March 30, 2017, 02:44:28 PM

Author Topic: Canon EF 11-24mm f/4L USM  (Read 102256 times)

privatebydesign

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Re: Canon EF 11-24mm f/4L USM
« Reply #345 on: January 15, 2017, 11:43:31 PM »
Thanks Jack and Click,

For those interested in the EXIF, the cat was 11mm @ f5.6, the car was 14mm @ f20 deliberately for the starburst.

And for those that say the dof of an 11/14mm at f4 is 'massive' I beg to differ. Here are a couple of 100% crops from the cat picture @ f5.6. Clearly not even the entire cat is covered by the dof let alone the entire scene.

I've wondered about this in landscapes trying to have everything from a close object back, in focus.  So, if you were focused at infinity how far would that feline have to be to appear in focus?  Also, when not using a tripod it's hard to judge if infinity is actually in sharp focus.

Jack

Caution - objects may be closer than they appear.  How close was the cat?

It really depends point of focus, particularly near MFD of 11".   If your subject is at 12" the DOF is 9" to 20" at f5.6 or 7" to 43" at f/11 on my DOF calculator.   If you move your subject out to 30", the DOF is 15" to infinity at f/5.6.  At f/11 you can DOF is 12" to infinity as long as your point of focus is more than 18".

Nonsense.

Those figures all presuppose an 8" x 10" print viewed from 12", that is just not how we view images nowadays. For instance I have a 27" screen, if I view at 100% the image is scrollable at 5616/109, or 51" at a mere 22" viewing distance. As magnification goes up dof goes down so I have way less dof than your calculator estimates.
Too often we lose sight of the fact that photography is about capturing light, if we have the ability to take control of that light then we grow exponentially as photographers. More often than not the image is not about lens speed, sensor size, DR, MP's or AF, it is about the light.

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Re: Canon EF 11-24mm f/4L USM
« Reply #345 on: January 15, 2017, 11:43:31 PM »

dcm

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Re: Canon EF 11-24mm f/4L USM
« Reply #346 on: January 15, 2017, 11:50:35 PM »
Thanks Jack and Click,

For those interested in the EXIF, the cat was 11mm @ f5.6, the car was 14mm @ f20 deliberately for the starburst.

And for those that say the dof of an 11/14mm at f4 is 'massive' I beg to differ. Here are a couple of 100% crops from the cat picture @ f5.6. Clearly not even the entire cat is covered by the dof let alone the entire scene.

I've wondered about this in landscapes trying to have everything from a close object back, in focus.  So, if you were focused at infinity how far would that feline have to be to appear in focus?  Also, when not using a tripod it's hard to judge if infinity is actually in sharp focus.

Jack

Caution - objects may be closer than they appear.  How close was the cat?

It really depends point of focus, particularly near MFD of 11".   If your subject is at 12" the DOF is 9" to 20" at f5.6 or 7" to 43" at f/11 on my DOF calculator.   If you move your subject out to 30", the DOF is 15" to infinity at f/5.6.  At f/11 you can DOF is 12" to infinity as long as your point of focus is more than 18".

Nonsense.

Those figures all presuppose an 8" x 10" print viewed from 12", that is just not how we view images nowadays. For instance I have a 27" screen, if I view at 100% the image is scrollable at 5616/109, or 51" at a mere 22" viewing distance. As magnification goes up dof goes down so I have way less dof than your calculator estimates.

Sorry, I should have noted the settings on the calculator (blur spot of 30um).  I did add a YMMV and probably should have noted different settings would yield different DOF.  All I wanted to highlight was the difference in DOF based on the point of focus.
Shooting with Canon since 1982.

privatebydesign

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Re: Canon EF 11-24mm f/4L USM
« Reply #347 on: January 16, 2017, 12:06:25 AM »
No apology needed dcm.

I was just trying to illustrate the vast difference between what the calculators are calculating and how we are viewing images nowadays. And don't forget the subjective nature of dof, that wonderful phrase "within acceptable focus"!

It's interesting though, an 8"x10" image has a surface area of 80 square inches, a 51"x34" image, even scrollable, is 1,734 inches square, 22 times the area, therefore the viewing distance as per the dof calculator should put us at 61", over five feet, from the screen.
Too often we lose sight of the fact that photography is about capturing light, if we have the ability to take control of that light then we grow exponentially as photographers. More often than not the image is not about lens speed, sensor size, DR, MP's or AF, it is about the light.

neuroanatomist

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Re: Canon EF 11-24mm f/4L USM
« Reply #348 on: January 16, 2017, 07:37:55 AM »
Nonsense.

