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Forum: Troubleshooting and Beginner Help
06-27-2018, 12:26 PM
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This concept originated way back when cameras did not yet have built-in meters for light reading. And most camera owners did not have an outboard light meter to use. It was a setting to get good results under static circumstances just to get a good picture of a well-lit daylight scene, and go from there. Print film also has a very wide range of exposure latitude.
But time has passed, and photographic equipment has advanced tremendously. Now one has the capability to meter for higher shutter speeds to stop action, slow shutter speeds to show movement, wider apertures to blur background to varying degrees, and such adjustments can be made near-instantly on the fly. Especially with Pentax. Modern camera also have very advanced metering systems. So these days one has far more capability to address the circumstances being faced, and the goals of the shoot.
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Forum: Troubleshooting and Beginner Help
06-27-2018, 10:47 AM
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Welcome to the forum, and I think you'll agree, you're getting some excellent info here to supplement that in your book, or modify it. Your D-FA 28-105mm is not a "fast" wide-aperture lens, just average in aperture range. However, it has been shown to be an excellent performer, even fine wide open. Another upside is that its size and weight are far lower and more manageable than carrying an f/2.8 zoom lens would be. And, as photoptimist said, the higher ISO excellent performance of the K-1 allows an f/4 setting to get you what it takes f/2.8 to get on a lesser camera. That said, if your photography requires the fastest shutter speed you can get, or the lowest depth-of-field, etc. that only a high-quality faster lens can provide, then there is no substitute. This is why many of us have both lens types. We take what we need for the job we are doing.
Having a wealth of info is great, but getting out and taking photos will gain you much in advancement. And, unlike film, with digital you can shoot away and experiment without extra cost!
---------- Post added 06-27-18 at 10:59 AM ----------
I highly recommend that instead of considering the DA 18-55mm kit lens, go the extra effort and obtain the DA 18-135mm WR. Far better build, WR construction, far better zoom range, much better handling, and far better quiet, fast, accurate AF, not to mention better image capability. It would be a perfect zoom lens in line with your statements regarding what you look for in your images. From about 18-70mm its overall image quality is very good to excellent, and its aperture can keep to f/3.5-4.5, while beyond 70mm, the edge of frame performance softens some, while the central area remains very sharp, and is excellent throughout its zoom range and apertures.
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