Wow, 15-85 sharper than 24-105 4L?

Started Mar 21, 2012 | Discussions
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Shift7 Junior Member • Posts: 29
Wow, 15-85 sharper than 24-105 4L?

Hello, made comparison shots. Camera 50D. 15-85 shot as is, 24-105 was even micro af via cable and pc via lifeview on pc screen. i always raved by my 15-85, but wouldnt believed that it will beat 24-105 even at f5,6. shots were taken from tripod, and 70 mm focal length and f5,6.

Comparison shots:
http://www.photobucket.lt/image.php?id=AE27_4F6A5626

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007peter
007peter Forum Pro • Posts: 10,382
I find EF-S lens are "generally" sharper than EF (FF) on APS-C body

You photo show off well my own experience. When I compare:

  • EF-S Canon 17-55 f/2.8 vs EF 24-70 f/2.8

  • EF-S Canon 60mm f/2.8 vs EF 100 f/2.8 Macro

I reach the same conclusion. The EF-S is ever so slightly sharper. Not Big, but just enough extra sharpness

Shift7 wrote:

Hello, made comparison shots. Camera 50D. 15-85 shot as is, 24-105 was even micro af via cable and pc via lifeview on pc screen. i always raved by my 15-85, but wouldnt believed that it will beat 24-105 even at f5,6. shots were taken from tripod, and 70 mm focal length and f5,6.

Comparison shots:
http://www.photobucket.lt/image.php?id=AE27_4F6A5626

 007peter's gear list:007peter's gear list
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meatatarian Junior Member • Posts: 30
Re: I find EF-S lens are "generally" sharper than EF (FF) on APS-C body

One thing you need to keep in mind is that EF lenses are designed for full-frame cameras, whereas EF-s lenses are designed for crop sensors. EF-s sensors have SIGNIFICANTLY higher pixel density than any Canon full frame camera. Lenses resolve to a certain sharpness, and that sharpness requirement is significantly higher for EF-s sensors. The pixel size on a 5dII is 6.4µm vs. 4.3µm on the modern Canon crop sensors. Less resolving power is therefore needed for the EF lenses.

When you look a 100% crop on a crop sensor camera with 1 EF and 1 EF-S lens, you're comparing apples and oranges. Some EF lenses work brilliantly on EF-S sensors (70-200L, 50 f/1.8, ...), while others will work no better than the $150 18-55 kit lens.

I am a strong proponent of buying EF-S lenses for crop sensor cameras, since they are usually cheaper and smaller. Just buy the full-frame zooms like the 17-40, 24-70, and 24-105 once you actually do upgrade to full-frame.

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Peter Kwok
Peter Kwok Senior Member • Posts: 2,276
Agree 100%

meatatarian wrote:

I am a strong proponent of buying EF-S lenses for crop sensor cameras, since they are usually cheaper and smaller. Just buy the full-frame zooms like the 17-40, 24-70, and 24-105 once you actually do upgrade to full-frame.

As a happy owner of EF-s 17-55 & 10-22 lens, I agree 100%. I will get the 24-105 once the price of the 5DMk3 drops.
--
Peter Kwok
http://www.pbase.com/peterkwok
WYSIWYG - If you don't like what you get, try to see differently.

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Eric X10 Forum Member • Posts: 78
Re: Wow, 15-85 sharper than 24-105 4L?

Shift7 wrote:

Hello, made comparison shots. Camera 50D. 15-85 shot as is, 24-105 was even micro af via cable and pc via lifeview on pc screen. i always raved by my 15-85, but wouldnt believed that it will beat 24-105 even at f5,6. shots were taken from tripod, and 70 mm focal length and f5,6.

Comparison shots:
http://www.photobucket.lt/image.php?id=AE27_4F6A5626

My eyes are not so good and maybe they're getting worse but after looking at the comparison, IMHO, letters from the 24-105mm showed more sharpness than the 15-85. I could read from the former better than the latter. If you zoom in, the letters are bolder in the 24-105 than in the 15-85. I may be wrong. Just thought I might share these thoughts.

kidcharles Regular Member • Posts: 245
Re: Wow, 15-85 sharper than 24-105 4L?

Eric X10 wrote:

My eyes are not so good and maybe they're getting worse but after looking at the comparison, IMHO, letters from the 24-105mm showed more sharpness than the 15-85. I could read from the former better than the latter. If you zoom in, the letters are bolder in the 24-105 than in the 15-85. I may be wrong. Just thought I might share these thoughts.

I disagree. I concur with the original poster that the 15-85 is somewhat sharper. It's particularly noticeable on the part of the label that says "Open and Use." Of course this is one test with two particular copies of these lenses but going just by these images, the 15-85 one is definitely sharper. The "boldness" you see may be because the 24-105 image is slightly darker.

Legion5 Senior Member • Posts: 1,047
Re: Wow, 15-85 sharper than 24-105 4L?

The 24-105mm is a FULL FRAME lens. People just don't seem to understand that concept. Just because it has an L in the name doesn't make it the end all of quality.

