Tom DelRosario wrote:
> I have been a cheapskate with my lenses, owning only a 50/1.8; 35-80/4-5.6 (came
>with my previous body); and a 75-300. After doing some comparisons between the 50
>and 35-80, I decided that I needed a new lens. Being a cheapskate, I got the
>28-105/3.5-4.5 II. (Still spent less on lenses than the typical L series lens).
>While I haven't done any direct comparisons yet, I do have some initial thoughts.
>
> * USM really doesn't seem that special. Yes, it is quieter than the 50/1.8, but it
>is no faster in achieving focus.
>
> * However, the manual focus ring acutally feels good. The other lenses I own have
>really crappy manual focus modes. With FTM and CF4, I can just leave the lens in AF
>mode when I want and manually focus if I find a good situation for it.
>
> * The general build quality of the lens seems to be much better than the other
>lenses I own. However, it is a little more difficult to mount onto the camera.
>Since it does mount, I don't think it is any problem, but it does require more force
>to get it on the camera.
>
> * With all the talk about the low-light focusing ability of the Elan 7/7e, I must
>say that I took some shots at a party this weekend. The lights were really low and
>it would have been impossible to manually focus in that light. With the 420EX on the
>camera, I was able to acheive focus with no more trouble than I would have had in
>daylight. Unfortunately, I didn't think to take off the flash to test the low-light
>focusing ability to make a direct comparison. My guess, though is that I would not
>have been able to focus without the blinking AF assist. The shoe-mounted flash is a
>great addition to the camera for that type of situation.
>
--
Comparing the focus speed of the 28-105 USM and the 50mm 1.8 isn't really an apples to
apples kind of comparison. A fixed focal length lens will generally focus faster than
a zoom, the shorter the focal length, the faster it will probably focus. Compare the
focus speed of the 28-105 to that of your 35-80. It is hard for me to say
definatively, since the only non USM lens I have is the 50mm 1.8, but you should see a
marked difference.
Skip
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Fine Art Black and White Photography
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Skip and Heather Middleton
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