*Always conduct test shots to familiar with the product characteristic before you take an important shot. When using the S-2000 in S-TTL Auto mode for spotlight effect of this product, center spot metering mode on a camera is recommended since average metering mode or multi pattern metering mode could wash out the center of an image. In case S-TTL Auto mode does not provide appropriate exposure, use Manual mode.
*Make sure to cool down the "S-2000" according to instruction manual / [Compatible battery, operational limitation on flashing] leaflet provided with the S-2000, to prevent overheating / degradation of light emitting part / inner components. The light emitting part could have discoloration or burn when excessive repeated flashes are made. Should you observe any irregularity mentioned above, stop using the strobe immediately.
*"Slave D Holder Unit 3" of the "Optical D Slave Cable 3 Type L" is not compatible with this product.
*When you entry with this product being attached on a strobe, make sure to evacuate remaining air inside of the Rubber Hood before you get underwater.
*Always extend the "Rubber Hood 52" when using the "Snoot Tube 10" or "Snoot Tube 26" together to prevent possible damage on light emitting part and/or inner circuit of the S-2000 etc. since generated heat could stay close to the light emitting part.