The difference that matters
The Panasonic PT-VZ580U is brighter (5,000 lumens against 3,600). The Panasonic PT-VZ580U lists higher resolution (WUXGA). The Optoma ZW350ST uses a laser light source; the other uses a lamp. The Optoma ZW350ST costs $491 less at the prices we observed.
Side by side
| Specification | Optoma ZW350ST | Panasonic PT-VZ580U |
|---|---|---|
| Brightness | 3,600 lm | 5,000 lm |
| Resolution | WXGA (1280 × 800) | WUXGA (1920 × 1200) |
| Native aspect | 16:10 | 16:10 |
| Throw ratio | 0.521:1 | Not published |
| Distance for a 10.5 × 8 ft 4:3 screen | 6′ 7″ | — |
| Brightness on that screen | 36 fL | 50 fL |
| Light source | Laser | Lamp |
| Rated life | 30,000 h | 7,000 h |
| Zoom | Fixed | — |
| Lens shift | — | ±40% |
| Input lag | — | — |
| Price seen | $909 | $1,400 |
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 want no lamp replacements or price leads the decision.
Panasonic PT-VZ580U
Choose the Panasonic PT-VZ580U 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