Ultra Optical Investigation

From Elwiki
Through improved optical research, Spectrum switching becomes more swift and cooldown is reduced to 0.5 seconds.
When you use skills that activate the spectrum such as El Crystal Spectrum or Energetic Heart, increase Critical, Maximize chance for a set duration and increase damage to Mid Boss/Boss monsters.
Additional Force Field: Reactive (Green)
  • Use El Crystal Spectrum skill key to switch.
  • Electron/Beam attacks become piercing and homing attacks.


Class Level Required
Code: Battle Seraph 35

Skill Information

Skill Level Level Required Status 668.png Self BuffUltra Optical InvestigationSelf BuffUltra Optical Investigation
(On El Crystal Spectrum/Energetic Heart use)
This effect is additive
to your current stats. 
This effect is additive
to your current stats. 
Damage Dealt to Mid Boss /
Boss Monsters Increase
This effect is additive
to your current stats. 
1 35 6% 20 Seconds
2 51 9%
3 59 12%
4 93 15%
1 35 6% 10 Seconds
2 51 9%
3 59 12%
4 93 15%

Reactive Mode

Status 066.png Self BuffReactive FieldSelf BuffReactive Field
Affected Command Damage Additional Effect
  • Electron attacks can pierce and will home in on enemies.
  • Beam attacks will be converted into multiple homing spears.

Tips and Details

  • Any affected attacks will also suffer a decrease in MP regeneration, but the projectiles will have increased range.
  • Once you unlock this passive, El Crystal Spectrum will only do its activation animation when used initially, and changing modes occurs instantly instead, including in midair. This also means no more hitstun can be dealt past the initial cast however.
  • When targets are not within homing range, the homing projectiles will scatter out randomly.
  • For any projectiles that gain piercing properties due to this skill, the range it can travel is based on where it last hit an enemy.
    • For example, if the range of the attack is 700, and it hits an enemy far into its range, the next enemy it can home into can be anywhere within 700 of the location of that enemy, significantly extending a skill's reach.


Reactive Mode special icon.
  • In NA, Induction Mode is renamed to Reactive Mode.
  • The icon that appears when switching to Reactive Mode has a caption saying "Induction Mode. System All Green".


Date Changes
08/30/2012 09/04/2013
  • Ultra Optical Investigation added.
02/05/2015 -
  • Amplification Size Increase decreased.
09/20/2018 10/11/2018
  • Critical Rate using Field increased.
  • Maximize using Field effect added.
05/27/2021 06/23/2021
  • Removed Amplication Size Increase effect.
    • Maximum increased size effect becomes the new default size of Amplification field.
  • Changed buff effects to apply for a certain duration on use of El Crystal Spectrum/Energetic Heart instead of only affecting Field-using attacks.
  • Crit Rate Increase increased.
  • Maximize Increase increased.
  • Damage Increase Against Boss/Mini Boss effect added.

Alternative Names

Server Name Translation
Korean Flag.png South Korea 초광학 연구 Hyper Optical Research
Japanese Flag.png Japan 超光谱研究 Ultra Spectrum Research
Chinese Flag.png China (Simplified Chinese) 超光学研究 Ultra Optical Research
German Flag.png Germany Hyperoptik-Forschung Hyper Optical Research
Spanish Flag.png Spain Investigación de hiperlentes Hyper Lens Investigation
French Flag.png France Recherche hyperoptique Hyper Optical Research
Italian Flag.png Italy Scienza Iper-Ottica Hyper Optical Science
Polish Flag.png Poland Badania nad Hiperoptyką Hyper Optical Research
English Flag.png United Kingdom Hyper Optic Research
Brazil Flag.png Brazil Pesquisa Ótica Optical Research