Vixen Astronomical Telescope Accessory SPD Reducer 0.8x 26203-8

---------------------------------------------------------------------- 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.

Kindly confirm these details before placing your order. ---------------------------------------------------------------------- [Reducer for SDP65SS] This is a dedicated reducer for the SDP65SS lens barrel. It shortens the focal length by approximately 0.8 times and changes the F value from 5.5 to 4.4. Image circle φ30mm (covers APS-C. 90% or more light intensity at the outer edge). Even with a full-frame outermost φ44mm, it maintains 70% light intensity while minimizing star image distortion. [Round star image with well-balanced correction] Even with the FL55SS lens barrel + reducer HD for FL55SS kit, which is well-received for its photographic performance, the peripheral image becomes slightly distorted when magnified to 100 μm in the spot diagram. You can see that the SDP65SS lens barrel corrects the star in a well-balanced manner, resulting in a well-rounded star image. [Supports shooting with a wider field of view! ] Shorten the focal length of the SDP65SS lens barrel by approximately 0.8 times, and change the F value from 5.5 to 4.4. Image circle φ30mm (covers APS-C. 90% or more of brightness at the edges). Even with a full-size lens with a diameter of 44mm at the outermost periphery, 70% of the light intensity is ensured while minimizing distortion of the star image. Image circle: Φ30mm Lens configuration: 2 groups, 2 elements