Pentax have a protracted established and fantastic repute for backwards compatibility, and it’s a tribute to the finely designed Okay mount that even at this time it provides a exceptional diploma of performance with lenses going again to even the 1950s. The mount has repeatedly up to date, with the arrival of electronics and AF including contacts and levers to the combination, however nonetheless any Pentax Okay mount lens that has an “A” on the aperture ring will operate absolutely and usually, with none particular necessities or adapters. Earlier lenses will nonetheless operate, however manually and with restrictions.

The arrival of the Okay-1 full body DSLR, with its comparatively small vary of latest lenses, created an upsurge of curiosity in film-era Pentax lenses, which, clearly, are full body format. They provide a strategy to plug any gaps within the present lens vary, in addition to the potential to avoid wasting money by shopping for second hand. The vary of latest lenses has now expanded considerably, with extra to observe, however nonetheless, the SMC Pentax-FA 20-35mm f/Four AL offers us a low value, very compact lens that may be a very engaging proposition in opposition to for instance the a lot bigger and really costly new 15-30mm lens.

However is it any good on a contemporary DSLR? Let’s discover out.

Pentax SMC P-FA 20-35mm f/4.Zero AL Dealing with and Options

Smc Pentax Fa 20 35mm F4 On Pentax K 1

The lens was launched in 1998 and stayed in manufacturing for round 6 years, so though not overly widespread, it’s under no circumstances uncommon and good examples can nonetheless be discovered. The primary impression is that it’s a very completely different beast to the brand new lenses. It’s tiny by comparability, very gentle at 245g and makes a fantastic companion to the total body 36MP Pentax Okay-1 or Okay-1 II. We’re utilizing the unique Okay-1 for this evaluation.

Beginning on the entrance of the lens, there’s a very substantial plastic petal lens hood. This bayonets on cleanly and positively and there’s no threat of it turning into free unintentionally. Throughout the bayonet match is an ordinary 58mm filter thread. Behind it is a skinny rubberised guide focusing ring. This isn’t lively throughout AF and actually rotates throughout focusing, so fingers ought to be refrained from it when utilizing AF. Luckily its place could be very nicely thought out and there ought to be no tendency to interrupt its rotation. To make use of MF, this ought to be set on the digicam after which the focusing ring is free to maneuver manually. It’s fairly gentle in operation, however constructive sufficient. The space scale is located behind a transparent window and clearly marked in ft and metres. Focusing is all the way down to 0.3m or 1 foot, a most magnification of 0.16x or 1:6.3. That is about what could be anticipated and shut sufficient for many makes use of. There are IR focus correction marks for each 20mm and 35mm.

The zoom ring is easy and light-weight in operation and poses no difficulties. Lastly, the aperture ring has a click on cease for the “A” setting, however can be set manually from f/Four to f/22. We at the moment are so used to utilizing the digicam to set the aperture that it appears simpler to take action than to make use of the aperture ring. Each methods can be utilized as desired.

Smc Pentax Fa 20 35mm F4 On Pentax K 1 With Hood

There’s a nicely made stainless-steel mount, with the suitable contacts for metering and different show data. This lens makes use of the screw drive system for AF, so though it’s quick and correct additionally it is barely extra noisy than present SDM and DC motor inbuilt focusing techniques.

Optical development in 10 parts in eight teams, with 1 glass moulded and 1 hybrid aspherical parts. It’s a floating factor design, so when zooming parts transfer in several methods in relation to one another, with the intention of sustaining shut up efficiency. The diaphragm has eight blades to enhance bokeh by producing a extra rounded aperture. Along with the SMC (Tremendous-Multi-Coating) the entrance factor has a Ghostless Coating to scale back or take away flare.

It’s an incredible lens to make use of, really easy to focus, responsive, and the sunshine, compact development is such a reduction in comparison with all the massive, heavy lenses that we at the moment are being offered with. Nevertheless, new lenses are as they’re for a motive, so we have to look fastidiously at efficiency to see if that compactness carries with it some drawback.

Smc Pentax Fa 20 35mm F4 Rear Oblique View

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