QUOTE(toda_erika_II @ Sep 21 2013, 04:36 PM)
Oh didn't see that photo at all.
QUOTE(Andrewtst @ Sep 21 2013, 05:07 PM)
And I Don't know what onion bokeh you talk about also, I only know some lens cannot generate circle bokeh but Hexagon bokeh. But for me both got it nice moment actually.
You are looking at mobile camera not DSLR lens, bokeh output is by how many blade inside the lens [...]
I may not have been that clear with my statement, or maybe you missed the photo.
My comment has nothing to do with the shape, how round, how hexoganish etc. the bokeh is. Again, refer to the image below.

It is to do with the texture within the bokeh itself. Compare between the Tamron and the Nikon. What do you see? The Nikon's bokeh is smooth and milky. The Tamron's bokeh on the other hand, has a similar texture to that of a sliced onion, hence the term "Onion Bokeh". See embedded image below in the spoiler for that of a sliced onion to see the similarity.
» Click to show Spoiler - click again to hide... «
Now, referring back to the image taken from the Vietnamese website, ignoring the shape of the bokeh (center bokehs are round, bokehs on the sides will be different).
» Click to show Spoiler - click again to hide... «
Viewing the image in the spoiler, you can see especially in the center bokeh, there are clear evidences of the Onion textures.
I hope this is clear now. I understand the mechanics of bokeh, how round it is dependent on the aperture blades etc., which is a whole different issue. I am talking about the texture of it. Not its shape.
QUOTE(Andrewtst @ Sep 21 2013, 05:07 PM)
[...] don't you think you hope too much? Thanks it can given you some bokeh effect as it is just a mobile phone.
Actually, I would rather it not have the bokeh if it is going to be the onion ones. LOL.
It is one reason I ended up paying extra for a 24-70mm 2.8L even though the Tamron is much cheaper. It gets really messy and dirty. But of course that's subjective. One person's poison is another person's perfume.
Edit: To place the onion photo into a spoiler so as to not affect the post size.
This post has been edited by Areas Elysian: Sep 22 2013, 12:56 AM