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Occasional Contributor
Posts: 9
Registered: ‎11-18-2012

Re: Is the Canon 100-400mm a sharp enough lens?

Thank you. The fellow with whom she was in contest, was mesmerized by the reflection of the sun as well and while these are bouts of skill and not speed, he nearly stepped into her rapier.

 

IMG_9695.jpg

Gar Travis, asmp, CPS, ISAP

"Talent makes the photographer...
Canon makes the photographer memorable." ~ GT©
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Esteemed Contributor
Posts: 2,371
Registered: ‎11-14-2012

Re: Is the Canon 100-400mm a sharp enough lens?

That might have hurt, plus soiled the outfit.

"A skill is developed through constant practice with a passion to improve, not bought."
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New Contributor
Posts: 4
Registered: ‎11-13-2012

Re: Is the Canon 100-400mm a sharp enough lens?

[ Edited ]

I just got my 100 - 400L so I am still getting used to it. Honestly I thought this would never be my "walk-around" lens but after using it a few times, I love it and I belive I can produce better images with it than my old kit Canon 55 - 250mm which is a respectable lens. The bottom line is, I love this lens!

 

Here are a few images, they are probably not the sharpest in the world but good enough for me. 

IMG_7896.jpg

ISO  200 | 400 mm | f 5.6 | 1/1000 | not cropped | hand-held

 

IMG_7735.jpg

ISO 200 | 260 mm | f 5.6 | 1/1800 | not cropped | hand-held

 


» http://highrockphoto.com «
» EOS 7D | 100 - 400mm L | 10 - 24mm | Mac Pro | Lightroom 4 «
"Yes. Feet on earth. Knock on wood. Touch stone. Good luck to all." – Edward Abbey, Desert Solitaire
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Esteemed Contributor
Posts: 2,371
Registered: ‎11-14-2012

Re: Is the Canon 100-400mm a sharp enough lens?

I've got good news & bad news. The aircraft shot shows that you need more panning practice with it, which is VERY understandable. It's a much heavier lens than you're used to & it takes time to get the hang of panning. Also did you set the IS to mode 2 for that (off may have been a good choice too) ? If not that may also have hurt the potential sharpness 1/1000 should have provided. In an effort to help you improve try to remember that a good prop plane photo has prop blur making it look like it's actually under power flying through the sky. Unfortunately that takes both remembering to slow the shutter speed & even better panning skills, but with practice you'll get better. Also note that when a prop plane is landing the engines are usually spinning slower than on take offs

Enjoy your new lens, it should provide you with endless possibilities.

"A skill is developed through constant practice with a passion to improve, not bought."
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New Contributor
Posts: 2
Registered: ‎12-31-2012

Re: Is the Canon 100-400mm a sharp enough lens?

I am very unhappy with my 100-400.  Nothing is sharp.  I even sent it out for calibration and it isn't any better.  I am beginning to think it is back or front focusing although I am not knowledgeable enough to know how to test and fix it myself.  I have ruined several shots with it.

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Respected Contributor
Posts: 1,861
Registered: ‎12-02-2012

Re: Is the Canon 100-400mm a sharp enough lens?

Wow.  Hopefully he was not coming for you and your 100-400!

Scott

Canon 5d mk 4, Canon 6D, EF 70-200mm L f/2.8 IS mk2; EF 16-35 f/2.8 L mk. III; Sigma 35mm f/1.4 "Art" EF 100mm f/2.8L Macro; EF 85mm f/1.8; EF 1.4x extender mk. 3; EF 24-105 f/4 L; EF-S 17-55mm f/2.8 IS; 3x Phottix Mitros+ speedlites

Why do so many people say "FER-tographer"? Do they take "fertographs"?
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Esteemed Contributor
Posts: 2,371
Registered: ‎11-14-2012

Re: Is the Canon 100-400mm a sharp enough lens?

Lulu, this link might help.

 

http://photography-on-the.net/forum/showthread.php?t=857871

 

However having had a 40D which wasn't quite right here's the easy test BUT you must use a tripod & set it up correctly. You'll need 3 targets that are the same (preferable) such as soft drink cans. Set them up at so that they are staggered apart & front to rear but that all 3 can be seen from the camera position. Place the one on the left 1 foot further back than the one in the middle, & the one on the right 1 foot closer than the one in the middle. (You'll need some distance from camera to targets) Set the camera to center AF point only & the camera to Av & select f5.6. (wide open) & use 400 mm. Lock the AF on the middle target & take a few shots but pause in between them to let the camera settle.Move the outer targets further forward & backward but don't move the middle one. Shoot more samples. Download & examine. The center target should always be in focus but the others should be a bit soft, but if one of them is more in focus than the center one you have a camera problem  Repeat as necessary to determine if it actually focusing in front or behind where it says it is.

"A skill is developed through constant practice with a passion to improve, not bought."
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Respected Contributor
Posts: 1,861
Registered: ‎12-02-2012

Re: Is the Canon 100-400mm a sharp enough lens?

But see this sharpness comparison to the Canon 400 f/5.6 prime...

 

http://www.luminous-landscape.com/reviews/lenses/forgotten-400.shtml

 

That shows a fairly stark difference in sharpness.

Scott

Canon 5d mk 4, Canon 6D, EF 70-200mm L f/2.8 IS mk2; EF 16-35 f/2.8 L mk. III; Sigma 35mm f/1.4 "Art" EF 100mm f/2.8L Macro; EF 85mm f/1.8; EF 1.4x extender mk. 3; EF 24-105 f/4 L; EF-S 17-55mm f/2.8 IS; 3x Phottix Mitros+ speedlites

Why do so many people say "FER-tographer"? Do they take "fertographs"?
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Esteemed Contributor
Posts: 2,371
Registered: ‎11-14-2012

Re: Is the Canon 100-400mm a sharp enough lens?

Although I have used Luminous Landscape many times over the years & learned several valuable bits of information from it that test looks like the 100-400 used was out of calibration. I've examined hundreds of images from others & shot thousands with my own that are much sharper than they imply I will see. I've also followed many "which is better" threads over the years without ever seeing that big a difference between the 2. 

"A skill is developed through constant practice with a passion to improve, not bought."
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Occasional Contributor
Posts: 14
Registered: ‎11-16-2012

Re: Is the Canon 100-400mm a sharp enough lens?

[ Edited ]

This test came to the same conclusion as the Luminous Landscape test. A large number of 100/400L's were used to make sure results were accurate. The only lens or lens/extender  combo that scored worse than the 100/400L was the 70/200 f2.8 with 2x.

 

http://www.naturescapes.net/phpBB3/viewtopic.php?f=1&t=127089

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