutter.
Although not required, you'll get better results when using a tripod.
Keep your iso at the lowest available for sharper images. In low-light situations, you can decrease your shutter speed (independent of the motion blur settings). In bright conditions, you can use your VND filters also to keep your shutter speed at a slow value.
Are you shooting water? Try a polarizer filter (CPL). It will cut the reflections and allow you to see what's below the water while rendering the colors punchier and the overall image more dramatic.
Try this mode with Moment lenses. I particularly like the Anamorphic lens to capture more expansive photographs. Plus, in the Moment App, you can set it to an Anamorphic lens to see exactly how it will look, and the de-squeeze will be automatically baked inside your image, so there is no need for Photoshop!
Pros of Using the Moment Built-In Slow Shutter Feature:
- It can replicate the effects of shutter speeds slower than 1 second and doesn't require any filter.
- Easy to use
- You only need a tripod or surface to keep your iPhone steady.
Cons of Using the Moment Built-In Slow Shutter Feature:
- Motion blur is software-generated
- You cannot shoot in RAW, so you'll have less flexibility in post-production.