Weather sealing user’s expectations

Started Feb 11, 2014 | Discussions thread
Zvonimir Tosic
OP Zvonimir Tosic Senior Member • Posts: 2,639
One swallow does not make a spring

Barry Pearson wrote:

Zvonimir Tosic wrote:



Pentax has two different WR designations:

a) WR, and

b) DA*.

WR lenses have limits as to what to expect from them. WR lenses cannot be used for a prolonged time in adverse weather. Instead of them, use DA* lenses, which were purpose-built for such use. DA* lenses have better seals overall.

In short:

  • Light rain (WR) — Prolonged use in rain (DA*)
  • Light snow (WR) – Prolonged use in snow (DA*)
  • Slightly dusty atmosphere (WR) – Prolonged use in dusty atmosphere (DA*)
  • Low temperatures use shortly (WR) — Prolonged low temperature use (DA*)

In their Lens and Accessories Catalogue , they describe AW - All Weather. This applies to all the DA* lenses plus the 560mm f/5.6.

Given the AW nature of the 560mm, which isn't a DA* lens, using "AW" is more accurate than using DA* as a designation.

How the actual future lineup of Pentax K-mount lenses will unfold, we know little. At present, only one lens in the K-mount is designated as AW, and that is DA560.

All other all-weather lenses available are currently labeled as DA*. Until that entire range changes its name, we can assume DA* is the current naming.

-- hide signature --

Madamina, il catalogo è questo; Delle belle che amò il padron mio; un catalogo egli è che ho fatt'io; Osservate, leggete con me.

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