Chrosziel Lens Testing Projector | Why They’re EssentialBy Matthew Fresolone | June 13th, 2022
Bokeh Rentals recently acquired a state-of-the-art lens testing projector for its Los Angeles facility. The P-TP7 II is made by Chrosziel, an international company dedicated to lens technician equipment.
To celebrate, we’re writing about why Lens Testing Projectors are the unsung backbone of professional cinematography.
Why Lens Projectors Are ImportantLens projectors are the most accurate way to judge the performance of a cinema lens.
The easiest way to test a lens is by simply shooting footage. Even if the image looks great in a monitor, that leaves a lot up to faith. Without a systematic test of your lens through a lens testing projector, you may be surprised when your footage is blown up to a movie screen or even just a television screen. There are plenty of image characteristics that wouldn’t be visible on a small screen, that would be boldly apparent on a large screen. Using a Lens Testing Projector takes any variables from the camera out of the equation, so you can be 100% sure about the quality of your cinema lens.
When you record images through a camera on a film set, the flow of light is through the lens into the sensor. Testing a cinema lens with a lens projector reverses this approach. Light is emanated through the projector, through the lens, and onto a wall. Lens technicians then use that light in conjunction with calibrated charts to assess the lens’ image.
|Lens testing is a systematic approach to uncovering many characteristics of the image:
Bokeh Rentals Lens Technician tests P+S Technik Technovision with Chrosziel TP7 II
Creative Lens TestingLens Testing isn’t entirely about testing how well a lens performs. That’s because, when you get down to it, lens characteristics are subjective.
Any imperfections found are creative tools waiting to be exploited; look no further than the wealth of vintage-inspired cinema lenses on the market. These imperfections are embraced at all levels of filmmaking. For example, even the megabudget superhero film, The Batman, employed creative use of focus falloff at the frame’s edges.
Bokeh Rentals New Lens Testing ProjectorBokeh Rentals has a new lens projector to test all its equipment! This Lens Testing Projector, the P-TP7 II from Chrosziel, is the newest industry-grade lens testing system out there. In fact, an earlier version of the TP7 II was used by Chrosziel at its Lens Proejction Class at Cinegear back in 2019.
- Capable of fitting lenses with an image circle up to 60mm.
- Large universal mount (PL, LPL, EF, E, and others)
- 3 x 3 filter insert
- Support for 19mm rods
- Multiport for Lens Data & Lens Control
Considering renting? Why not check out Bokeh Rentals’ P+S Technik packages!
•Rent the PS TECHNIK TECHNOVISION ANAMORPHIC 1.5X FF at Bokeh Rentals
Contact us to customize a package to suit your production needs at low prices!