[Peterbob]

i want to buy a marco lens for taking butterfly photo
which one is better?
is 180 too big because i am using 350d
is long 150 enough?
please help me choose
thanks

[kingkonghk]

150好d, 大光圈d, 雖然用唔到, 不過好過冇

[Peterbob]

why can't use the f/2.8 in 150mm?

[Philippe]

影微距景深極淺.用f2.8可能只影到一點清,其他全部out focus.通常都用到f16以上.
不過你可以用f2.8影人.

[teddykwan]

我用緊180mm marco影蟲,發覺180mm都好以唔夠用,
莫講話用150mm,大光圈用不著.焦長比較好用.

[kingkonghk]

150同180實際用時差唔遠, 150短d輕d, 光圈大d, 價位就差唔多

[tam_dominic]

The short focal length the more depth of field which is essential for macro shots.
Larger aperture allow easier focus though F16 is frequently used.

I prefer 150mm. Add 1.4X if necessary for butterfly shots.