A clear or UV filter adds a layer of glass that can take a scratch or smudge instead of your lens. Shooting without one gives the purest optical path. Neither answer is right for everyone, and your conditions should decide.
What a Front Filter Does
On film cameras, UV filters reduced haze. Modern digital sensors already handle ultraviolet light, so today the filter is mostly sold as physical protection. It is easier and less costly to replace a filter than the front element of a lens.
It can also make cleaning easier, since you can wipe the filter hard without worrying about the lens coating beneath.
What Shooting Bare Offers
With no filter, there is one less glass surface to cause reflections. In difficult light, such as street lamps at night or sun in the frame, extra glass can add ghosts or flare, especially with poor coatings. A lens hood already gives a useful degree of shielding against bumps.
Bare lenses also remove any chance of a mismatch in quality between a poor filter and a fine lens.
Side-by-Side Differences
| Aspect | With a clear filter | No filter |
|---|---|---|
| Physical guard | Extra layer for scratches and splashes | Relies on hood and care |
| Flare and ghosts | Possible, depends on coatings | Less risk |
| Cleaning | Easy to wipe and replace | Gentler technique needed |
| Sharpness | Minor effect with quality glass | Unaffected |
Who Should Choose Which
- Choose a filter if you shoot at beaches, in dusty places, at events, or with children and pets nearby.
- Choose no filter if you shoot controlled scenes, night skies or backlit subjects where flare would hurt.
- Choose a filter for older, softer lenses where you want to guard worn front glass.
If you do use one, buy good quality with proper coatings, and remove it when it causes problems.
Quality varies widely between filters. Look for multi-layer coatings and a frame that fits snugly. If you see new ghosts, loss of contrast or a colour shift after fitting one, take it off and compare. Remember that a filter is a modest guard, not armour, and that careful habits matter most: caps on when not shooting, a hood while shooting and a padded bag between outings.
FAQ
Will a filter stop a serious drop?
Not reliably. A hard knock can break the filter and might even damage the glass beneath. It protects against light scratches and grit, not against heavy impacts.
Is a hood a better choice?
For bumps and stray light, a hood is a sound habit. Many photographers use both a hood and a clear filter.
The Short Version
Use a good quality clear filter in rough, dusty or wet conditions and shoot bare when flare control matters most. Pair either approach with a hood and sensible handling.
