Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Forums  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear
Guest
Forums  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear
Register to forums    Log in

 
FORUMS Cameras, Lenses & Accessories Canon Lenses 
Thread started 23 Jun 2005 (Thursday) 03:33
Search threadPrev/next
sponsored links (only for non-logged)

MACRO LENS Q...

 
303
THREAD ­ STARTER
Mostly Lurking
13 posts
Joined May 2005
     
Jun 24, 2005 06:23 |  #16

Well im just looking for something to get me reasonably close to the subject untill i buy a macro lens. When i do buy a macro lens then the $469 will defenetly be in my price range. But right now its not, hence the extension tubes.

So for the meantime do you think it would be best if i use a 25mm or the kenko tube set (68mm combined) with my 25-80mm lens?

That kenko tube set is pretty much the max i can spend unfortunately... i'll have to import it. I stay in South Africa and the currency conversion is killing me!


Yours Sincerely
An amatuer looking to learn the way of the force!

  
  LOG IN TO REPLY
sid
Member
229 posts
Joined Jan 2005
     
Jun 24, 2005 07:30 as a reply to  @ 303's post |  #17

303 wrote:
Well im just looking for something to get me reasonably close to the subject untill i buy a macro lens. When i do buy a macro lens then the $469 will defenetly be in my price range. But right now its not, hence the extension tubes.

So for the meantime do you think it would be best if i use a 25mm or the kenko tube set (68mm combined) with my 25-80mm lens?

That kenko tube set is pretty much the max i can spend unfortunately... i'll have to import it. I stay in South Africa and the currency conversion is killing me!

Yeah, I think that in this case, going with the Kenko tube set might be your best option. You then have the option of 3 tubes and using them in various combinations depending on the situation.

EDIT: 303 check out this tutorial on using extension tubes with a 70-200mm lens:
http://www.natureswild​scapes.com/MacroPart3.​htm (external link)

This will give you an idea about the amount of magnificaiton you can get. Also see the other Macro tutorials here:
http://www.natureswild​scapes.com/NW2/index.h​tml (external link)




  
  LOG IN TO REPLY
303
THREAD ­ STARTER
Mostly Lurking
13 posts
Joined May 2005
     
Jun 27, 2005 02:04 |  #18

Thanks for the help man !!


Yours Sincerely
An amatuer looking to learn the way of the force!

  
  LOG IN TO REPLY
J ­ Rabin
Goldmember
1,496 posts
Likes: 1
Joined Aug 2004
Location: NJ
     
Jun 27, 2005 09:48 as a reply to  @ 303's post |  #19

Macro on the cheap...

303. The lenses you mention are not good for adapting to macro.
Is your 80-200 decent? A f/2.8 or f/4 max aperture. If not, buy something like a used Canon 100-300 with rear element USM focus for under $200. Unheralded good lens for macro conversion.
If you are going to do snakes, do not use extension tubes. You have to get too close (insufficient working distance), lose too much light, and lose ease of focus. Get a 77mm Canon 500D +2 diopter for $140. Mount it using a 58-77mm step up ring, or X-77mm, whatever your lens filter diameter is. Reason for the 77mm? Max flexibility with other lenses and resale value.
You can get almost 0.7x life size with a rig like this, and still use it tripod mounted, which is pretty amazing. The old 80-200 Canon gets you about 0.5 x.

Here's the ref:

http://www.bobatkins.c​om …graphy/eosfaq/c​loseup.htm (external link)

J.




  
  LOG IN TO REPLY
RAitch
Goldmember
Avatar
2,917 posts
Likes: 9
Joined Mar 2005
Location: Sarnia Ontario, Canada
     
Jun 27, 2005 11:31 as a reply to  @ post 618621 |  #20

303 wrote:
So to obtain a 1:1 magnification with a 200mm lens i would have to add on extension tubes untill i get 200mm. This would cost more than getting an extension tube of 50mm for my 50mm lens to get the same 1:1 magnification. But with the 200mm lens i wouldnt have to be as close to the subject to get the desired 1:1 magnification?

Is this correct?

But if it's a 80-200 lens, you'll only need 80mm of extension for 1:1 if it's zoomed all the way out.

You'll be able to get closer to your subject and get a closer image at 80. If you switch to 200mm, you gain working distance but will sacrifice zoom (how large the object apears).

I have the Kenko set and can use it with my 50 1.8 to pull out detail from sand. A pea would fill most of the image. When I use it with my 70-200, I can get gradually farther from the object but it won't be as close to 1:1.

Since it's 3 pieces, you can also create several levels of extension to get varying distances from your subject and thus changing how big the object appears.

I love them, they're great!

Also, with all of the problems I've had with the nifty fifty at 1.8 up close, that seems to go out the window when using these tubes. It seems (so far) that what I see is what I get when it comes to depth of field and focal points. Of course I'll do more testing, but so far I like the extension tubes.

As far as the Kenko tubes "not feeling strong enough" I haven't really found a problem. Even with the 70-200 on the end of all 3, it seems solid enough. That being said, I don't think I'd want to mount that on a tripod and use it for a while... unless I had a collar (which I don't).
The 50mm works great with it and you can get incredibly close. Take the big tube out and you're closer to the same results as the 70-200 with all of them on.


See Through The Lens (external link)

  
  LOG IN TO REPLY
sponsored links (only for non-logged)

3,212 views & 0 likes for this thread, 7 members have posted to it.
MACRO LENS Q...
FORUMS Cameras, Lenses & Accessories Canon Lenses 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Forums   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset   •  Home

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.58forum software
version 2.58 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is IoDaLi Photography
1274 guests, 128 members online
Simultaneous users record so far is 15,144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.