Usefulness of IS lenses (was: Good-bye Pentax)

2003-03-17 Thread jerome

Some guy wrote:

 As I have said before, IS is fine for lazy photographer 
 and special applications like shooting from a boat or something) 
 but I use a tripod almost all the time and IS lenses would 
 add nothing but cost to my outfit

If it adds nothing to *your* outfit, then that's one thing, but I don't think 
that justifies statements about the usefulness of such lenses to other 
photographers (or statements about their work ethics, for that matter). But 
lets get to some practical examples here... He also wrote:

 If you want the latest and greatest USM, IS etc, 
 go out and get it, but it really won't make you a 
 better photographer. 

I vehemently disagree. In 3 of my shoots this month I found myself in some sort 
of vehicle (sometimes car, sometimes a bus-type thingy) driving thru an animal 
safari.  Good luck setting up a tripod (or even getting use out of a monopod) 
in such a scenario.  As for window-mounted rigs for stability you either have 
to (a) mount and unmount every time you go from one side of the bus to the 
other, or (b) have all of your equipment in duplicate. (a) will lead to missed 
shots, and (b) is just stupid g. Accordinly, all of my shots were handheld 
[bracing myself against whatever I could, of course]. Consequently, I was 
forced to go with my much smaller 70-200 1:2.8 zoom lens most of the time 
simply because the Pentax 300mm f2.8 lens was just too much to handle for me 
handheld given its weight [hey, I'm no Paul Stenquist! King of handheld 
photography g].  The point? Well, given such situations which I would call 
*far* from a special application for you usual wildlife photographer... you'd 
be hardpressed to convince me that IS technology would not have improved (1) 
the number of keeper shots with reasonable sharpness,  and /or (2) improved the 
sharpness of each given photo.  

I mean, it's definitely not going to make the photo worse, right? so it can 
only make it better (or have no effect at all... which is likely at high 
shutter speeds and unlikely otherwise) for handheld shots. And correct me if 
I'm wrong, but in my book, more usuable (and hence salable) photos per photo 
shoot = better photographer.

As for shoots when I *do* get to set up a tripod... well, suppose I am hiking 
thru some state or national park and I come across something worthwhile to 
shoot (that also happens to have legs). Experience has taught me to take a shot 
or two FIRST, and THEN think about setting up the tripod (or risk not getting a 
shot at all). So if IS technology improves the quality of that initial shot 
(which will occasionally be the only one you get), then again... please remind 
me of the argument against it?

In the past two weeks, I also covered two local events in Atlanta, GA: the St. 
Patricks Day parade, and a Family Kit flying day.  Both where on overcast / 
rainy days, and the latter was quite early in the morning. In such dynamic 
environments, I'll again take an IS lens over a tri- / mono- pod anyday. But 
since I don't have such lenses for my Pentax [and refuse to use film faster 
than 100 ISO], in the meantime I thank God for fast, light-weight (and third 
party!) lenses.

My .02 + tax,

   jerome, a not-so-lazy photog
   
  
ps..

I apologize if all of the above arguments were already given in the 
recent USM/IS threads. I've chosen to skip those so I haven't a clue as to 
what has been said.




Re: Usefulness of IS lenses

2003-03-17 Thread Herb Chong
in brilliant sunlight with high speed film. that has its own compromises.

Herb.
- Original Message - 
From: Gregory L. Hansen [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, March 17, 2003 14:21
Subject: Re: Usefulness of IS lenses


 Some people on the newsgroups have reported and linked to tack sharp
 pictures of birds in flight, the camera handheld while panning.  I don't
 think you can always count on a tripod to get that kind of shot.




Re: Usefulness of IS lenses

2003-03-17 Thread Gregory L. Hansen
Herb Chong said:

 in brilliant sunlight with high speed film. that has its own compromises.

 Herb.
 - Original Message -
 From: Gregory L. Hansen [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Sent: Monday, March 17, 2003 14:21
 Subject: Re: Usefulness of IS lenses


  Some people on the newsgroups have reported and linked to tack sharp
  pictures of birds in flight, the camera handheld while panning.  I don't
  think you can always count on a tripod to get that kind of shot.

Near sunset.

Well, all I can say is I just got the lens and immediately I got
incredible photos of birds flying, mode 2 of course. I don't think I
ever got a sharp one panning inflight shots with my old 300 without
IS. But my first roll with 100-400 IS I got many good ones. J. D.

When I've asked, people have generally reported 2-3 stops improvement when
handheld, but also some longer times than that, like 1/4 second at 50mm
and 1/8 second at 70mm.  I asked because I wondered if IS was more of a
gimmick.  But damn, it seems to be real, and people are getting sharp
shots with it that they couldn't have gotten otherwise.