• Log in with Facebook Log in with Twitter
Photo

Canon EF 14-18mm f5-5.6 IS STM ;)


  • Please log in to reply
22 replies to this topic

#1 Brightcolours

Brightcolours

    Advanced Member

  • Members
  • PipPipPip
  • 4,090 posts
  • LocationThe Netherlands

Posted 13 July 2014 - 07:47 PM

Yesterday I bought a Canon EF-S 10-18mm f4.5-5.6 IS STM. First tested it on my EOS M to see if it had bad alignment or other issues, but all seemed quite ok.

 

I screwed off the mount, it encompasses the entire back of the lens, one single piece. I sawed off the part that protrudes into the FF mirror box too much (the mirror will hit it), sanded it down some more to be sure the back plate/mount clears the mirror, and screwed it back on again.

 

To my surprise, at 14mm the lens already does not vignet anymore (real vignetting I mean, not the light fall off variety). So, the lens is essentially a 14-18mm f5-5.6 lens on full frame! At 13mm black corners appear.

 

At 18mm f8:

gallery_10230_63_332082.jpg

 

And at 14mm f8:

gallery_10230_63_188637.jpg

 

Maybe not too bad, for a 269 lens that weighs a bit over 200 grams, and which has IS and silent AF? Makes for a nice light travel UWA I think. More testing this week (only finished adapting it 2 hours ago).



#2 Rover

Rover

    Advanced Member

  • Members
  • PipPipPip
  • 1,116 posts
  • LocationRussia

Posted 13 July 2014 - 10:08 PM

Beats the ubiquitous Samyang 14mm for this purpose I guess... Smaller, has AF, AE and IS, can use filters out of the box. Though this conversion is not for the faint of heart.

#3 Brightcolours

Brightcolours

    Advanced Member

  • Members
  • PipPipPip
  • 4,090 posts
  • LocationThe Netherlands

Posted 14 July 2014 - 09:18 AM

Well, it beats it with AF, AE and IS, can indeed use filters, and beats it with much lower distortion. But the Samyang beats this lens by a large margin in light fall off performance towards the corners, and corner sharpness (they get rather mushy with this lens). More test images to follow.



#4 Rover

Rover

    Advanced Member

  • Members
  • PipPipPip
  • 1,116 posts
  • LocationRussia

Posted 14 July 2014 - 12:00 PM

RE: sharpness: doesn't it get acceptable stopped down?



#5 Brightcolours

Brightcolours

    Advanced Member

  • Members
  • PipPipPip
  • 4,090 posts
  • LocationThe Netherlands

Posted 14 July 2014 - 06:16 PM

The overall sharpness gets pretty good, so it is not an issue for every shot. But the extreme corners remain mushy, a larger area at 14mm than at 18mm. I will post more images somewhere this week.



#6 popo

popo

    Advanced Member

  • Members
  • PipPipPip
  • 1,320 posts
  • LocationUK

Posted 14 July 2014 - 06:42 PM

Would also be interested to see the mod too!


dA Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.


#7 Rover

Rover

    Advanced Member

  • Members
  • PipPipPip
  • 1,116 posts
  • LocationRussia

Posted 14 July 2014 - 07:48 PM

My Sigma 14/2.8 never really gets sharp in the extreme corners of APS-H frame, and it's a full frame lens weighing 655 grams. My point is, maybe it's naive to await miracles from this EF-S lens that weighs 1/3 of the Sigma...

#8 Brightcolours

Brightcolours

    Advanced Member

  • Members
  • PipPipPip
  • 4,090 posts
  • LocationThe Netherlands

Posted 14 July 2014 - 07:58 PM

My Sigma 14/2.8 never really gets sharp in the extreme corners of APS-H frame, and it's a full frame lens weighing 655 grams. My point is, maybe it's naive to await miracles from this EF-S lens that weighs 1/3 of the Sigma...

I'll be sure to make an APS-H crop for you to judge.

 

Would also be interested to see the mod too!

I'll make a photo of the "mutilated" backside for you.



#9 Rover

Rover

    Advanced Member

  • Members
  • PipPipPip
  • 1,116 posts
  • LocationRussia

Posted 15 July 2014 - 06:07 AM

Thanks, though I'll hardly ever get around to replacing the Sigma - I'm too fond of it even though I'm only using it sporadically.



#10 Brightcolours

Brightcolours

    Advanced Member

  • Members
  • PipPipPip
  • 4,090 posts
  • LocationThe Netherlands

Posted 16 July 2014 - 12:21 AM

Thanks, though I'll hardly ever get around to replacing the Sigma - I'm too fond of it even though I'm only using it sporadically.

Just to get an idea:

the lens at 12mm (f8), cropped to 1.3x crop format (CA corrected in PS, standard DPP conversion):

gallery_10230_63_773376.jpg

 

Sorry, photozone seems to downsize the file to 1600 pixels wide max.

Later I will post a 13mm and 14mm 1.3x crop example.


  • Rover likes this

#11 Brightcolours

Brightcolours

    Advanced Member

  • Members
  • PipPipPip
  • 4,090 posts
  • LocationThe Netherlands

Posted 16 July 2014 - 12:26 AM

Would also be interested to see the mod too!

