« on: October 13, 2012, 03:03:42 AM »
Ok, so this is extremely tempting. I have been meaning to upgrade for sometime but waiting for the right moment (in terms of price) to pull the trigger.
I have the following gears right now:
1) Canon 60D
2) Canon 24-70mm f2.8L (MK I)
3) Canon 50mm f1.8 II
4) Tokina 11-16mm f2.8
1) Landscape, Architecture 2) Portrait, Group Portraits 3) Still-life, 4) Often in low-light situations, often dont have control over lighting situation. 5) Any kind of interesting surface textures for use in 3D Modeling.
So one of the reason I bought 24-70 is the f2.8 aperture in the normal zoom range, since 60Ds ISO performance isn't something to write about. And I avoid going above 400 ISO. I hate the noise. Another reason is the shallow depth of field. Now if jump in on this BnH deal, I have 2 options
Keep 24-70 and sell 24-105 OR
Keep 24-105 and sell off the 24-70.
My question is if I keep, 24-105 I will lose the shallow depth of field that I get from f2.8. How significant is the loss in shallowness from f2.8 to f4. I can try taking shots in f2.8 and f4 with my 24-70 and see the approximate difference, but if any of you out there who had already faced similar situation may be able to shed some light and would be of great help. Also, is 24-105 comparatively sharper across the range? Let's say both lens are calibrated to work with the same body. I am guessing I will bump up the ISO higher if I end up getting the 5DIII to get acceptable shutter speed to freeze subject, plus IS helps.
So there, hope I made sense. Is it better to keep the 24-70 or 24-105 in terms of shallow dof, sharpness. Oh, in the future I know I will get the 70-200 so I am not thinking the reach as a factor that much (even though switching to FF).
OR just wait for another one of those 2700-2800 5DIII body only deal :S ? (bangs head against the wall)!