03-27-2012, 08:57 AM
[quote name='iggykh' timestamp='1332825345' post='17084']
thanks for the info.
Would you say that 28mm f1.8 prime on my 600d could be the lens i need?
My intention is to shoot indoors and sometimes in dimmed light.
Trying to avoid using flash.
[/quote]
The 28mm f1.8 needs to be stopped down a bit to get good results, so it only gains you one stop at most. If 28mm is a focal length that suits your usage, it can be an option.
Of course, the Sigma 17-50mm f2.8 will already do a much better job than the 15-85mm. It will be 1 stop to 2 stops faster over the focal ramge they both cover, which means twice to 4 times as fast an exposure time.
How fast an exposure time you need depends on the shot. People talking, being together, eating, you can shoot with lower speeds than the mentioned 125th sec. It all depends on the movement of the people. And totally freezing all movement is not always wanted, as it makes images static.
So, it depends on the ISO setting m(and your 600D does very well with higher ISO settings, so ISO 800 or 1600 should be no problem), the situation, the effect you are after and a lot on your experience.
Just about any lens will be better though... an f2.8 zoom, a faster prime. The Sigma 30mm f1.4 HSM could be an alternative to the 28mm f1.8 you mentioned.
thanks for the info.
Would you say that 28mm f1.8 prime on my 600d could be the lens i need?
My intention is to shoot indoors and sometimes in dimmed light.
Trying to avoid using flash.
[/quote]
The 28mm f1.8 needs to be stopped down a bit to get good results, so it only gains you one stop at most. If 28mm is a focal length that suits your usage, it can be an option.
Of course, the Sigma 17-50mm f2.8 will already do a much better job than the 15-85mm. It will be 1 stop to 2 stops faster over the focal ramge they both cover, which means twice to 4 times as fast an exposure time.
How fast an exposure time you need depends on the shot. People talking, being together, eating, you can shoot with lower speeds than the mentioned 125th sec. It all depends on the movement of the people. And totally freezing all movement is not always wanted, as it makes images static.
So, it depends on the ISO setting m(and your 600D does very well with higher ISO settings, so ISO 800 or 1600 should be no problem), the situation, the effect you are after and a lot on your experience.
Just about any lens will be better though... an f2.8 zoom, a faster prime. The Sigma 30mm f1.4 HSM could be an alternative to the 28mm f1.8 you mentioned.