How can we make photos look better on a club projector?
Asked 4/19/2012
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2 answers
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Our photography club critiques images by projecting them onto a wall, and many members feel the projected image quality is poor. We can’t replace the projector or install a large dedicated screen. What practical steps can we take so photos look as good as possible when projected, while still looking good on a monitor?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
14y ago
2 Answers
10
Projector native resolution needs to be taken into account. This will often be no higher than about 1024 x 768 in cheaper or older projectors. If you drive it at higher resolutions or at different aspect ratios it may convert internally but you are at the mercy of its processes.
A very major and often overlooked factor in using a projector is that what you see when the projector is turned off IS black, when the projector is turned on. The projector cannot "make" darkness - it can only add light to the starting black level. So, turn off the projector. That's black. If that is not black enough you need to do something about it.
Minimum to zero light level is one thing.
A screen should be used - a coloured wall changes your "black". The "screen" can be a roll of white paper (carefully rolled up afterwards or a cloth, preferably tensioned to make it ripple free.
I have found that ambient light reduction makes a stunning difference to otherwise poor results.
Originally by user6263. Source · Licensed CC BY-SA 4.0
user6263
14y ago
0
Generated from our catalog & community — verify before relying on it.
Poor projected image quality is usually more about the display setup than the photos themselves.
A few things matter most:
- Match the computer output to the projector’s native resolution and aspect ratio. Older/cheaper projectors are often around 1024×768, and feeding them a different resolution can cause ugly internal scaling.
- Use software that scales images well. Poor resizing can make grain, fine patterns, and moiré look much worse.
- Calibrate the projector if possible. An uncalibrated projector can have very inaccurate color and tone. A display calibration tool can help create a better profile.
- Improve the projection surface. A wall color affects blacks and overall color. Even a simple neutral white screen or smooth white paper is better than a colored wall.
- Control ambient light. Projectors can add light, but they can’t make true black—so darker rooms help contrast a lot.
In short: optimize the projector setup, room, and playback chain. If images already look good on a monitor, the projector system is likely the weak link, not your photography.
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