grandenaboverde
O Senhor dos Bolinhos
A dpreview tem um artigo muito interessante sobre o ISO alto em máquinas compactas.
O mais recente cavalo de batalha das marcas, agora que a guerra dos megapixeis parece estar a acalmar um pouco.
» http://www.dpreview.com/articles/compactcamerahighiso/
O mais recente cavalo de batalha das marcas, agora que a guerra dos megapixeis parece estar a acalmar um pouco.
» http://www.dpreview.com/articles/compactcamerahighiso/
Resumo:
» There is a lot of variation in the appearance high ISO output of different cameras, but they're all crippled by the same small sensors / lack of sensitivity.
» Do not expect to be able to produce large prints from compact camera high ISO modes.
» Subject matter matters: portraits are a lot more forgiving of noise reduction than landscapes.
» Once you get over ISO 400 any advantage of higher megapixel counts is usually lost.
» There is no compact camera on the market that can produce acceptable full size results at ISO 3200, and only a handful that can at ISO 800 or ISO 1600.
» Even viewed full screen on a large monitor you will see the loss of quality.
» Optical image stabilization is not a replacement for high ISO - it can combat camera shake, but it doesn't allow you to increase the shutter speed and therefore cannot do anything about blur due to movement of the subject in low light.
» If you intend to buy a compact for use in low light look for a fast lens (wide maximum aperture) - it's worth a lot more than a pointless ISO 1600 mode.
» For small social snaps (friends in a bar, for example) high ISO modes may well produce acceptable results as long as you are aware of the quality limitations and stick with small prints.