Those figures all presuppose an 8" x 10" print viewed from 12", that is just not how we view images nowadays. For instance I have a 27" screen, if I view at 100% the image is scrollable at 5616/109, or 51" at a mere 22" viewing distance. As magnification goes up dof goes down so I have way less dof than your calculator estimates.

Nonsense. 

Your figures presuppose a computer monitor, and that is just not how we view images nowadays.  For instance, if I have an iPhone 6 that's a 4x2.25" image viewed from 14", so I have way more DoF than your reestimation of the original estimate estimates.

 ;D
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Jack Douglas

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Re: Canon EF 11-24mm f/4L USM
« Reply #349 on: January 16, 2017, 12:24:15 PM »
Nonsense.

Those figures all presuppose an 8" x 10" print viewed from 12", that is just not how we view images nowadays. For instance I have a 27" screen, if I view at 100% the image is scrollable at 5616/109, or 51" at a mere 22" viewing distance. As magnification goes up dof goes down so I have way less dof than your calculator estimates.

Nonsense. 

Your figures presuppose a computer monitor, and that is just not how we view images nowadays.  For instance, if I have an iPhone 6 that's a 4x2.25" image viewed from 14", so I have way more DoF than your reestimation of the original estimate estimates.

 ;D

I've always felt sorry for those not viewing on full size screens but now I understand the great advantage you have.  Always getting more DOF, Wow.... learn something new every day!

Jack 
6D   11-24 F4   24-70 F4   70-200 F2.8 II   300 F2.8 II   1.4X III   2X III   400 DO F4 II  1DX II

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bluenoser1993

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Re: Canon EF 11-24mm f/4L USM
« Reply #350 on: January 16, 2017, 11:09:25 PM »
What are your thoughts on it compared to any other wide angles you own?

Hope you had a nice time in France wile you were there.

I did have a nice time, although photography time was limited (I was there for a scientific conference).

Composition is challenging with the 11-24!  There were a few shots where I used the 11-24L and also the TS-E 17L for the same scene, and often ended up preferring the TS-E image.  Here's an example, the first with the TS-E 17 and the second with the 11-24 (I didn't actually process the latter, to remove flare etc.).

"Hôtel de ville de Tours"

EOS 1D X, TS-E 17mm f/4L, 8s, f/8, ISO 100

I'm not a fan of UWA distortion unless the foreground is something my mind doesn't have a preconceived notion of how it should look.  In this case the flowers have an unatural appearance, almost like they're blown over in a strong wind.  The TSE shot is amazing though.
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R1-7D

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Re: Canon EF 11-24mm f/4L USM
« Reply #351 on: February 08, 2017, 10:02:57 AM »
I absolutely love this lens. The more I use it, the more I feel like I am getting the hang of it. It's not easy to use. I've barely had it off my camera on my travels. Almost regret bringing my 24-70 with me.

Here's some shots from Bath, London, and Paris.
« Last Edit: February 08, 2017, 10:05:52 AM by R1-7D »
Cameras: 1DX II, Canon M. Lenses: EF 24-70mm f/2.8L II, EF 70-200 f/2.8L IS II, EF 100mm f/2.8L Macro, EF 85mm f/1.2 EFL II, 2X III, EF 11-24mm f/4L, Flashes MT-24 580EXII

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Re: Canon EF 11-24mm f/4L USM
« Reply #351 on: February 08, 2017, 10:02:57 AM »

Jack Douglas

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Re: Canon EF 11-24mm f/4L USM
« Reply #352 on: February 08, 2017, 07:24:59 PM »
R1-7D, I feel much like you and I don't have those wonderful subjects you're showing to shoot!  Lovely.

Jack
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Jack Douglas

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Re: Canon EF 11-24mm f/4L USM
« Reply #353 on: February 08, 2017, 07:27:49 PM »
Here is a recent 1DX2 shot at 21 mm on a frosty day.

Jack
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R1-7D

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Re: Canon EF 11-24mm f/4L USM
« Reply #354 on: February 08, 2017, 07:56:26 PM »
R1-7D, I feel much like you and I don't have those wonderful subjects you're showing to shoot!  Lovely.

