# of aperture blades on 28-135 IS ?

[photoreu]

Just wondering if someone could tell me how many aperture blades the

28-135 IS lens has? I'm looking to get this lens next and I'm hoping

for an improvement over my 50 f/1.8's little pentagons in the

background. I took some christmas portraits and the OOF tree in the

background was covered with them. :)

[guy_badman]

6 blades

 

Further info here: http://www.canon.co.uk/for_home/product_finder/cameras/ef_lenses/zoom_lenses/EF_28135mm_f3556IS_USM/index.asp?specs=1

[jack_rabin]

Me thinks it's not the absolute number of aperture blades, but

rather whether the lens is designed with circular aperture or not.

The little hexagons is not the reason I got rid of my copy of

Canon 28-135 IS, the slow f/stop was.

Canon's 24-70L 2.8 has a circular aperture, as does the

70-200L f/2.8 IS (not the other 70-200s). Strangely enough, I

believe the non-L mid-priced 55-200mm has a circular aperture,

which may be a better choice if you want to shoot "low priced

bokah." I also believe the Tamron 28-75 f/2.8 di lens has a

circular aperture, and opens wide enough to get the effect. You

can check the manufacturers web sites.

Circular apertures are not a killer deal making feature, but I

anecdotally believe they give me nicer pictures, with a "creamier

textured" 3-D fall off between focus and OOF areas. Can't think of

different vocabulary to describe what I see.

[photoreu]

Thanks for the responses.

 

Jack I know exactly what you mean. I'm actually planning on getting the 24-70 when the budget allows.. but for now, I'm going to make do with the 28-135 for my mid range zoom. I'm going to be making a rather large investment in lenses soon but right now I just need something quick (cant afford those L zooms just yet).. anyway.. thanks for the input!