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Pentax 645 Lens Overview
These lenses are designed specifically for Pentax's line of medium format cameras. They can be adapted onto K-mount DSLRs via an adapter, but this is typically not convenient as 645 lenses are much larger physically than a corresponding K-Mount lenses.

Series overview:
-"A" lenses are manual focus (1980's)
-"FA" lenses are autofocus (1990's)
-"DA" and "DFA" lenses are optimized for digital and most feature silent autofocus and weather sealing.

The lenses in this category are all zoom lenses. You'll notice that no lens offers more than 2x zoom; this is for two reasons: to keep the size relatively compact, and to maintain good image quality.

Pentax Lens Review Database » Pentax 645 Medium Format Lenses » 645 Zoom Lenses
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  Lenses Rating Average Price User Reviews
pentax_28-45mm_nohood.jpg
HD Pentax-DA 645 28-45mm F4.5 ED AW SR
Supersonic AutofocusWeather SealedInternal FocusingAutomatic ApertureMedium-Format SupportAdapter needed for DSLRs
9.00 $4,524
Buy Lens
5 reviews
smc_Pentax-FA_645_33-55_4_5.jpg
SMC Pentax-FA 645 33-55mm F4.5 AL
Screwdrive AutofocusAperture RingAutomatic ApertureMedium-Format SupportAdapter needed for DSLRs
6.00 N/A
Buy Lens
1 reviews
smc_Pentax-FA_645_45-85_F4_5_070106_55k_es80s2s0x800.jpg
SMC Pentax-FA 645 45-85mm F4.5
Screwdrive AutofocusAperture RingAutomatic ApertureMedium-Format SupportAdapter needed for DSLRs
9.33 $747
Buy Lens
9 reviews
smc_pentax-A_645_45-85_4_5.jpg
SMC Pentax-A 645 45-85mm F4.5
Manual FocusAperture RingAutomatic ApertureMedium-Format SupportAdapter needed for DSLRsDiscontinued
9.00 $275 1 reviews
smc_pentax-FA_645_55-110_5_6.jpg
SMC Pentax-FA 645 55-110mm F5.6
Screwdrive AutofocusAperture RingAutomatic ApertureMedium-Format SupportAdapter needed for DSLRs
7.00 $1,200
Buy Lens
1 reviews
SMC_Pentax-FA_645_80-160mm.jpg
SMC Pentax-FA 645 80-160mm F4.5
Screwdrive AutofocusAperture RingAutomatic ApertureMedium-Format SupportAdapter needed for DSLRs
9.60 $472
Buy Lens
5 reviews
smc_Pentax-A_645_80-160_4_5.jpg
SMC Pentax-A 645 80-160mm F4.5
Manual FocusAperture RingAutomatic ApertureMedium-Format SupportAdapter needed for DSLRsDiscontinued
9.00 $159 4 reviews
smc_Pentax-FA_645_150-300_4_5.jpg
SMC Pentax-FA 645 150-300mm F5.6 ED [IF]
Screwdrive AutofocusInternal FocusingAperture RingAutomatic ApertureMedium-Format SupportAdapter needed for DSLRs
5.67 $2,350
Buy Lens
3 reviews



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