[klchan23]

Hi all,

Just wonder how to define a good blur out?
Some people suggest Leica's len can have better blur.
Is it ture?

Thanks

[Obi-Wan]

the best bokeh is minolta 135 stf

http://en.wikipedia.org/wiki/Bokeh
http://www.kenrockwell.com/tech/bokeh.htm

[h0001244]

咁係咪一般黎講，多幾片光圈葉都會靚D呢？

and

理論上，不計sharpness的話，每支鏡全開光圈會有最好散景？

[wesleyyau]

散景點先叫靚好主觀喎... 一張相靚唔靚都冇一定條件去define...
個人o黎講我會留意背景d 光源收成點... 同埋由主體到遠/近景o既順滑程度...
當然主體要特出得o黎清晰... 除非你特登想做效果令主體out of focus...
好多人會開盡光圈o黎影... 個背景blur 度乜都見唔到... 我自己會點都隱約見到遠/近景去拱托主體... 收少少光圈唔緊要... 有時成像更佳...

[Obi-Wan]

"散景點先叫靚好主觀喎" NOT really!

From kenrockwell
Poor Bokeh.

Good Bokeh


Sample of Minolta 135 STF
From http://www.the135stf.net (many many sample there)

[klchan23]

Thanks Obi-Wan...
Very useful link.

[h0001244]

咁係咪一般黎講，多幾片光圈葉都會靚D呢？

and

理論上，不計sharpness的話，每支鏡全開光圈會有最好散景？

[Obi-Wan]

咁係咪一般黎講，多幾片光圈葉都會靚D呢？ <===== YES, as more blades => more likely to be circular

and

理論上，不計sharpness的話，每支鏡全開光圈會有最好散景？<==== YES

[h0001244]

Thanks Obi-Wan Ching

[h0001244]

有無人知道最多片的葉片係幾多呢？出自邊支鏡呢？ (for 135 system計)

我暫時記得係9片，都幾common添