you are already estimating using the depth of field calculator in subject distance,
using the markings on the lens gives a reasonable estimate on the minimal distance where subjects start to appear in focus.
I.e. Its easier to estimate 3-5meters at the minimal then 15-25-100-200m to subject on the calculator right? unless we have our handy laser rangefinder with us.
using the markings on the lens gives a reasonable estimate on the minimal distance where subjects start to appear in focus.
I.e. Its easier to estimate 3-5meters at the minimal then 15-25-100-200m to subject on the calculator right? unless we have our handy laser rangefinder with us.
There is a lot of misconception about the concept of a hyperfocal rule. For the most part, these are based in the days of film, where most folks didn't enlarge beyond 8x10 (oh Americans...) and the general rule of thumb was "f/8 and be there" or "f/5.6 and 1/125s"
Truth is, we are constrained in a few ways.
- stopping down too much and diffraction kicks in. For the D800E, the diffraction limit if f/7.1. You may be able to wing f/8, but by f/11 and smaller it becomes readily visible. I wager that the very first images shared in this thread, shot at f/16 would be significantly sharper if taken at f/5.6. Also, the 14-24 suffers from focus shift problems, inherent in its lens design that actually kills off a third of detail across the central part of the frame going from f/2.8 to f/4.0
- performance at maximum aperture is usually less than ideal. This applies to pretty much all system, save the Leica M primes that are engineered to be as optically ideal as possible - hence you end up with $5000+ manual focus 50mm lenses and $7000+ manual focus 35/1.4 lenses. So some degree of stopping down is required. We are basically shut in between the need to stop down for increasing resolution and depth of field and not stopping down so far as to see the limiting effects of diffraction. Its a quandrary. F/11 will give you more depth of field, but also kill micro contrast across the frame.
- hyperfocal and even those depth of field markings on the older lenses were for the time of film. those equations need to be thoroughly reconsidered in an age where film grain no longer "hides" mistakes and it is easier to make "everything" look sharp on a 8x10 enlargement vis-a-vis a 36x24 photograph - whether film or digital. Large format folks are acutely aware of these things, hence the use of lens movements to optimize both depth of field and the ideal set aperture for their photography.
TLR - in short. don't count on hyperfocal focus for a very high resolution digital SLR. use a real depth of field calculator, being mindful of the limits of diffraction and the lens you are shooting with.