Jack

Thank you for the complement! It's really a fun lens to use.
Cameras: 1DX II, Canon M. Lenses: EF 24-70mm f/2.8L II, EF 70-200 f/2.8L IS II, EF 100mm f/2.8L Macro, EF 85mm f/1.2 EFL II, 2X III, EF 11-24mm f/4L, Flashes MT-24 580EXII

R1-7D

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Re: Canon EF 11-24mm f/4L USM
« Reply #355 on: February 08, 2017, 07:57:14 PM »
Here is a recent 1DX2 shot at 21 mm on a frosty day.

Jack

This is really beautiful! Looks like a winter wonderland. Beautifully composed.
Cameras: 1DX II, Canon M. Lenses: EF 24-70mm f/2.8L II, EF 70-200 f/2.8L IS II, EF 100mm f/2.8L Macro, EF 85mm f/1.2 EFL II, 2X III, EF 11-24mm f/4L, Flashes MT-24 580EXII

Jack Douglas

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Re: Canon EF 11-24mm f/4L USM
« Reply #356 on: February 09, 2017, 01:51:13 AM »
Here is a recent 1DX2 shot at 21 mm on a frosty day.

Jack

This is really beautiful! Looks like a winter wonderland. Beautifully composed.

Thanks.  Here is a thought I've had.  I seem to prefer the 11mm shots of landscape when they are cropped with less height, more like a panorama.  It seems like that gives more emphasis to the fact that there is a very wide field of view and makes me imagine I'm scanning the view.  And I guess often it removes the sometimes less interesting expanse of sky when it's not contributing much.

Jack
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R1-7D

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Re: Canon EF 11-24mm f/4L USM
« Reply #357 on: February 09, 2017, 05:06:54 PM »
Here is a recent 1DX2 shot at 21 mm on a frosty day.

Jack

This is really beautiful! Looks like a winter wonderland. Beautifully composed.

Thanks.  Here is a thought I've had.  I seem to prefer the 11mm shots of landscape when they are cropped with less height, more like a panorama.  It seems like that gives more emphasis to the fact that there is a very wide field of view and makes me imagine I'm scanning the view.  And I guess often it removes the sometimes less interesting expanse of sky when it's not contributing much.

Jack

I think it's because when shooting at 11mm there's often just so much dead space in the frame -- with nothing interesting in the sky, or just too much of it, cropping it down in a panorama-esque style frame is not a bad idea. The lens is wide enough it practically is panorama! :)
Cameras: 1DX II, Canon M. Lenses: EF 24-70mm f/2.8L II, EF 70-200 f/2.8L IS II, EF 100mm f/2.8L Macro, EF 85mm f/1.2 EFL II, 2X III, EF 11-24mm f/4L, Flashes MT-24 580EXII

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Re: Canon EF 11-24mm f/4L USM
« Reply #357 on: February 09, 2017, 05:06:54 PM »

neuroanatomist

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Re: Canon EF 11-24mm f/4L USM
« Reply #358 on: March 29, 2017, 09:26:06 PM »
Went to a conference in Washington, D.C. last week, and had a couple of free blue hour/evenings to wander around the Capitol Mall area.  The 11-24L was ideal for the World War II Memorial.  First shot is the view from the east side, second shot is looking straight up inslde the Atlantic triumphal arch.

"From Sea to Shining Sea"

EOS 1D X, EF 11-24mm f/4L USM @ 11mm, 30 s, f/11, ISO 100

"WWII Memorial 'Atlantic' Arch"

EOS 1D X, EF 11-24mm f/4L USM @ 15mm, 15 s, f/11, ISO 100

As usual, click for larger.  Thanks for looking!
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Jack Douglas

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Re: Canon EF 11-24mm f/4L USM
« Reply #359 on: March 29, 2017, 10:17:24 PM »
Went to a conference in Washington, D.C. last week, and had a couple of free blue hour/evenings to wander around the Capitol Mall area.  The 11-24L was ideal for the World War II Memorial.  First shot is the view from the east side, second shot is looking straight up inslde the Atlantic triumphal arch.

"From Sea to Shining Sea"

EOS 1D X, EF 11-24mm f/4L USM @ 11mm, 30 s, f/11, ISO 100

"WWII Memorial 'Atlantic' Arch"

EOS 1D X, EF 11-24mm f/4L USM @ 15mm, 15 s, f/11, ISO 100

As usual, click for larger.  Thanks for looking!

Very nice.

Jack
6D   11-24 F4   24-70 F4   70-200 F2.8 II   300 F2.8 II   1.4X III   2X III   400 DO F4 II  1DX II

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Re: Canon EF 11-24mm f/4L USM
« Reply #359 on: March 29, 2017, 10:17:24 PM »