Today I would like to present a review of an interesting lamp, the Litesam PS50. It is identical to the Fitorch P50 and just re-branded so I mentioned it in the title in this review.
I received it from the retailer Masterled-official.com (@MasterLED ) in the white version. Many thanks for the opportunity!
I would like to point out that the service provided by the retailer was excellent - the first delivery was lost in transit (stolen from the truck during shipping), after which a second shipment was sent immediately, which arrived around two weeks later. No complaints here, there were no problems with customs, it was delivered directly to me.
Packing
The lamp is delivered in a cardboard box with a lid held in place by magnets. Unfortunately it was slightly damaged at the top upon arrival. Once opened, you have access to all the accessories included. In addition to the lamp and the already inserted 32650 6800 mAh battery (an insulation pad has to be removed before first use), a lanyard, a 55 cm long USB-C cable (for charging only), replacement O-ring, instructions and warranty card are included.
Unfortunately, there are some spelling mistakes on the packaging and in the instructions. It is not clear which color of the light is in the package unless it is opened, since there are no markings at all.
Quality
The lamp makes a very solid impression and feels very solid thanks to the thick walls, which I really like - it doesn’t sound hollow just by grabbing it, but like a piece of metal. The weight distribution is very good, it is neither front- nor rear-heavy. The white coating is matt and feels velvety soft. It seems to be relatively robust; after a week of testing with a lot of tailstand on tables and floors, there are hardly any signs of wear on the tailcap.
There is a tripod thread on the side opposite the switch. The USB-C connection is located to the right of the switch.
The LEDs are protected with an AR coated front glass. This appears to be slightly thicker than normally used in flashlights of this head diameter. I never noticed any fogging inside the head while using the light.
When looking at the LEDs, it is noticeable that the reflector is calculated and manufactured to a very high standard; rings or other conspicuous features like dents are not visible, which should have a positive effect on the light image.
Due to the mass of the lamp, heating on Turbo is limited; the lamp only becomes uncomfortably warm after about 1 minute. The battery tube will warm as well, which contributes to the cooling.
Handling
The side switch is made of stainless steel and is surrounded by a green or red illuminated ring which indicates the battery voltage. The switch does not light up permanently. The pressure point is good, so there is no reason to criticize it. However, it can only be felt blindly to a limited extent. This is even more important if wearing gloves.
There is no real roll-away protection - only the lanyard mounting on the battery tube prevents it from rolling away directly. On a more steep incline (approx. 25°), the lamp still rolls away.
The USB-C port is sealed with a rubber cap in a matching color. It closes tightly and does not open on its own when the lamp is in use. All tested USB-C cables fit in.
The power bank function worked in the test with all connected devices and all USB data cables.
LEDs
There are 3 main LEDs, 8 warm white mid-power LEDs and 8 RGB LEDs installed.
The model and manufacturer of the 3 main LEDs in 5050 format is not known. The manufacturer remains silent about this. Due to the design and the matt surface of the LED chips, I suspect that they could be Lumenpioneer LHP5-2.EA.
However, these are only available with 6 V forward voltage and based on existing reports of different brightnesses with different batteries, it can be assumed that a FET driver is used here and the LED is therefore operated with 3 V.
The types of the warm white mid-power and RGB LEDs are also unknown. The warm white LEDs are each equipped with three LED chips.
The RGB LEDs each have one LED chip for blue, red and green.
As the bezel can simply be unscrewed, the LEDs are accessible in principle.
UI
The UI is kept relatively simple.
- 1C from OFF: Start the main LEDs in the last level used (mode memory), switch through modes (L-M-H) with 1H, switch off again with 1C. With 2H you can quickly switch from the main LEDs to the warm white LEDs at any time.
- 2C from OFF: Start the main LEDs in Turbo, for further operation see above
- 3C from OFF: Start the color LEDs in the last color used (mode memory), change color with 1H, change color mode with 3C (no mode memory), switch off with 1C
- 4C from OFF: Switch on lockout - press 4C again to switch off
- 5C from OFF: Voltage check, LED in side switch flashes: 1 V = 1 flash green, 0.1 V = 1 flash red
- 1H from OFF: Start warm white flood LEDs (only one level possible), switch off with 1C
Unfortunately, no light levels can be selected for the warm white light. If 1H is pressed in this mode, nothing happens. What a pity.
In general, there is no moonlight mode available, the chosen light mode doesn’t matter for this. For me, this is the biggest shortcoming of the UI. However, the light levels are otherwise well coordinated.
Performance
The measurements were carried out with the supplied 32650 battery at 4.2 V after charging it in the light via USB-C.
| Column 1 | Column 2 | Column 3 | D |
|---|---|---|---|
| Main LED cool white 70 CRI | Low | 136 lm | 500 lx |
| Mid | 847 lm | 3650 lx | |
| High | 2588 lm | 10160 lx | |
| Turbo | 8610 lm | 30500 lx | |
| Flood warmwhite 90 CRI | Single mode | 180 lm | 83 lx |
The big difference between the manufacturer’s specifications and real-life performance is striking. Even if my measuring device had stronger deviations of ± 10 % or the linearity deviated, this would not be sufficient to explain the large discrepancy. Even outdoors, it doesn’t feel as if the PS50 has over 58 kLux.
Light color and beam
The beam is simply perfect. A clearly defined, circular spot is surrounded by a wide corona; there is virtually no spill. This makes the lamp with the main LEDs an all-rounder - it is ideal for working at close range. There are no disturbing color gradients around the spotlight. Very nice!
The warm white flood LEDs simply provide floodlight, there’s not much to say.
When using the color LEDs, there are polygonal patterns around the floodlight, which is caused by the jagged bezel.
The light quality is mixed. The main LEDs provide a minimally greenish, cold white light with a low color rendering value. The tintshift with increasing current is barely noticeable. On the whole, the main LEDs are usable in terms of light quality.
The warm white LEDs produce light with high color rendering. The color temperature corresponds approximately to that of halogen light sources. The duv is perfectly on the BBL, measured at -0.0000. In principle, my sample is therefore a reference lamp for calibrations. Subjectively, the light is simply good.
The color LEDs provide light as expected. The respective wavelength peaks are listed here:
- red: 630 nm
- blue: 465 nm
- green: 520 nm
Deep red light, often called “photo red” (wavelength around 660 nm), is unfortunately not available here.
Conclusion
I like the lamp. It is a gimmick and at the same time offers real value in everyday life. The build quality is great. The UI is easy to understand, which makes it suitable for non-flashlight enthusiasts, especially combined with the supplied ready-to-use solution with battery and USB-C charging.
After two walks in the forest, I can say that the power combined with the all-rounder beam and the warm white LEDs are a good match - I often use the PS50 indoors as ambient lighting. At almost 900 lm, the middle level in particular is completely sufficient without the lamp getting too warm.
I don’t like the lack of light levels in warm white mode and especially the lack of moonlight.
In addition, the brightness at 1 m was massively inadequate compared to the manufacturer’s specifications.
Hope the review was helpful.
See you soon! Look for my LED tests if you want to know more about them in flashlights. Soon there will also be an unprecedented new feature that will make using my LED test results much easier. Stay tuned!
Best regards, Dominik 
