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 Post subject: 50mm + ext. tube?
PostPosted: Fri Jul 23, 2010 10:48 am 
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Joined: Mon Jan 18, 2010 3:52 pm
Posts: 2177
Location: The Netherlands
Hey all,
What do you think about the cheap 50mm f/1,8 with an extension tube?
It should give great results IMHO.

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Ruben

Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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 Post subject:
PostPosted: Fri Jul 23, 2010 2:20 pm 
Personally I would save your pennies and opt for a 60mm 2.8 ED macro.

http://www.amazon.com/Nikon-60mm-2-8G-M ... 56&sr=8-12


Cheers


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 Post subject:
PostPosted: Fri Jul 23, 2010 2:34 pm 
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Joined: Mon Jan 18, 2010 3:52 pm
Posts: 2177
Location: The Netherlands
That macrolens is almost 5x more expensive than the 50mm with ext tube. :cry:

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Ruben

Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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 Post subject:
PostPosted: Fri Jul 23, 2010 3:03 pm 
Hey... :C i feel ya.

Took me many many months to sell and save my pennies to get the 105 ed vr macro lens.

Well worth it though!


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 Post subject:
PostPosted: Sat Jul 24, 2010 5:32 am 
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Joined: Mon Jan 18, 2010 3:52 pm
Posts: 2177
Location: The Netherlands
anyone tried btw?

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Ruben

Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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 Post subject:
PostPosted: Sat Jul 24, 2010 9:35 am 
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Joined: Sun May 25, 2008 12:48 pm
Posts: 8049
Location: UK
Actually, I bought a set of extension rings mainly to use with the 50mm f/1.8, but I never actually got round to trying it! Have a quick test... bottles are about 1cm wide. Extension tubes are some cheap unbranded ones from ebay, but they do have electrical contacts so the lens can still adjust aperture. Set of 3 at 13, 21, 31mm.

Left image is at f/1.8, right image is at f/5.6. Aperture priority, fixed ISO200. Lens set to minimum focus distance.

Image Image
Lens only

Image Image
13mm extension

Image Image
21mm extension

Image Image
31mm extension

Image Image
44mm extension (31+13)

Image Image
52mm extension (31+21)

Image Image
65mm extension (31+21+13)

With maximum extension, I estimate the magnification to be 1.4x.

As a general summary, the f/1.8 images are a bit glowy with reduced contrast. Not to mention the very thin DoF of course. Stopped down to f/5.6 for comparison, the DoF is more manageable and sharpness and contrast improve.

The biggest drawback of extension tubes compared to a real macro lens is that the focus range is practically non-existent the more you extend. You have to focus by moving yourself, and if the magnification isn't what you want, you have to switch tubes. It's not as simple as turning the focus ring.

_________________
Canon DSLRs: 7D2, 7D1, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 10-18, 15-85
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 50/1.4A, 150 macro, 120-300 f/2.8 OS
Compacts: Sony HX9V, Fuji X100.


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 Post subject:
PostPosted: Sat Jul 24, 2010 10:47 am 
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Joined: Mon Jan 18, 2010 3:52 pm
Posts: 2177
Location: The Netherlands
True, but very cool popo!
That's a cheap macro combi of 140$ with 1,4 magnification, nice... :twisted:

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Ruben

Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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 Post subject:
PostPosted: Tue Aug 10, 2010 3:14 pm 
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Joined: Mon Jan 18, 2010 3:52 pm
Posts: 2177
Location: The Netherlands
For €30 Im buying a Minolta XG-1 with bag, MD 50mm 1,7 and a MD 135mm 2,8.
Doesnt sound bad eh?

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Ruben

Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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