Re: stalking animals

2003-07-15 Thread Gregory L. Hansen
Mark Cassino said:

 It's sheer speculation on my part since I don't have DSLR, but I'd theorize
 that the cropping effect in a DSLR that boosts the effective focal length
 of the lens would not similarly boost the effects of vibration on sharpness.

If a point source of light were smeared out over 0.1% of a full-frame
picture, it would be smeared out over 0.15% of the cropped-out digital
sensor.  Unless you compose it so that whatever was in the full frame is
also entirely in the digital frame, but then that smear of light would
cover a physically smaller distance on the sensor.



Re: stalking animals (was: Re: On cheerleading)

2003-07-15 Thread Lon Williamson
Mark, do you get any keepers at 800mm?  And what
do you suspect to be the culprit?  Tripod/head
combination in use?
Mark Cassino wrote, in part:
 - at my present skill level I can 
consistently get sharp results with 680mm - at 800mm my results drop off 
dramatically.  So I figure I should be able to get the same results in a 
DSLR at an effective 1020mm (680 x 1.5).



Re: stalking animals (was: Re: On cheerleading)

2003-07-13 Thread Mark Cassino
At 10:28 AM 7/11/2003 -0400, Christian wrote:


Written by the man with a 400/2.8 and teleconverters  HAR! :-)
(I know, I know, you get really close to your subjects, evidenced by
frame-filling shots of songbirds)
I guess I should of seen that one coming :-0

But seriously - in this day of 500mm IS lens with 2x teleconverters and 
DSLRS with a 1.5x magnification factor there are a lot of birds shooting 
with the equivalent of a 1500mm rig.  A while back I saw what appeared to 
be a fine bird image taken with an effective 1700mm setup.  Now THOSE are 
long lenses!

- MCC
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Mark Cassino
Kalamazoo, MI
[EMAIL PROTECTED]
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Photos:
http://www.markcassino.com
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Re: stalking animals

2003-07-12 Thread Eactivist
 Animals around my parts are exceptionally shy and its extremely rare that
close encounters with wild animals can be experienced.


 Pål

I almost (not quite) wish that were true here. The deer wander all over this 
housing development because they know somehow (through years of experience, I 
think) that they cannot be hunted here. Some people really hate them because 
they eat the patio plants, etc. I don't hate them, I like them, but sometimes 
they get too bold.

Tonight I came home and couldn't enter the condo for about 20-30 minutes 
because a buck was standing on the walk way in front of it. I shooed him. No good. 
I went around the corner and approached from another direction. Still there, 
still staring at me. I retreated so he couldn't see me. Went and looked again. 
He'd moved about two feet forward in my direction, still staring at me. This 
happened about three times. Staring and staring at me, even though I was 
hiding part of the time. Finally, I gave up. Went back to my car and started the 
engine fully intent on driving down to the end and shining the headlights in his 
eyes. Well, the car was close enough to where he was. And he didn't like the 
engine starting, so finally he moved.

Too bold, sort of challenging me. Not sure bucks EVER attack people unless 
extremely provoked, but maybe then. However, this guy had some antlers on him, 
four pointer, I think, and I simply did not want to risk it.

OTOH, it does make getting deer pictures somewhat easier. ;-)

(Note that the deer here are a little larger than a large goat would be.)

Marnie aka Doe 



Re: stalking animals (was: Re: On cheerleading)

2003-07-11 Thread Christian

- Original Message - 
From: Mark Cassino [EMAIL PROTECTED]


 Nice shot, Jostein!

 Personally, I think that there is too much emphasis put on longer lenses,
 autofocus, etc.

Written by the man with a 400/2.8 and teleconverters  HAR! :-)
(I know, I know, you get really close to your subjects, evidenced by
frame-filling shots of songbirds)

Christian



Re: stalking animals (was: Re: On cheerleading)

2003-07-11 Thread Jostein
At 18:05 10.07.2003 -0400, you wrote:
Nice shot, Jostein!


Thanks, Mark.