The 18-55mm KIT lens has more resolution than the 17-40mm f/4.0 L on crop.

The 24-105mm has 70% more resolution than the 15-85mm on full frame, but with both on crop the 15-85mm is the clear winner of course because it's designed for crop. A full frame lens needs to be more than twice as good as a dedicated crop lens to match it.

Don_D
Don_D Forum Pro • Posts: 16,828
Yep... and my 17-55 EFS is sharper still..

I did have to get a second copy of the 15-85 as the first copy was soft on the right side.

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Suave Senior Member • Posts: 1,220
Re: Wow, 15-85 sharper than 24-105 4L?

All it tells me that with this particular pair of lenses, on this particular body, before microadjustment, with underexposure, single shot, at this particular focal length, and did you move the target in the process (?) 15-85 does a better job.

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carlk Forum Pro • Posts: 15,940
Re: Agree 100%

+1. Even the reason one might buy a full frame in the future is not valid. Get the best lens for what you're shooting now is the wisest thing to do.

Peter Kwok wrote:

meatatarian wrote:

I am a strong proponent of buying EF-S lenses for crop sensor cameras, since they are usually cheaper and smaller. Just buy the full-frame zooms like the 17-40, 24-70, and 24-105 once you actually do upgrade to full-frame.

As a happy owner of EF-s 17-55 & 10-22 lens, I agree 100%. I will get the 24-105 once the price of the 5DMk3 drops.
--
Peter Kwok
http://www.pbase.com/peterkwok
WYSIWYG - If you don't like what you get, try to see differently.

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MAC Forum Pro • Posts: 13,210
Re: Agree 100%

I just got a 60d = 15-85 is

$3500 isn't worth FF - $4300 for the heavier kit

WOW- sharp across the frame even wide open, light weight, and true 4 stop IS with 24 -136.

best all around 1 lens set-up I know of for the value per dollars with LR3.6 that does all the corrections-- I got my combo for $1500

I'm a believer

now eyefi, ipad, and OCF next

carlk wrote:

+1. Even the reason one might buy a full frame in the future is not valid. Get the best lens for what you're shooting now is the wisest thing to do.

Peter Kwok wrote:

meatatarian wrote:

I am a strong proponent of buying EF-S lenses for crop sensor cameras, since they are usually cheaper and smaller. Just buy the full-frame zooms like the 17-40, 24-70, and 24-105 once you actually do upgrade to full-frame.

As a happy owner of EF-s 17-55 & 10-22 lens, I agree 100%. I will get the 24-105 once the price of the 5DMk3 drops.
--
Peter Kwok
http://www.pbase.com/peterkwok
WYSIWYG - If you don't like what you get, try to see differently.

 MAC's gear list:MAC's gear list
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Astound Regular Member • Posts: 158
15-85 on crop sharper than 24-105 on FF?

I hired a 5D mkII with a 24-105 a while ago. After finishing my shoot I did a bit of a test against my 60D and 15-85 lens.

I thought the 15-85 seemed sharper at similar 'equivalent' focal lengths. The 5D dealt with noise much better (which was my main reason for the test). I was very suprised at the sharpness results though.

I may have the images somewhere. If so, I'll try and post them.

Dale Buhanan Veteran Member • Posts: 4,013
Re: Wow, 15-85 sharper than 24-105 4L?

I also have a 24-105L and a 15-85. In the comparison shots that I took, I found that in the overlapping focal lengths at 24mm and 35mm, the 15-85 had the edge, It was sharper, with less CA, and less distortion. At 50mm it was pretty much a toss up. The lenses looked identical, and you couldn't tell which lens took which picture. But at the long end, at 70mm and 85mm and of course 105mm, the 24-105L had the edge. It was sharper, and had less CA and distortion than the 15-85.

In summary: At the wide end, the 15-85 wins on all counts. Middle range, they are very close to the same. At the long end, the 24-105L wins on all counts -- sharper, less CA and less distortion.

Color was ever so slightly different between the two lenses, with the 24-105L being slightly warmer, but that is easily evened out in PP.

Shift7 wrote:

Hello, made comparison shots. Camera 50D. 15-85 shot as is, 24-105 was even micro af via cable and pc via lifeview on pc screen. i always raved by my 15-85, but wouldnt believed that it will beat 24-105 even at f5,6. shots were taken from tripod, and 70 mm focal length and f5,6.

