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Sticking An Extender Onto A EF 70-200 F/4  
User currently onlineTripleDelta From Croatia, joined Jul 2004, 1096 posts, RR: 6
Posted (8 years 3 months 4 weeks 1 day 1 hour ago) and read 2740 times:
AIRLINERS.NET CREW
PHOTO SCREENER

I have a little question regarding the usage of extenders. Namely, I have a 20D with a 70-200 F/4 L as my "long" lens. In the majority of cases, the 200 mm gives enough zoom, but sometimes a few mm more wouldn't hurt.

A separate, good-quality lens in the 300-400 mm range is way too expensive for the amount of shooting I, for now, expect to do with it, so I'm looking at an extender. I'm leaning toward the 1.4x, effectively giving me a 98-280 mm lens if I did the math okay, which isn't at all bad.

In this post, the 70-200 F/2.8 with the 1.4x came out quite well, but what about the F/4?


No plane, no gain.
5 replies: All unread, jump to last
 
User currently offlineSulman From United States of America, joined Mar 2004, 2035 posts, RR: 33
Reply 1, posted (8 years 3 months 4 weeks 1 day ago) and read 2733 times:

I've been very happy with it:


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Photo © James Trimbee
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Slightly slower AF (very slightly slower) and you lose a stop, plus you've working at nearly 300mm at the long end with no IS, so steady hands required, but it's a great bit of kit.


James



It takes a big man to admit they are wrong, and I am not a big man.
User currently offlineFsgay From United States of America, joined Feb 2005, 23 posts, RR: 0
Reply 2, posted (8 years 3 months 4 weeks 15 hours ago) and read 2680 times:

I have this combo on my 10D. All else being equal, and as said before, the AF speed is very slightly slower, and its never particularly awesome to hand hold a nearly 300mm lens. However, I find that, since I have to shoot at a maximum of f/5.6 (especially at ISO100 or 200, where I usually shoot, to avoid noise), I limit myself to shooting with the extender only in situations where the light is bright enough for the decreased aperture, which, consequently, usually means your shutter speeds are high enough to not cause any problems, even sans-IS, and also that the AF has plenty of light anyway, and doesn't really seem to lag. For reference, the following shot was number 6-ish in a series I took of an AF A343 landing on 22L at BOS. It was very near sunset at the time, and every one of the shots is in focus (I was in AI Servo mode), and free of motion blur.


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Photo © Fred Gay




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User currently onlineTripleDelta From Croatia, joined Jul 2004, 1096 posts, RR: 6
Reply 3, posted (8 years 3 months 4 weeks 14 hours ago) and read 2670 times:
AIRLINERS.NET CREW
PHOTO SCREENER

Thanks for the replies guys.

I thought that the lack of IS would be a problem, but it's no big deal, and with a little practice the problem could be reduced. The slower AF won't be much of a problem as well, judging from the pics, since anyway, an object far enough to require 280 mm can be tracked long enough for the AF to do the work. And, again with some practice... time to add the extender to my wish list  biggrin .



No plane, no gain.
User currently offlineSleekjet From United States of America, joined Jul 2001, 2045 posts, RR: 22
Reply 4, posted (8 years 3 months 3 weeks 6 days 21 hours ago) and read 2620 times:

Before I acquired the 100-400, I used the 70-200 f/4 with a Sigma 1.4x. Very, very pleased with the results.


II Cor. 4:17-18
User currently offlineAndrewUber From United States of America, joined Jul 2003, 2528 posts, RR: 41
Reply 5, posted (8 years 3 months 3 weeks 6 days 17 hours ago) and read 2603 times:

Just don't try to stuff a 2.0x on the end of the 70-200 F4 L. Norman Camera told me it could be done - and maintain autofocus - but it didn't.

Anyone wanna swap a 2.0 for a 1.4 or 1.6???

Drew



I'd rather shoot BAD_MOTIVE
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