ExpoImaging ExpoAperture2 Depth-of-Field Guide (2-Disc Kit - Metric)

ExpoImaging ExpoAperture2 Depth-of-Field Guide (2-Disc Kit - Metric)

ExpoImaging ExpoAperture2 Depth-of-Field Guide (2-Disc Kit - Metric)


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ExpoImaging EXPOA02NTM overview

  • 1Description

Depth-of-field (DOF) is more than a button on the front of a camera; it is a complex mathematical system that interweaves focal length, focusing distance, and aperture. Many modern SLR/DSLR lenses no longer have complete or accurate DOF markings. So to aid photographers, this ExpoImaging ExpoAperture² Depth-of-Field Guide gives shooters a full scale that can effectively be read with a single glance.

To use the guide, one needs to select the sensor/film size—anywhere from a 2x digital crop factor to 6x6 cm film—then a focal length ranging from 15mm to 135mm. The scale will compensate for the varying film/sensor sizes in relation to the selected aperture. When the parameters are chosen, the guide returns a range of apertures and the corresponding areas that will be rendered in focus for each f-stop.

The ExpoAperture² is compact, and easily finds its home in just about any camera bag or pocket. This ExpoAperture² also includes a CD-ROM with an instruction manual, a printed quick-start guide, a storage pouch and a sensor/film format reference chart.

This version of the ExpoAperture² is a two disc kit that includes a standard guide for 15-135mm lenses, and a second disc for telephoto focal lengths from 70-600mm. All measurements are in metric units.

Assert better creative control over depth-of-field
Quickly determine aperture setting, depth of field result, or hyperfocal distance
Develop an intuitive understanding of depth-of-field relationships with continued use
Fast and easy to use
Compensates for a wide variety of sensor formats and film sizes
UPC: 751751001203
In the Box
ExpoImaging ExpoAperture2 Depth-of-Field Guide (2-Disc Kit - Metric)
  • CD-ROM Instructional Manual
  • Quick Start Guide
  • Sensor Format Reference Chart
  • Storage Pouch
  • Table of Contents
    • 1Description

    ExpoImaging EXPOA02NTM specs

    Packaging Info
    Package Weight 0.25 lb
    Box Dimensions (LxWxH) 9.5 x 5.25 x 0.2"

    ExpoImaging EXPOA02NTM reviews

    ExpoAperture2 Depth-of-Field Guide (2-Disc Kit - Metric) is rated 3.5 out of 5 by 2.
    Rated 4 out of 5 by from Interesting, Useful Tool This product performs four useful functions regarding depth of field and selective focusing: 1. Determines appropriate aperture and distance for desired DOF. 2. Gives appropriate DOF for given aperture and distance. 3. Gives accurate hyperfocal distance for all f/stops on any given lenes and focal factor (film or digital). 4. Gives DOF for closeup photography. Great because it is easy to use once one gets the hang of it and a great learning tool, as it does as advertised in a general sense. Needs improvement regarding it's precision in measurement indications on the dial.
    Date published: 2008-04-09
    Rated 3 out of 5 by from Needs care, is not very pricise At first glance it looks nice, but after some time I find that it is not as convenient as it could be. You need to pay attention when you rotate it, because it's rings are very easy to shift accidentally. It is not very fast to operate, because it uses both sides. Instead of numeric values it shows approximate 'zones' only. But if you have no other way to calculate DOF or hyperfocal distance, then it does what it is supposed to do with all it's caveats.
    Date published: 2009-01-18
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