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Old Mar 19, 2003, 11:03 PM   #1
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Default 100-400 fast focusing?

I'm looking to take wild life photographs, mostly birds. I'm interested in the 100-400mm f/ 4.5/5.6L USM AF IS. I'd use it on either a D60 (when the used price drops) or a 10D (when the feeding frenzy stops.)

Optically that lens rates very highly on photozone. Would you all agree? Does it auto focus fast enough for pics of small, flighty birds? The biggest complaints about the equivalent Nikon lens is that it isn't their USM-equivalent... and is amazingly slow (some say the slowest AF lens the make.) I assume this is better, but how good is it?

The only other reasonable option I see is the 300mm f/4L IS USM and a TC. I can't afford the f2.8, so that is out. Does anyone know how the 400 at f5.6 compares to the 300 + a 1.4TC?

Thanks!
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Old Mar 21, 2004, 5:47 PM   #2
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I just bought that lens today. I've heard that it produces incredible results. I'll let you know for sure in a few days.
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Old Mar 21, 2004, 6:48 PM   #3
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I have read a bit about just the combo you're talking about. The consensus that I read is that the 300 f/4 with the TC is not as sharp as the 400 f/5.6 but not positive about the 100-400. Don't you have the 400mm f5/6 now?

On a similar note, the 300 f/2.8 with TC is highly touted.

Personally, I'm looking at options to get into the 500+mm range but the prices aren't too attractive.
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Old Mar 21, 2004, 6:59 PM   #4
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Well, if you buy the D60 your lens will have the 1.6x focal plane multiplier applied to it. So...

400 * 1.6 = 640mm >=]
You'll have fun with that I'm sure. albeit you lose 60mm's of closeness but... I'm not going to gripe about that one
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Old Mar 21, 2004, 7:33 PM   #5
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A 400mm lens on a 1.6 factor camera does not a 640mm lens make. It's still only a 400mm lens and it will still only achieve a focal magnification of 400mm. The difference is that the chip is smaller than the 35mm film plane and therefore the image will appear larger ... similar to taking the same picture with a 400mm lens on a 35mm film camera and enlarging it to 640mm.

For a good explaination: http://www.luminous-landscape.com/tu...dslr-mag.shtml
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Old Mar 21, 2004, 8:15 PM   #6
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um...
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Old Mar 21, 2004, 9:44 PM   #7
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Ohenry, I did a lot of reading on 300 F4 IS with TC vs the 400 F5.6 lens. The conclusion I drew is that it is a tossup between the two in terms of quality. Since that is the case, and since I already have the 1.4x TC, and since the 300 has IS and the 400 does not, I'll get the 300 F4 eventually. But first a 24-70L :-)

If you're interested, I can dig out some links for you. Never mind, I found them:

300 Review

http://www.wlcastleman.com/equip/rev...00mm/index.htm

Rattle in 300/f4 IS?

http://forums.naturephotographers.ne...1&m=5506011781


300+1.4 vs 400

http://forums.naturephotographers.ne...1&m=5326018381
http://forums.naturephotographers.ne...1&m=6906040941
http://forums.naturephotographers.ne...1&m=2756019841
http://forums.naturephotographers.ne...1&m=6376008841
http://forums.naturephotographers.ne...1&m=1076008841

300 + 2.0

http://forums.naturephotographers.ne...1&m=9186048841

Barthold
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Old Mar 21, 2004, 9:46 PM   #8
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Um.... who dug up this old post? eric has graced the world with many a picture from his 100-400L!
Did no-one notice the original post was from march 2003? :lol:
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Old Mar 21, 2004, 10:24 PM   #9
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Thanks Barthold, but my interest in long lenses goes beyond the 300 + TC ... I want to get out to at least 500

I have the 70-200L 2.8 with 1.4TC, considering the 2 TC as an interim long lens option until I can figure out what I want for birds.

Yesh, Gamdalf...I THOUGHT he already had that lens...guess I should have looked at the date :roll:
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