Canon 70-200mm lens with a Canon Extender EF 2X III versus Canon 100-400mm lens

Which is better for astrophotography,
a Canon 70-200mm lens with a Canon Extender EF 2X III or Canon 100-400mm lens

JMR66 wrote:
Which is better for astrophotography,
a Canon 70-200mm lens with a Canon Extender EF 2X III or Canon 100-400mm lens
If you refer to Canon 70-200mm 2.8L IS II USM + Extender 2x III, then you'd get f/5.6 all over the focal length range vs. the EF 100-400 f/4.5-5.6L IS USM (meaning you'll get a bit more of light at the short telephoto end when using the 100-400)
Both combinations are very sharp, but I think the 100-400 is a bit sharper when compared to 70-200 2.8L II + extender 2x III, noticeable if you use full frame DSLRs.
If you use APS-C DSLRs, then I'd suggest going for the 70-200 2.8L IS II USM because you'll get more than 1 f-stops of light if you shoot from 70 to 200mm (without the Extender 2x III) compared to the 100-400, and the sharpness is really amazing (better than 100-400 in both Full Frame and APS-C cameras)
Regards
HD Cam Team
Group of photographers and filmmakers using Canon cameras for serious purposes.
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Canon EF 70-200mm f/4 L USM not as sharp as myCanon EF 100-400mm f/4.5-5.6L IS

Hi can't seem to get a sharp a image with my 70- 200 as I can with my 100-400mm. Should I be getting just as sharp photos with both lenses. I still have a warranty with best buy.
Solved!
Go to Solution.

What are your shooting conditions? If you were below 1/400 or so the IS on the 100-400 could make a significant difference. Try a controlled test, on a tripod, same settings, IS off.

Canon 100-400 mm serie L

Does canon make a 100-400 mm serie L lens that, does not push or pull for the distance to get the at 400 mmm?
I love my 70-200 mmm that twist distance, does 100-400 mm serie L come that too or is it just push and pull model?

The "push/pull" Canon 100-400mm is not right or wrong. It is just different. You may like it or not. But I would suggest you try it first. I find it an easy to use lens and I use it on nearly every wedding I photograph.
The EF 70-300mm f4-5.6 L is another candidate you might consider if you don't go for the push/pull.
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Which is the better lens for wildlife, sport action canon 70-200 is usm ii series L or Canon 100-400

Which would be a better for wildlife and sport action Canon 70-200 mm is usm ii serie L f/2.8 or Canon 100-400 mm f/4.5-5.6?

On what camera? It makes a big difference depending upon whether you are using full frame or a crop camera.
Also depends upon the particular sports and type of wildlife most commonly involved, how much reach you might need. Outdoor, daytime sports vs indoor and nightime sports is another key factor.
On a crop camera a 70-200 is generally a lot more usable than it is on full frame, for sports and wildlife. An f2.8 lens and 70-200 might be ideal for indoor sports even with a crop camera. It also might be plenty for large game that can be pretty closely approacted. But for small and more shy wildlife, sports on a larger playing field, you'll more likely need the 100-400. But as an f4.5-5.6 lens that's going to be more of a daytime-only lens.
The 100-400mm is unusual in that it's a push/pull zoom. This can be particularly fast to use and makes the lens popular among photograhers shooting fast moving subjects such as birds in flight and air shows.
If you give serious consideration to the 70-200/2.8 IS II in combination with teleconverter EF 2X III, I'd suggest renting and trying them toghether first. The reason is that a stronger 2X teleconverter has more effect on image quality than a weaker TC. The specific combination of the 70-200 Mark II lens and the 2X Mark III TC is pretty darned good.... better than the combo earlier versions of each item. But whether or not it's up to your expectastions is a judgment call only you can make. So it might be wise to rent before you buy, just to be sure.
If instead you start to take a hard look at the 100-400mm, once again you might want to rent it and give it a try. Some people really like the push/pull zoom design. Some don't. (I'm one of the latter... but to be fair this is largely an old prejudice from trying to use that type of zoom in the past, long before IS. I always found push-pull zooms hard to get a steady shot with.... But the 100-400's IS goes a long way toward solving that problem.)
And those two really aren't your only choices.
Personally I use a pair of crop cameras (7D), most of the time one fitted with a 70-200, and the other fitted with a 300/4 IS, sometimes in combination with an EF 1.4X II teleconverter. Or, when I don't need to be mobile and can set up a tripod, I'll use a 300/2.8 IS, both by itself and with EF 1.4X II or 2X II teleconverters.
Another possibility is two lower cost lenses... such as a 70-200/4 IS in combination with a third party lens such as the Sigma 120-400 OS or 150-500 OS. Those lenses are considerably less expensive than the 70-200/2.8 II and the 100-400, respectively. You might be able to afford both and still find they meet your needs very well.
I use the 70-200/4 IS, as well as a copy of the first version of the 70-200/2.8 IS, and they are excellent lenses too. No doubt about it, the 70-200/2.8 IS Mark II is top of the heap and exceptionally good... but rest assured those other 70-200s are no slouches.
If using a full frame camera, for large field sports and more distant, smaller wildlife.... better start saving up. You're going to need one or two of the super telephotos, such as the new EF 200-400/4L IS 1.4X that I'm saving up for!
p.s. By the way, if not already doing so you might want to try Back Button Focusing. It's a very popular technique among sports/action and wildlife photographers. I've been using it for years for virtually everything I shoot, and can't imagine using any other method now.
Alan Myers
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"Walk softly and carry a big lens."
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Extender with 100-400mm lens.

