What is the Filter Thread Size of Pentax DA 20-40mm F2.8-4 ED DC WR?

What is the Minimum Focus Distance of HD Pentax-DA 20-40mm F2.8-4 ED Limited DC WR

Below are links to the filters that we recommend you to consider for your Pentax DA 20-40mm F2.8-4 ED DC WR:

HD Pentax-DA 20-40mm F2.8-4 ED Limited DC WR Alternatives in Pentax KAF3 Mount

	Coverage	Weight	Focusing	Street Price
Pentax smc DA 17-70mm F4.0 AL IF SDM Compare	APS-C / DX	485gr	AF	Amazon B&H Photo
Pentax smc DA 55mm F1.4 SDM Compare	APS-C / DX	375gr	AF	Amazon B&H Photo
Sigma 17-50mm F2.8 EX DC OS HSM Compare	APS-C / DX	565gr	AF	Amazon B&H Photo
Sigma 50mm F1.4 EX DG HSM Compare	35mm FF	505gr	AF	Amazon B&H Photo
Sigma 17-70mm F2.8-4 DC MACRO OS HSM C Compare	APS-C / DX	465gr	AF	Amazon B&H Photo
Sigma 18-50mm F2.8-4.5 DC OS HSM Compare	APS-C / DX	395gr	AF	Amazon B&H Photo
Sigma 17-70mm F2.8-4 DC Macro OS HSM Compare	APS-C / DX	520gr	AF	Amazon B&H Photo
Sigma 24-70mm F2.8 EX DG HSM Compare	35mm FF	790gr	AF	Amazon B&H Photo

Other Frequently Asked Questions about HD Pentax-DA 20-40mm F2.8-4 ED Limited DC WR