The ruggedly constructed housing of the Colorimetry Research CR-250 Tristimulus Colorimeter/Photometer from SpectraCal is made of machined aluminum and stainless steel, and it can withstand high acceleration rates for the most demanding motion positioning systems and environments. All optical components are fixed to ensure that no optical misalignments occur due to vibration, shock, or high acceleration/ deceleration rates.

It weighs only 1.2 lb, and it is the perfect tool for display inspection and calibration and for mounting on fast-moving XYZ tables. Its small size and shape allow several CR-250s to be mounted on the same motion control system and the simultaneous measurement of several spots in the same display.

CR-250 Tristimulus Colorimeter    Visible Spectrum (380 to 780nm)    Wide Dynamic Range    Compact and Rugged    VO-201 Viewfinder for CR-250    Detachable Viewing System    Horizontal Rotation Adjustment

• Compact and Rugged
  • Constructed using machined aluminum and stainless steel; weighs 1 lb (1.2 lb with viewfinder VO-201)
• Spectral Bandwidth and Accuracy
  • Visible spectrum (380 - 780nm) with a spectral bandwidth of 4nm spectral resolution of 1.6nm/pixel spectral accuracy of ± 0.3nm
• Custom Apertures
  • A single fixed aperture but can be customized when ordering (available at order time: 3, 2, 1, 0.5, 0.25, or 0.125°)
• Detachable Viewfinders
  • Designed for viewfinders that are easily detachable and replaceable from the instrument's main body
• Dynamic Range
  • Luminance range of 0.02 to 154,000 nits (0.006 to 46,000 fL); sensitivities measured for 10:1 signal-to-noise (RMS)

The CR-250 is a USB 2.0 compatible device, remotely controlled by the host software from any personal computer, laptop, or netbook. As an option, the CR-250 can also be controlled by an Ethernet 10BASET/100BASE-TX IEEE-802.3 compliant connection or an RS-232 port.

The CR-250 allows uploading up to three sets of custom CMFs, which can be alternate standards proposed by different organizations, such as Judd-Voss 1978, or custom CMFs a researcher may be working on.

Related Questions and Answers

Q: 1. Does it have an adjustable diopter?

A: Yes it does.

Q: 2. How much height adjustment does this have?

A: Using the long bracket you will get 60mm of height adjustment. That is enough to cover the Nikon D850 with a grip or Canon 5D Mark 4 also with the grip.

Q: 3. Will it fit on a Canon 5D Mark III?

A: I have a Nikon so I can't tell you. I will tell you I love it. I removed the eye cap. I like it much better without the eye cap myself. Skip

Q: 4. where can i buy the tiny red screws of the baseplate?

A: if the store does not have them try home depot or Lowes to see if they have some that will fit it ..or try a hobby store..those who fly remote controlled models use this type of screw to hold the body on to the fuselage or wings to the body....or email the B&H store direct..i find the store helpful

Q: 5. Will this work with a Sony a5000 mirrorless lcd? I can't see the screen on that camera because it's so small and I want this to help with focusing.

A: Yes, it will work with the A5000.

Q: 6. Can it fit the Canon R5/ R6 ?

A: While this item can fit a 3.2" LCD, it has not been tested to our knowledge with the EOS R5/R6. Your results may vary.

Q: 7. once on can you mount to a tripod?

A: Yes you can. I suggest a sturdy one.

Q: 8. Looks like this will work with original Canon EOS M that has a 3 inch screen? As far as I can see no EVF is available for this camera, right?

A: I have no any Canon camera. I use it in a Nikon D7000 and it works right.

Q: 9. Does it fit with the Nikon D800 and D810 plus battery grip?

A: Yes, there are long rails that will allow you to use the OptiView 250 with cameras installed with battery grips.

Q: 10. will this fit a D7100 or a D500 Nikon?

A: Yes this product will work with the Nikon D500 and D7100.