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Photometer 2


The Photometer 2 was developed in consultation with a group of large format photographers, who wanted an affordable solution to image-plane point metering.DLG Exposure Meter

Although image plane metering systems of this type have long been available, the hefty price tag (admittedly providing extensive and sophisticated features) has made the cost prohibitive for amateur and cost-concious professionals. The solution was to develop a less sophisticated and less feature-heavy metering system that provided the essential basic functions in an affordable yet accurate and reliable unit.

The result is a convenient hand-held metering unit, with a metering probe in a frame that inserts in the camera in place of the usual film carrier.

DLG Exposure Meter Hand HeldFeatures

  • Developed in consulatation with large-format photographers
  • Meter light level at any point in the image plane
  • Optimise exposure settings for highlight, shadow areas and mid-tones
  • Wide sensitivity range - exposures from 1/2000s to > 1 hour
  • Settable film speed
  • Two memories - store shadow or highlight tones while metering another to optimise exposure across the image
  • Convenient hand-held battery-operated meter unit, intuitive and easy to use
  • Metering probe and frame inserts in camera in place of standard film carrier
  • Ideal when using the Zone system.
  • Case - black ABS plastic, frame black ABS plastic, meter probe fibreglass.
  • £180 + £10 p&p (UK mainland, please contact us for overseas orders).


Using the Photometer 2

The frame, with its metering probe, is inserted into the rear of the camera in place of the usual film carrier. The metering probe is connected to the meter unit with the connecting cable provided.DLG Meter Frame and Sensor Probe

The metering probe can be observed through the ground glass and positioned to a point of interest in the image. The "exposure" control on the meter is adjusted to zero the metering display. This tells you the exposure required to give a mid tone at the metered point in the image. A range of positions in the image can be selected and metered in order to determine the best compromise exposure for the image as a whole, and to ensure that chosen image highlights and shadow tones are rendered correctly.

This method allows the user to optimise the exposure to suit any particular region of interest in the image, for example, to allow good rendering of shadow or highlight detail.

The meter display is calibrated in stops and covers a range of plus/minus 4 stops (a factor of +/- 16 in brightness) - this encompasses the normal usable range of the film and indications at the end of this range will normally result in full white or full black in the final print.

Two memories are provided which allow the light intensity at two points in the image to be retained for future reference when metering a third.

DLG Exposure Meter Front viewA rear sliding shutter is provided which may be closed when excessive light is entering through the ground glass and affecting the readings.



Exposure Range:

1/2000 second to 1 hour at 125 ASA

Film Speed settings:

32, 40, 50, 64, 80. 100, 125, 160, 200, 400, 800, 1600 ASA

(16, 17, 18, 19, 20, 21, 22, 23, 24, 27, 30, 33 DIN)


± ⅓ stop* (1/s and s ranges only)

“Hold” duration:

¼ hour to ⅓ stop minimum.

Peak Spectral Response:

530 nm

Power consumption:

10 mA approx, battery monitor and display light off

Battery type


Battery reverse connection protection:


Settling time:

<1s, exposures 1/2000s to 1s at 125 ASA

<10s, exposures 1s to 1 min at 125 ASA

<1min, exposures 1 min to 1 hr at 125 ASA




12 oz. approx


Meter Unit: 4½” x 6” x 1⅝”

Metering Probe: 10¼ “ x 1⅜” x ⅛”

Frame: - to suit camera format.


The unit can be supplied with frames to suit cameras of 4x5, 5x7 or 8x10 format. Please ensure you specify the correct size when ordering. Additional frames can also be purchased if you to allow the meter to be used with multiple formats.

We can also supply other sizes to order including bespoke sizing.  Please contact us.

It is possible to have your meter customised, for example, to include different film speeds, exposure ranges etc. Please contact us and w e will be happy to discuss your requirements and provide a bespoke solution.


Please contact us if you require any further information prior to purchase.


Download the User's Guide

How to Buy

USFlagUS customers please purchase from CatLABS of JP CatLABS


Buy "Photometer 2" with one metering frame - £180 + £10 p&p:

Choose format

Buy Additional Meter Frames:


Go To View Cart to complete the purchase

What You Get

Photometer 2
Sensor Probe
Sensor Probe Frame (inserts in camera in place of film carrier)
Connecting Lead (1.5m)
Instruction Booklet - 16 pages (also downloadable here)

All provided in a foam lined quality rigid storage carton.

Please note that due to shipping rules the unit is provided without battery - type PP3 required.

Meter In BoxMeter In Box OpenedMeter In Box Open All 

Click on the image to enlarge.


© DLG Electronics 2017