Icoz, Evrim wrote:
Hi Peter,
105 vs 135 really does not make that much of a difference imho for portraits
purposes. both of these are slow lenses for portrait work.
28-135 is not really sharper then 28-105. or even my Tokina 28-80 2.8. All
of them have advantages and disadvantages. I have all three of these lenses.
I will keep the Tokina 2.8 since it is 2.8 but still debating the 28-105 vs
28-135.... IS is really nice to have, but then 28-105 is so much cheaper and
it is lightweight!
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Hi Evrim,
I disagree, the 30mm gives you a bit more working distance from your
subject. Its nice when you want to be bit further from a person. Also IS is
invaluable in low light situations when you want that extra DOF.
As to sharpness, its the old saga again and again. Check out the list below
which are the test results from Photodo comparing the 28-105mm v. 28-135mm
IS. In every case the 28-135IS is sharper and has a bit less less
distortion throghout the range.
28-105mm Weighted MTF for 28 mm: f3,5 0,62, f8 0,78
28-135mm Weighted MTF for 28 mm: f3,5 0,73, f8 0,74
28-105mm Weighted MTF for 50 mm: f4 0,69, f8 0,82
28-135mm Weighted MTF for 50 mm: f4,5 0,81, f8 0,82
28-105mm Weighted MTF for 105 mm: f4,5 0,74, f8 0,79
28-135mm Weighted MTF for 85 mm: f5,6 0,80, f8 0,79
28-135mm Weighted MTF for 135 mm: f5,6 0,70, f8 0,73
28-105mm Average Weighted MTF: 0,75 Grade: 3,3
28-135mm Average Weighted MTF: 0,77 Grade: 3,5
28-105mm Weighted MTF 10 lp/mm: 0,85
28-135mm Weighted MTF 10 lp/mm: 0,86
28-105mm Weighted MTF 20 lp/mm: 0,70
28-135mm Weighted MTF 20 lp/mm: 0,72
28-105mm Weighted MTF 40 lp/mm: 0,46
28-135mm Weighted MTF 40 lp/mm: 0,48
28-105mm Distortion: -4,74% - -4,23%
28-135mm Max distortion: -4,83% - 3,7%
If you are happy with the 28-105mm so be it. If you start talking about it
being smaller and better for travel, for that matter so is a point & shoot
wo why are you carrying an SLR.
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