Comparison shots:
http://www.photobucket.lt/image.php?id=AE27_4F6A5626

-- hide signature --

kind regards
Dale

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MAC Forum Pro • Posts: 13,210
Re: Wow, 15-85 sharper than 24-105 4L?

the 24-105 IS is known to be a FF lens. The 15-85 is for hi mpxl 1.6

you are right, the 24-105 has soft issues beyond the center at 24mm - see below

but the crop vs ff - the 15-85 wins 106 - 136 mm fov -it is longer fov by 36 mm so it should be worse everywhere - right? NOT

and the 15-85 has a later, better, 4 stop IS

and the 15-85 is lighter and a great combo with 60d handheld

and it is smooth low sound for video

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=675&Camera=474&Sample=0&FLI=0&API=1&LensComp=355&CameraComp=453&SampleComp=0&FLIComp=0&APIComp=0

Dale Buhanan wrote:

I also have a 24-105L and a 15-85. In the comparison shots that I took, I found that in the overlapping focal lengths at 24mm and 35mm, the 15-85 had the edge, It was sharper, with less CA, and less distortion. At 50mm it was pretty much a toss up. The lenses looked identical, and you couldn't tell which lens took which picture. But at the long end, at 70mm and 85mm and of course 105mm, the 24-105L had the edge. It was sharper, and had less CA and distortion than the 15-85.

In summary: At the wide end, the 15-85 wins on all counts. Middle range, they are very close to the same. At the long end, the 24-105L wins on all counts -- sharper, less CA and less distortion.

Color was ever so slightly different between the two lenses, with the 24-105L being slightly warmer, but that is easily evened out in PP.

Shift7 wrote:

Hello, made comparison shots. Camera 50D. 15-85 shot as is, 24-105 was even micro af via cable and pc via lifeview on pc screen. i always raved by my 15-85, but wouldnt believed that it will beat 24-105 even at f5,6. shots were taken from tripod, and 70 mm focal length and f5,6.

Comparison shots:
http://www.photobucket.lt/image.php?id=AE27_4F6A5626

-- hide signature --

kind regards
Dale

 MAC's gear list:MAC's gear list
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mermaidkiller Regular Member • Posts: 443
Re: Agree 100%

MAC wrote:

I just got a 60d = 15-85 is

$3500 isn't worth FF - $4300 for the heavier kit

WOW- sharp across the frame even wide open, light weight, and true 4 stop IS with 24 -136.

For me the same. I thought about a 5d3 but $3500 for body only is too steep for me as well.

I got a 7d + 15-85 and the lens produces razor sharp images. Of course if I had a FF body I'd use the 24-205 as standard lens, but the 15-85 has more zoom range as 24-105 = 15-65 crop equivalent.
Hopefully Canon will release a 24-135L lens as a FF equivalent of the 15-85.

BTW according to this site the 15-85 wins slightly on the most wide angle side:

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=355&Camera=453&Sample=0&FLI=0&API=0&LensComp=675&CameraComp=0&FLIComp=0&APIComp=0
--

Canon EOS 7
Canon EF-S 15-85 f/3.5-5.6
Sigma 10-20 f/4-5.6
Canon EF 85 f/1.8
Canon EF 50 f/2.5 Macro
-------
Canon Powershot S100

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Suave Senior Member • Posts: 1,220
Re: Wow, 15-85 sharper than 24-105 4L?

You did notice that those 24-105 test shots were taken on a FF body, right? And the corner softness comes from the parts of the lens that would never have been utilized by a crop body?

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MAC Forum Pro • Posts: 13,210
Re: Wow, 15-85 sharper than 24-105 4L?

of course I see this. I have both crop and FF bodies.

The 24mm FOV is better with the 15-85 IS.

The 106 - 136 FOV is better with the 15-85 IS

Suave wrote:

You did notice that those 24-105 test shots were taken on a FF body, right? And the corner softness comes from the parts of the lens that would never have been utilized by a crop body?

 MAC's gear list:MAC's gear list
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MAC Forum Pro • Posts: 13,210
Re: Agree 100%

had there been a 5d3 that was packaged with a 24-135 4 stop IS F4 L for $3500 for that kit, that is where I'd be right now.

mermaidkiller wrote:

MAC wrote:

I just got a 60d = 15-85 is

$3500 isn't worth FF - $4300 for the heavier kit

WOW- sharp across the frame even wide open, light weight, and true 4 stop IS with 24 -136.

For me the same. I thought about a 5d3 but $3500 for body only is too steep for me as well.

I got a 7d + 15-85 and the lens produces razor sharp images. Of course if I had a FF body I'd use the 24-205 as standard lens, but the 15-85 has more zoom range as 24-105 = 15-65 crop equivalent.
Hopefully Canon will release a 24-135L lens as a FF equivalent of the 15-85.

BTW according to this site the 15-85 wins slightly on the most wide angle side:

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=355&Camera=453&Sample=0&FLI=0&API=0&LensComp=675&CameraComp=0&FLIComp=0&APIComp=0
--

Canon EOS 7
Canon EF-S 15-85 f/3.5-5.6
Sigma 10-20 f/4-5.6
Canon EF 85 f/1.8
Canon EF 50 f/2.5 Macro
-------
Canon Powershot S100

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Dale Buhanan Veteran Member • Posts: 4,013
Re: Wow, 15-85 sharper than 24-105 4L?

I completely agree.

MAC wrote:

of course I see this. I have both crop and FF bodies.

The 24mm FOV is better with the 15-85 IS.

The 106 - 136 FOV is better with the 15-85 IS

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kind regards
Dale

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