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regarding the DA 20-40mm Limited
Quote: Description:
The HD Pentax-DA 20-40mm F2.8-4 Limited DC WR is the first zoom lens to join the Pentax lineup of ultra-compact "limited" lenses. This lens features a sleek all-metal barrel manufactured to very high standards.
This is also the first Limited series lens to feature silent DC autofocus as well as a weather-sealed design. Like the other HD Limited lenses, this lens features Pentax's latest lens coating promising less ghosting and flare.
As is standard for all premium Pentax lenses, this lens allows for full-time manual focus adjustments (Quick shift) and it is treated with Pentax's Super Protect coating to protect the front element from dust and scratches
The lens covers a wide-angle to normal focal length range, and is compatible with Pentax APS-C DSLRs. It will be available in both black and silver in December, 2013 for $999.
Read more at:
HD Pentax-DA 20-40mm F2.8-4 Limited DC WR Reviews - DA Zoom Lenses - Pentax Lens Reviews & Lens Database
it is the only zoom Limited, but it can cause the same problem as any other
a desire to get more Limited lenses
and it is designed for with your digital camera ******
on the other hand, any of the 3 FA limiteds, 31mm, 43mm or 77mm, would work with both film and digital cameras:
Quote: About the SMC Pentax-FA Lens Series
SMC Pentax-FA lenses have fixed focal lengths and can be used with both Film and Digital Pentax SLRs. They cover the full-frame 24x36mm image circle.
Auto-focus
Auto-aperture (aperture ring available)
Select lenses feature Power Zoom
Film & Digital
Read more at:
Pentax FA Prime Lenses - Reviews and Specifications - SLR and Interchangeable Lenses - Pentax Lens Reviews & Lens Database
enjoy your photography
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Quote: Full Frame Coverage of DA Lenses: Comprehensive Test
Which DA lenses cover the full 24x36 mm frame?
By PF Staff in Gear Guides on Jan 7, 2019
Read more at:
Full Frame Coverage of DA Lenses: Comprehensive Test - Gear Guides | PentaxForums.com