Dan,
Considering lens speeds, there is often a misconception about f/3.5 versus
f/4. They are only 1/3 stop apart, not the half stop many think it is.
That's right, f/3.5 is only 1/3 stop faster. For me, f/3.5 versus f/4
wouldn't be a consideration.
I would be sorely tempted to take the 50/1.8 regardless of what other
lenses you might pack along with it. It is a standard lens and clearly
faster than any other you have; 1-1/3 stop more speed than the f/2.8 28mm.
If you have any thought you might want to shoot some available light
indoors or outdoors in low light, then find room for the 50mm.
Be careful with ISO 400 outdoors. It can get you into trouble under "sunny
f/16" conditions. It will put you into f/16 @ 1/500th or f/11 @ 1/1000th
and preclude narrowing the depth of field. Given the lens speeds you have,
under general outdoor daytime conditions, the ISO 200 should be fast
enough. Again, what is the likelihood of wanting to do something under low
lighting levels? That would be the major reason for using an ISO 400.
-- John
At 16:54 8/3/00 , Dan Lau wrote:
>With all this talk about zoom lenses and travel, I have a
>question about "what lens to carry" again. I have a
>limited collection of lenses, and I want to travel light.
>I have the following lenses: 28/2.8, 50/1.8, 135/3.5,
>28-48/4, 35-70/3.5-4.5 and 75-150/4. Now my questions:
>
>1) For general travel photography (i.e., a lot of outdoor
> sightseeing and walking around), if I am already
> bringing my 35-70/3.5-4.5, is there any reason to bring
> the 50/1.8 as well?
>2) As an additional lens, would you recommend bringing the
> 28/2.8 (or is it too close to the 35) or should I bring
> the 28-48/4 zoom to cover the whole range (or is there
> too much overlap with the 35-70)?
>3) The only other lens choice I have is either the 135/3.5
> or the 75-150/4. Should I just bring the two zooms or
> will I be disappointed with the slow speed?
>
>I generally use ASA 200 print film, but I can switch to 400
>film if you think it will match the slow lenses better.
>Thanks for any comments.
> -Dan
>
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