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Pentax SMC FA 645 45mm F2.8 Lens
Moderately Wide Angle Field of View
This wide-angle lens features super multi coating (SMC) and an equivalent focal length of 36mm, in the 35mm format. SMC is standard for all PENTAX lenses and describes seven microscopically thin layers of high quality coatings that are applied to the lens elements to reduce reflectance and increase transmittance. It significantly increases the amount of light transmitted by the lens.