About Dustproof, Water Resistance, And Simplified Weather Resistance - Pentax smc -DA Operating Manual

About dustproof, water resistance, and simplified weather resistance
• Dust-proof and water-resistant lenses
DA
*
55mm f/ 1.4 SDM, DA
*
300mm f/4ED [IF) SDM, DA
*
200mm f/2.8ED [IF] SDM,
DA
*
16-50mm f/2.8ED AL [IF] SDM, DA
*
50-135mm f/2.8ED [IF] SDM , DA
*
60-250mm
f/4ED [IF]SDM
These DA
*
lenses are dust-proof and water-resistant because each part is individually
sealed. This makes it difficult for dust and water to enter the lens.
• Lenses with simplified weather-resistant construction
DA 18-55mm f/3.5-5.6 AL WR , DA 50-200mm f/4-5.6ED WR
These lenses are made with a simplified weather-resistant construction by using DA
*
lens sealing technology which makes it difficult for water to enter the lens.