# Vignetting Driving Me Nuts, Looking for Advice

**URL:** <https://forums.negativelabpro.com/t/vignetting-driving-me-nuts-looking-for-advice/8554>\
**Category:** Digital Camera Scanning\
**Created:** [December 5, 2024, 11:27pm UTC](https://forums.negativelabpro.com/t/vignetting-driving-me-nuts-looking-for-advice/8554 "2024-12-05T23:27:00Z")\
**Posts on this page:** 1\
**Showing post:** 35

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**Author:** ![yunhao.jiang](https://avatars.discourse-cdn.com/v4/letter/y/96bed5/32.png) [@yunhao.jiang](https://forums.negativelabpro.com/u/yunhao.jiang)\
**Post date:** [February 12, 2025, 10:50pm UTC](https://forums.negativelabpro.com/t/vignetting-driving-me-nuts-looking-for-advice/8554/35 "2025-02-12T22:50:28Z")

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It is indeed very uneven, had similar issue even after two try.

For anyone that is looking for a good, cheap, light source with very high CRI and brightness + evenness, I recommend RaLeno PLV-S192:

> [@Kaiser Slimlite Plano vs. RaLeno PLV-S192 (Brightness Uniformity)](https://forums.negativelabpro.com/t/kaiser-slimlite-plano-vs-raleno-plv-s192-brightness-uniformity/3434/13):
>
> CRI measured for Raleno PLV-S192: Measured at 100% 5000K Setting Result is XYZ: 26652.889361 27160.778107 24263.266835, Yxy: 27160.778107 0.341367 0.347872 Ambient = 27160.8 Lux, CCT = 5135K (Duv -0.0004) Suggested EV @ ISO100 for 27160.8 Lux incident light = 13.4 Closest Planckian temperature = 5147K (DE2K -0.6) Closest Daylight temperature = 5255K (DE2K -5.1) Color Rendering Index (Ra) = 98.2 [R9 = 94.9] R1 = 98.3 R2 = 98.9 R3 = 99.1 R4 = 97.4 R5 = 98.3 R6 = 95.6 R7 = …

If you look at the Duv value, it has almost perfect score (the light is perfectly WHITE with no sign of green or purple, read more [here](https://www.waveformlighting.com/tech/calculate-duv-from-cie-1931-xy-coordinates))

Although NS 4x5 uses a better LED strip where R9 and R12 might be slightly better, the unevenness is a true problem. Plus the brightness is also terrible. I DO NOT recommend spending 300 dollar on them (it’s Waveform Absolute Series, which only cost around 10-20 bucks for the two strips that NS used in its 4x5 light source).

Get PLV-192 and all your problems will be gone! (After calibration I use the light source at around 4700K → which measured around 5000K).

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