其實三支鏡頭光圈是全開,35mm/f2開盡光圈也可以很銳利,但50mm/1.8盡開光圈就有点out of focus,至於18-70mm就不過不失,我覺得35mm/f2光圈最好就是f2.8-f4.0,至於50mm/f1.8光圈最好在那裡?有沒有c Hing 知道?請賜教!作者: house007 時間: 2006-11-24 15:32
>> 但50mm/1.8盡開光圈就有点out of focus,
it should not be happened!! may be yr hand not steady, or the len has problem. Every len must able to focus on all the f. value. (off course, the quality is different!!)
In general, when using the max. aperature value of the len, best quality can't be delivery.
Ususally, the best quality is in the middle aperature value of the len (e.g. f7.1, f8, f9)
try again, using the same len with different apeature value!! 作者: happycamel 時間: 2006-11-25 01:03
Thanks for sharing 作者: justforfun 時間: 2006-11-26 01:24
Depth of field would be affected by changing the value of 光圈, but should not affect the quality of the lens... again, IMHO. 作者: m249_hk 時間: 2006-11-29 16:38