Personally, I think that there is too much emphasis put on longer lenses, 
autofocus, etc.  The technological solution is only part of the equation - 
you'll get better shots  by getting close simply because you are not 
shooting through so much air, with the attendant effects of haze, thermal 
distortion, etc.
Absolutely.
However, there's a right focal length for everything. 300-400mm is pretty 
good for larger mammals, but I'd prefer to have your setup with a TC for 
birds. And a 200 macro for insects...:-)

Cheers,
Jostein 



Re: stalking animals (was: Re: On cheerleading)

2003-07-11 Thread Jostein
At 22:39 10.07.2003 +0100, Bob wrote:

Nice shot! I took this one with a lousy LX+A 400/5.6, beanbag on top
of a car (I wasn't exactly stalking).
www.web-options.com/impala.jpg
Wow. Nice mood, Bob. Lovely shot.

I put stalking in the title of the thread, but using cars isn't exactly 
stalking in the strictest meaning of the word, is it?
However, cars are quite good for reducing the fear-circle of animals.

Cheers,
Jostein


Re: stalking animals

2003-07-11 Thread Pål Jensen
Christian wrote:

Written by the man with a 400/2.8 and teleconverters  HAR! :-)
(I know, I know, you get really close to your subjects, evidenced by
frame-filling shots of songbirds)



REPLY:

It is amazing how close you need to be a small bird to fill the frame even with a 
600mm with 1,4X converter. 
Most people have too high expectations about what a long lens can do. Even those of us 
who actually do use very long lenses are constantly being surprised. At least I am. 
Animals around my parts are exceptionally shy and its extremely rare that close 
encounters with wild animals can be experienced. 


Pål




Re: stalking animals (was: Re: On cheerleading)

2003-07-10 Thread Bob Walkden
Hi,

Thursday, July 10, 2003, 9:58:44 PM, you wrote:

 I always thought that one needs the absolute top tech to get those wildlife
 shots. IS, USM, whatever. Then I realised that I hadn't really tried to
 stalk animals. So this spring and summer I have been doing my first attempts
 at real species photography. One of my proudest moments was when I got this
 shot of a roedeer:
 http://oksne.net/public/roedeer.jpg
 Tech. data: FA*400/5.6, MZ-S, Provia 400F, 1/125s at f/5.6, leaned on car
 window.
 Got nine exposures before it strolled off.

 More than anything else, this convinced me that I, myself, have been the
 limiting factor all along. Not Pentax equipment.

 Both humbling and encouraging, I suppose... :-)

Nice shot! I took this one with a lousy LX+A 400/5.6, beanbag on top
of a car (I wasn't exactly stalking).

www.web-options.com/impala.jpg

-- 
Cheers,
 Bobmailto:[EMAIL PROTECTED]



Re: stalking animals (was: Re: On cheerleading)

2003-07-10 Thread Mark Cassino
Nice shot, Jostein!

Personally, I think that there is too much emphasis put on longer lenses, 
autofocus, etc.  The technological solution is only part of the equation - 
you'll get better shots  by getting close simply because you are not 
shooting through so much air, with the attendant effects of haze, thermal 
distortion, etc.

- MCC

At 10:58 PM 7/10/2003 +0200, Jostein wrote:

I always thought that one needs the absolute top tech to get those wildlife
shots. IS, USM, whatever. Then I realised that I hadn't really tried to
stalk animals. So this spring and summer I have been doing my first attempts
at real species photography. One of my proudest moments was when I got this
shot of a roedeer:
http://oksne.net/public/roedeer.jpg
Tech. data: FA*400/5.6, MZ-S, Provia 400F, 1/125s at f/5.6, leaned on car
window.
Got nine exposures before it strolled off.
More than anything else, this convinced me that I, myself, have been the
limiting factor all along. Not Pentax equipment.
Both humbling and encouraging, I suppose... :-)

cheers,
Jostein
- - - - - - - - - -
Mark Cassino
Kalamazoo, MI
[EMAIL PROTECTED]
- - - - - - - - - -
Photos:
http://www.markcassino.com
- - - - - - - - - -