Quick answer
Choose F33-3 Corunus if you want a subtler, slightly smaller lens that can be ordered with prescription and works for eerie, less gory characters. Choose F34 Blood Splat if you need an unmistakable blood-splatter effect for a zombie or slasher look. Both share a 40% water content and Korean hydrogel build, so the main trade-off is design intensity versus a marginally smaller diameter and prescription availability.
Design intent: subtle scare vs. full gore
F33-3 Corunus leans toward a more restrained horror aesthetic, often used for unsettling or possessed characters rather than outright blood. Its 14.2mm diameter keeps the effect closer to a natural iris size, so it reads as eerie from a distance without overwhelming your face. F34 Blood Splat is built around a bold blood-splatter pattern that covers more of the lens surface, making it a stronger choice when the costume needs to be read instantly as bloody or undead. Neither lens is designed for everyday wear; they are costume pieces meant for photos, events, or haunted-house work.
Fit and comfort: what the numbers tell you
Both lenses share a base curve of 8.8mm except F33-3 Corunus, which uses an 8.7mm base curve. That 0.1mm difference is small but can matter if you already know your eyes prefer a specific curve. F34 Blood Splat and F33-3 Corunus both have a 40% water content, which is a middle-ground hydration level: comfortable for short costume sessions but not ideal for all-day wear without rewetting drops. F33-3 Corunus is the only one of the two with a prescription option, so if you need vision correction, that is your pick unless you plan to wear them over clear contacts (which requires a proper fitting).
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How to choose for your specific horror look
If your character is a zombie, victim, or slasher, F34 Blood Splat gives you the clearest blood-splatter signal. If you are portraying a vampire, demon, or subtly cursed figure, F33-3 Corunus keeps the eye area unsettling without literal blood. Consider your lighting: under stage lights or flash photography, the larger 14.5mm diameter of F34 Blood Splat will show more pattern, while F33-3 Corunus may appear more natural. For group cosplays, mixing both can create variety, but keep the overall palette consistent.
Trade-offs to weigh before you buy
- Effect intensity vs. subtlety: F34 Blood Splat delivers an obvious blood-splatter look; F33-3 Corunus is more restrained and works for eerie rather than gory characters. Pick based on how quickly your costume needs to read as horror.
- Prescription availability: F33-3 Corunus can be ordered with prescription; F34 Blood Splat is not listed with that option. If you need vision correction, F33-3 Corunus is the simpler choice.
- Diameter and base curve differences: F34 Blood Splat has a 14.5mm diameter and 8.8mm base curve; F33-3 Corunus has a 14.2mm diameter and 8.7mm base curve. A 0.3mm diameter difference can change how much iris is covered; if you have sensitive eyes, get fitted first.
Product facts at a glance
- F33-3 Corunus: DIA 14.2mm, base curve 8.7mm, 40% water content, hydrogel, made in Korea, available with prescription. Slightly smaller diameter and a prescription option make it the better pick for subtle horror looks or for cosplayers who need vision correction.
- F34 Blood Splat: DIA 14.5mm, base curve 8.8mm, 40% water content, hydrogel, made in Korea, no prescription option listed. Larger diameter and blood-splatter design create a stronger gore effect, but you will need clear contacts underneath if you require vision correction.
Which lens is right for you?
Best for
- Cosplayers who need a prescription option and prefer a subtler, slightly smaller horror lens
- Characters like vampires, demons, or possessed figures that do not rely on blood effects
- Anyone with a 8.7mm base curve preference or smaller iris size
Not for
- Costumes that require an unmistakable blood-splatter effect
- Those who want the larger 14.5mm diameter for more pattern coverage
- Wearers who need a lens that reads as gory from a distance
