Απο τον περίφημο Greg Rogers ενα πολυ χρήσιμο calculator για υπολογισμούς μεγέθους οθονης vs Projector Lumens/Brightness κλπ
Screen Size vs Projector Lumens/Brightness
Questions about screen size and gain vs projector lumens, brightness, contrast ratio and black level are asked in many threads of this forum. So I posted a calculator program you can download that computes the relationships between these variables. There is nothing newly profound here, but it's a bit more flexible than some of the web page calculators and you can download a standalone version for your PC or Mac. There are 4 sections to the calculator:
1. Screen Size(W/H/D), Aspect Ratio, Lumens, Illuminance, Gain, Luminance, Contrast Ratio, Black Level - Calculate each from various combinations of others.
2. Screen Size, Aspect Ratio, Seating Distance, Horizontal Field of Vision, and Lines per Picture Height relationships
3. Screen Mounting Height - Does the line-of-sight trig for Screen Mounting Height vs row seating height, riser height, seating row separation, and seating distance.
4. Seating Inset - Does the line-of-sight trig for seating position when tall standalone speakers are placed at the sides of the screen.
Για να το κατεβασετε επισκεφτείτε το http://www.accupel.com και θα το βρειτε στο τελος της σελιδας για τα manual του HDG-4000.
Πηγη: www.avsforum.com
Screen Size vs Projector Lumens/Brightness
Questions about screen size and gain vs projector lumens, brightness, contrast ratio and black level are asked in many threads of this forum. So I posted a calculator program you can download that computes the relationships between these variables. There is nothing newly profound here, but it's a bit more flexible than some of the web page calculators and you can download a standalone version for your PC or Mac. There are 4 sections to the calculator:
1. Screen Size(W/H/D), Aspect Ratio, Lumens, Illuminance, Gain, Luminance, Contrast Ratio, Black Level - Calculate each from various combinations of others.
2. Screen Size, Aspect Ratio, Seating Distance, Horizontal Field of Vision, and Lines per Picture Height relationships
3. Screen Mounting Height - Does the line-of-sight trig for Screen Mounting Height vs row seating height, riser height, seating row separation, and seating distance.
4. Seating Inset - Does the line-of-sight trig for seating position when tall standalone speakers are placed at the sides of the screen.
Για να το κατεβασετε επισκεφτείτε το http://www.accupel.com και θα το βρειτε στο τελος της σελιδας για τα manual του HDG-4000.
Πηγη: www.avsforum.com
