Keldan Spectrum Filters SF -4 B - 55mm to 82mm

Keldan Spectrum Filters SF -4 B - 55mm to 82mm

Regular price$365.00
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Tax included. Shipping calculated at checkout.

Size
  • Free NZ shipping over $250

Spectrum Filter SF -4 B with filter thread

The Spectrum Filter SF -4 B is designed to compensate for the light absorption of blue water and therefore provides a smooth, well balanced light spectrum to the sensor of your camera. This greatly improves the color rendering of your images and adjust the color coordinates close to daylight for outstanding results with manual white balance.

The Spectrum Filter SF -4 B has a compensation depth of 8m. At this depth the filter makes a perfect compensation of the light absorption of the water column. The camera then sees a daylight spectrum just like shooting at the surface.

The filter works best for blue water within a depth range of 6 to 20 meters. The filter has a damping equivalent to a loss of 4 stops. Normally low noise cameras that allow to shoot at ISO 1600 or higher are requried when using this filter.

IMPORTANT: If you experience problems wit too low light level switch to a lighter filter such as the SF -2 (loss equvalent to 2 stops). The use of a lighter filter is always the better option than using no filter at all!


SF -4 B Filter color coordinates

Sizes
Camera Lens Diameter Item Number
58 mm thread No. 1447
62 mm thread No. 1337
67 mm thread No. 1376
72 mm thread No. 1375
77 mm thread No. 1374
82 mm thread No. 1373

International Shipping

Yes, we ship to Australia! We use DHL Express, which should take 1-3 business days depending on your shipping address. Our checkout will automatically determine your shipping cost.

Outside of Australia? Contact us and we can organise.

You can find more information about shipping on our FAQs page.

How long will it take for my order to arrive after I make payment?

That depends on where you live and whether we have an item in stock or not. While we do have many items in stock, we don't carry everything. (For example, we do not stock most housings or ports as there are just too many!) If you need an item in a hurry, it's a good idea to contact us and find out if your item is in stock, or if we can get it in a hurry - we often can!

If we have it in stock, we can usually send it out as soon as we receive payment (1-3 business days), or you can pick it up. If an item is not in stock, we'll need to order it from our suppliers, which means it can take 1-2 weeks to arrive at your door (usually closer to a week).

Sometimes delivery can take longer, if our manufacturers are out of stock, for example, but this is unusual - we let customers know as soon as possible if something like this happens.

How do you ship my NZ orders?

We use New Zealand Post Courier to ship orders. New Zealand Post aims for next-day delivery nationwide between major towns and cities in the North Island. South Island delivery can take two days. If you require next-day delivery in South Island, choose the express shipping option for the South Island. If you spend over $250 get your shipping for free!

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