For the original back of the lens, scroll down a bit on this page:

http://www.northligh...n_efs10-18.html

 

The modded backside:

356032C7F8384781A562BBDA8C41B217.jpg

 

The left over pieces after the saw job, which I will later make a bit smaller, and glue together, to glue it neatly inside the hole that has been created, to make the back look right again:

75C3BA59BA1C42DE9364E4C9BA9DB320.jpg



#12 Brightcolours

Brightcolours

    Advanced Member

  • Members
  • PipPipPip
  • 4,090 posts
  • LocationThe Netherlands

Posted 16 July 2014 - 12:30 AM

14mm FF example (f8), in 3x2 format:

9F5EA6C39C2C41F8B028B0F6BBCC4B50.jpg

CA corrected in PS, standard DPP conversion.

 

14mm FF example (f8), in 16x9 LiveView format:

7634DDA905644692BAC89E9A2D35910F.jpg


#13 Rover

Rover

    Advanced Member

  • Members
  • PipPipPip
  • 1,116 posts
  • LocationRussia

Posted 16 July 2014 - 07:09 AM

Looks like there's a decent potential for modding. How much vignetting does the filter add?



#14 Brightcolours

Brightcolours

    Advanced Member

  • Members
  • PipPipPip
  • 4,090 posts
  • LocationThe Netherlands

Posted 16 July 2014 - 07:47 AM

I have not used any filter on it, and I don't think I will. A bit wide for pol. filter blue skies...



#15 Klaus

Klaus

    Chief Editor

  • Moderators
  • 4,832 posts
  • LocationSydney, Australia

Posted 16 July 2014 - 10:18 AM

What exactly is the point ? e.g compared to a Samyang 14mm ?


Chief Editor
photozone.de

#16 msowsun

msowsun

    Newbie

  • Members
  • Pip
  • 7 posts

Posted 16 July 2014 - 11:28 AM

For anyone who owns both APS-C and Full Frame cameras, it could be a single lens solution that adds Image stabilization. 

 

It gives you 10-18mm (16-28.8mm equiv) on crop and 14-18mm on FF.  The Image Stabilization can be handy for certain low light situations and also for video work. 



#17 msowsun

msowsun

    Newbie

  • Members
  • Pip
  • 7 posts

Posted 16 July 2014 - 11:44 AM

Looks like there's a decent potential for modding. How much vignetting does the filter add?

 

I have also modded mine for use on my 5D3 and there is a very slight amount of vignetting visibible in the corners at 14mm with a 67mm Hoya HD CPL

 

 

 

 

 

f/5 no filter

5D3_8514.jpg

 

f/8 no filter

5D3_8515.jpg

 

f/11 no filter

5D3_8516.jpg

 

f/5 with CPL

5D3_8517.jpg

 

f/8 with CPL

5D3_8518.jpg

 

f/11 with CPL

5D3_8519.jpg

 



#18 msowsun

msowsun

    Newbie

  • Members
  • Pip
  • 7 posts

Posted 16 July 2014 - 12:35 PM

Sorry, duplicate post, is there a way to delete this post? 



#19 Brightcolours

Brightcolours

    Advanced Member

  • Members
  • PipPipPip
  • 4,090 posts
  • LocationThe Netherlands

Posted 16 July 2014 - 01:18 PM

What exactly is the point ? e.g compared to a Samyang 14mm ?

As msowsun explains.

Wide angle on APS-C, will also be usable on FF.

It has AF, which Samyang does not do.

It has IS, which Samyang does not have.

It is cheaper and lighter (Samyang 552 grams, this lens 240 grams prior to mod), with IS suitable for video.

 

Samyang has better corners, this lens has better distortion.

 

On 1.3x crop, you get 12mm, 13mm, 15mm, 16mm, 17mm, 18mm, Samyang does not.

On FF you get 15mm, 16mm, 17mm, 18mm, Samyang does not.

 

And it is just cool to try.

 

Long enough list of points? ;)

 

Ok, one more then... Filters. If one wants to use an ND filter for instance.


  • Rover likes this

#20 msowsun

msowsun

    Newbie

  • Members
  • Pip
  • 7 posts

Posted 16 July 2014 - 06:43 PM

I did the mod on my EF-S 10-18 STM last night. Today I was playing around with my 5D Mk III and have discovered a slight problem........ 

 

For some odd reason it will not do Phase Detection AF on my 5D3. It works fine in LiveView using Contrast detection AF. When I mount the lens, the "One Shot" message on the top LCD goes to "M Focus". When I switch to LiveView or Video, it goes to "One Shot", but as soon as I go back to using the viewfinder, it goes back to "M Focus". Not only will it not AF, but there is also no green dot focus confirmation in MF mode.  

 

I also have a 18-135 STM that does the same thing when mounted on my 5D3. Both lenses work perfectly on my SL1/100D and also my old EOS 630 film camera. The EF 40mm STM also works perfectly on my 5D3.

 

I went down to my local "Henry's" camera store and they were nice enough to let me try my modded 10-18 on one of their 5D3's and sure enough it behaved exactly the same way. 

 

The 10-18 works with the 6D as reported by "Bright Colours", so I suspect this may have something to do with the advanced AF design of the 5D3. I also suspect that any other FF cameras with advanced AF (like the 1Dx) might also have the same problem with these APS-C STM lenses. 

 

5D3_8586.jpg






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users



© by photozone.de