one important aspect of bridge cameras, is more noise.
noise, in digital photography, is the messy grainy pixels in the darker areas of the picture.
noise i generated by something surprisingly simple. bad circuitry:
all electrical circuits generate a magnetic field. these magnetic fields interfere with other circuitry nearby.
this interference causes random photons to fire of, causing a random discoloured pixel to apear in your photo.
in many small compact cameras, the circuitry is often very close together, and in a cheaper camera, not well mapped out.
the practical difference between the good and bad circuitry is in regards to your ISO settings:
when you increase the ISO on a digital camera, you, in effect, tell the camera to pump more current through the sensor, picking up more light, but because more current is being pumped through, more magnetic interference is created, causing noise.
thats why often a bigger camera offers better quality photos. simply because there is more room to space out the circuitry.
If its landscape photography you are interested in, i recommend a more compact camera, and keeping ISO as low as possible (<100) and bringing a travel tripod.
even a smaller, compact camera with bad circuitry can produce beautifully sharp/clear shots if you use long exposures.
but if your wanting to capture moments, due to small lens = smaller apature, you need to crank the ISO up considerably, resulting in noisy, lower quality photos.
if you have any other questions regarding camera specs feel free to message me