Main concept
Condensation is the biggest enemy in astrophotography. The usual countermeasure is to use a lens heater. However, when using lens filters, the filters exposed to the air also need to be heated. Since a lens heater warms indirectly from the outside of the lens, it is difficult to sufficiently heat the center of the filter.
The "Anti-Fog" series solves this problem by generating heat directly within the filter itself, enabling rapid heating all the way to the center.
Anti-Fog PROSOFTON Clear is a soft filter making bright stars glow to emphasize constellations.
The PROSOFTON Clear effect is about half the strength of the Pro Softon [A].
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Usage Instructions
- Use a commercially available mobile battery (5V) and USB cable (Type-A to Type-C).*
- Compatible with slide-type filter holders designed for 100mm-wide, 2mm-thick filters. The Cokin NX system can be used with the NX filter frame for 100×150mm filters.
* Mobile battery and USB cable are not included.
Product Specifications
| Heater Type | Thin-film heater |
|---|---|
| Temperature Characteristics | Ambient temperature +8°C (at 20°C) |
| Power Supply / Power Consumption | USB power 1.5W (5V–0.3A) |
| Input Port | USB Type-C |
| Estimated Operating Time |
Approx. 19 hours (at 20°C*) *Depends on ambient temperature, usage environment, battery condition, and characteristics |
| Substrate | Polished optical glass |
| Dimensions | 100x150mm |
| Thickness | Glass only: 2mm / Connector section: approx. 7.5mm |
| Weight | Approx. 76g |
| Accessories | Soft case |
