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Macro photography - macro lens or extension tubes? - Page 3

post #21 of 31
Quote:
Originally Posted by robchaos View Post
As I have said from the start, Their are advantages and disadvantages to both. The main advantage to an extension tube being the cost. The macro lens is a purpose designed tool. If you think you will be taking a lot of close up photos, you will not beat the quality. Tubes are cheaper, but in most cases they remove a lenses ability to focus to infinity, they decrease your DOF, and they can potentially increase color aberrations and distortions (mostly around the edges of the image) when used with zoom lenses. Sorry to have a differing opinion than you dudemanppl...
main advantage to extension tubes to me is that they are extremely light weight.

btw you can always ebay a set of cheap extension tubes, i picked up a set for 6 bucks
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post #22 of 31
Quote:
Originally Posted by Danny1107 View Post
Hi guys, wanting to try out some macro shots of flowers and some other things

in abit of a dilema, should I go for a set of 3 extension tubes (12mm, 20mm, 36mm) or save for a macro lens?

would I notice a difference in quality? the price is a great difference between the tubes and lens though, I'd be getting the tubes WITH the contact points (after a quick look, priced around £50-£90 for the extension tubes with electric contact points)

I have used the screw in add on type macro lenses but they aren't brilliant...

currently have:
Nikon D5000
18-55mm VR lens
55-200mm VR lens
Might be able to find a second hand 100mm macro (older model) the glass is so
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post #23 of 31
Quote:
Originally Posted by robchaos View Post
haha right, so troll means that someone has an opinion that you don't agree with.
Yes, its OCN.

Quote:
Originally Posted by robchaos View Post
Tubes are cheaper, but in most cases they remove a lenses ability to focus to infinity, they decrease your DOF, and they can potentially increase color aberrations and distortions (mostly around the edges of the image) when used with zoom lenses.
1. Yeah, 50 bucks to focus retarded close, take it off in 6 seconds to shoot infinity. I really don't think hes gonna be switching between both that frequently though.

2. Decrease DOF? Yeah... Try having 30 feet of DOF with a 105 VR at MFD and f/5.6. No.

3. Potential abberations? Probably not. Lots of DX lenses work fine on full frame past about the middle of the zoom range. A tube would work great with his 18-55.
post #24 of 31
Arent tubes the same as close focusing zooms?
post #25 of 31
no tubes allow you greater magnification, while close focusing zooms just has closer focus
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post #26 of 31
using tubes essentially "add" focal length to the lens as well as giving you a stupidly close focus range.
 
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post #27 of 31
I have those $6 ebay macro tubes. If your lens doesn't have manual aperture control, you'll have to unmount your lens each time you want to change the f stop. and if you want decent detail, you'll be shooting at f/8 or smaller each time so your viewfinder will be hella dark.

It's a super cheap way to do macro on still objects though.
 
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post #28 of 31
Thread Starter 
Quote:
Originally Posted by cgg123321 View Post
I have those $6 ebay macro tubes. If your lens doesn't have manual aperture control, you'll have to unmount your lens each time you want to change the f stop. and if you want decent detail, you'll be shooting at f/8 or smaller each time so your viewfinder will be hella dark.

It's a super cheap way to do macro on still objects though.
If I get tubes I'll be going for the more expencive ones with the electrican contact points so everything can still be changed
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post #29 of 31
A true 1:1 macro lens will be better if you want to show "real" Macro.

I did a comparison for another forum awhile back about this.

Heres a few examples.



All shots taken at @ f/16 1/6 ISO640 Tripod mounted


From Canon 100 f/2.8L IS Macro @ 1:1 ratio (i forgot to turn off IS.. forgive the slight blur)


From Canon 135L f/2.0 @ MFD


From Canon 135L f/2.0 w/ 12mm tubes


From Canon 135L f/2.0 w/ 20mm tubes


From Canon 135L f/2.0 w/ 36mm tubes


From Canon 135L f/2.0 w/ 36mm + 12mm tubes


From Canon 135L f/2.0 w/ 36mm + 12mm +20mm tubes
    
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post #30 of 31
thats cause you are using a long lens. using a 50mm or wider you can get 1:1.
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