The EIKI EK-308U is brighter (6,000 lumens against 3,600). The Optoma ZW350ST throws a given image from closer (ratio 0.521 against 1.07). The EIKI EK-308U lists higher resolution (WUXGA). The Optoma ZW350ST uses a laser light source; the other uses a lamp. The Optoma ZW350ST costs $916 less at the prices we observed.
Side by side
| Specification | Optoma ZW350ST | EIKI EK-308U |
|---|---|---|
| Brightness | 3,600 lm | 6,000 lm |
| Resolution | WXGA (1280 × 800) | WUXGA (1920 × 1200) |
| Native aspect | 16:10 | 16:10 |
| Throw ratio | 0.521:1 | 1.07–1.75:1 |
| Distance for a 10.5 × 8 ft 4:3 screen | 6′ 7″ | 13′ 6″ |
| Brightness on that screen | 36 fL | 60 fL |
| Light source | Laser | Lamp |
| Rated life | 30,000 h | — |
| Zoom | Fixed | 1.6× manual |
| Lens shift | — | Vertical ±45%, horizontal ±9% (manual) |
| Input lag | — | — |
| Price seen | $909 | $1,825 |
Highlighted rows differ. Figures come from each product's sources; room depth, distances and brightness are FOREference calculations using the same method for both.
Which should you choose?
Optoma ZW350ST
Choose the Optoma ZW350ST if you need to mount it close to the screen or you want no lamp replacements.
EIKI EK-308U
Choose the EIKI EK-308U if your room has ambient light or a large screen or image detail matters most.
Before you buy either
- Check the room: room size calculator and ceiling height calculator.
- Confirm what each seller includes — accessories, software trials and bundles change often.
- Read the limitations on each full reference page.
FOREference compares published specifications; we have not tested these products side by side. How we work · Disclosure