I have heard and read both - The 1.4x extender will and will not allow autofocusing with a 7D and a 100-400mm lens. Does anyone know?

At the 100mm end of the zoom range, the lens becomes an f/6.3 -- and probably your camera can focus at f/6.3 ... but that's pretty much the limit. At the 400mm end of the range (and in fact even at mid-zoom levels) the 7D wont be able to auto-focus. The 5D III and 1D X have working phase-detect AF at f/8, but not the 7D. Pretty much all bodies hit the limit at f/5.6 (but usually you can sneak in f/6.3), but only those two bodies have working auto-focus at f/8.
If there is enough light, it may be able to focus in live-view mode becasue that uses constrast-detection AF, rather than the phase-detect AF points and if there's enough light and contrast it may be able to work, but contrast-detection isn't as fast so if this is for sports or action photography then that's probably not worth persuing.
You could always rent a 1.4x from one of the many rental agencies and give it a try to see if it works for you.
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Will the extender ef 2x iii work with the ef 28-300mm 3.5/5.6L. IS USM

Will this work with the ef 28-300mm 3.5/5.6L IS USM? Just came from the motorcycle races over the weekend and wish I had a little more length, are there any focusing issues when these two pieces are paired together? Thanks for the information.

ebiggs1 wrote:
The Canon 2x will not fit on wide angle zooms, standard zooms, wide angle primes or many third-party lense.
If you buy a 2x teleconverter and are going to use it on any lens other than the ones listed below, you are probably not going to be happy with the result, if it works at all:
- Canon 70-200mm f/2.8L
- Canon 70-200mm f/2.8L IS II
- Canon 200mm f/2 IS
- Canon 300mm f/2.8 IS or IS II
- Canon 400mm f/2.8 IS or IS II
- Canon 500mm f/4L IS or IS II
- Canon 600mm f/4L IS or IS II
The 200 f/2.8L would also be a nice lens to use with a 2X extender.
http://trulandphoto.zenfolio.com/
http://trulandphoto.blogspot.com/

Canon 100-400 mm zoom reliability

Much has been written on this popular lens, but the experience of Arthur Morris, a Canon contract photographer, has me most concerned about a purchase. In the first chapter of his book on bird photography (viewable on the Cornell Lab of Ornithology site), he talks about his own experience with this lens, and says that, of the people he has contact with through his seminars and such, about one-half of owners have needed to send this lens back to Canon for repair.
I am wondering what is the experience of people on this forum who have owned this lens. I would appreciate hearing both good and bad tales. The lens has just a wonderful focal-length range for wildlife photography.
Thanks!
Edward1064

I have owned one for 5+ years now and it, also, has worked perfectly. I am a person that equipment has to do the job. In the course of that, it must endure whatever it needs to. Now, yes, this is an expensive lens and I do take pretty good care of it, but if it doesn't do what I want, why have it? That kind of serves on how I use my stuff. The lens has been stellar.
I used to have the 400mm f5.6 prime. I sold it to get the 100-400mm. My reasoning is this, most zoom lens' get used at the long end of their ranges far more than they do in small or middle ranges. I am no exception and find I am at 400mm most of the time. The advantage is that, maybe the few times, you want or need shorter focal lengths, it's there. Who buys a 100 mm f4.5 anyway? Nobody unless it comes attached to a 400mm zoom!
Some complain with the push-pull design but I have had no issues with mine. I can recommend it without hesitation.
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Would a EF 100-400mm f/4.5-5.6L IS USM be a good addition to a Canon EOS Rebel T3?

Would a EF 100-400mm f/4.5-5.6L IS USM be a good addition to a Canon EOS Rebel T3? I do already have a Canon zoom lens EF 75-300 lens in addition to the standard 18-55 lens.

I rented one and brought it with me to Italy to use on my T1i. It's a good lens and it takes great photos. The downfall is that it's very large & heavy. We had to drag it around in it's own separate carrying bag while we walked around Italy. It was great to take a shot of the top of the Duomo in Florence with it, when we were 2 miles away. We really couldn't find anything that we could use it on up close.
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Canon EF400mm f5.6 versus Canon EF100-400mm f4.5-f5.6

Hi folks
Having attended the MotoGP at Valalencia last week, and using my 7d with a 70-200mm with 1.4 extender. I have realised I need a longer lens for such events. I was wondering what lens would be better, ie sharpness. I know the 100-400mm has the benefit of the zoom, but I don't want to lose image quality if I can help it.
John
Solved!
Go to Solution.

This topic has been debated many times at both Photography on the Net (POTN) and Fred Miranda (FM) for years with no clear winner. I suggest you forget about choosing one or the other based only on IQ under ideal circumstances. You're not going to see the difference doing what you do unless you have extremely good panning skills. The prime is marginally sharper but so what? It limits what you can shoot because you can't keep changing position so you'll miss opportunities, some of which may be that "money shot". I shoot a different form of action, and based on the expectations of those viewing motorsports photos I strongly suspect the ideal photos will have slow enough shutter speeds for blurred wheels (or spokes) & background but a rider & bike that very crisp. Meeting those requirements will cancel any difference between the 2 lenses IQ wise 99% of the time.
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Canon 70-200mm lens with a Canon Extender EF 2X III versus Canon 100-400mm lens

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