Extension Tubes
Jun 17, 2012 04:31:01 #
AnnieB
Loc: UK
Hello there - hoping some of you will be able to help an enthusiastic amateur.
Have just received my set of Polaroid AF extension tubes.
I am uable to buy a dedicated macro lens at the moment. Have spent a day playing and have got some very pleasing results with the 13mm, however, when I try using the other two, either in isolation or combined, then camera is unable to nail the focus and is continually searching.
I have a canon 550d and my lenses are Canon 18-55 and 55- 250 (kit) and the "nifty fifty". As you will guess from my lenses I am a relative newbie to DSLR!
PS have tried using tripod.
Have just received my set of Polaroid AF extension tubes.
I am uable to buy a dedicated macro lens at the moment. Have spent a day playing and have got some very pleasing results with the 13mm, however, when I try using the other two, either in isolation or combined, then camera is unable to nail the focus and is continually searching.
I have a canon 550d and my lenses are Canon 18-55 and 55- 250 (kit) and the "nifty fifty". As you will guess from my lenses I am a relative newbie to DSLR!
PS have tried using tripod.
Jun 17, 2012 09:35:08 #
Try manual focusing and if that doesn't work move the camera away from the subject with the additional extension tubes might be too close to focus even the manual mode will not help if this is the case.
Jun 17, 2012 09:52:24 #
AnnieB
Loc: UK
Yes, have been trying all morning and have tried what you have suggested and it does work - thank you. Just another query though, my photos have very little depth of field, would a dedicated macro lens have more? Hoever, even with narrow dof, am having lots of fun!!
Jun 17, 2012 10:02:04 #
Due to how close you are to the subject you dont get a lot of depth of field. I have a nikor 105mm macro and dont get a large depth of field. Since you are on a tripod might want to set aperture to f16 or higher this should get the best depth of field though will reduce shutter speed
Jun 17, 2012 10:05:53 #
AnnieB wrote:
Yes, have been trying all morning and have tried what you have suggested and it does work - thank you. Just another query though, my photos have very little depth of field, would a dedicated macro lens have more? Hoever, even with narrow dof, am having lots of fun!!
Like you, I started with extension tubes, the cheap $10 kind - totally manual. As you're found, focusing manually works best. As for the depth of field, there is a lot of math and theory involved, and some people might jump in with that. Basically, yes, there is a very shallow depth of field. The closer you get to your macro subject, the less DOF you will have. I got a Nikon 105mm macro after playing with the extension tubes. I still use manual focus and exposure, and there is still a shallow DOF.
Jun 17, 2012 11:17:54 #
Jun 17, 2012 11:20:25 #
AnnieB
Loc: UK
Thank you - may aim is to save for a macro lens, but will just have to make do with tubes for now - still have a lot of learning to do me thinks - love your photo of the dandilion clock by the way!
Jun 17, 2012 11:28:13 #
AnnieB wrote:
Thank you - may aim is to save for a macro lens, but will just have to make do with tubes for now - still have a lot of learning to do me thinks - love your photo of the dandilion clock by the way!
I saved a bundle by getting mine from ebay.
Jun 17, 2012 12:58:30 #
Jun 17, 2012 13:13:06 #
Also you will lose a lot of light here are examples with tubes and without
With tubes ISO400 F11
Without tubes ISO200 F18
Jun 17, 2012 13:51:12 #
hangman45 wrote:
Also you will lose a lot of light here are examples with tubes and without
Great pictures, but I hope those things don't live near you.
Jun 17, 2012 13:56:16 #
jerryc41 wrote:
Great pictures, but I hope those things don't live near you.
hangman45 wrote:
Also you will lose a lot of light here are examples with tubes and without
Great pictures, but I hope those things don't live near you.
Just Assassin Bug Nymphs
Jun 17, 2012 14:42:45 #
hangman45 wrote:
Just Assassin Bug Nymphs
jerryc41 wrote:
Great pictures, but I hope those things don't live near you.
hangman45 wrote:
Also you will lose a lot of light here are examples with tubes and without
Great pictures, but I hope those things don't live near you.
Just Assassin Bug Nymphs
Hope they're unique to your part of the country...
Jun 17, 2012 14:47:12 #
Bill41 wrote:
Hope they're unique to your part of the country...
hangman45 wrote:
Just Assassin Bug Nymphs
jerryc41 wrote:
Great pictures, but I hope those things don't live near you.
hangman45 wrote:
Also you will lose a lot of light here are examples with tubes and without
Great pictures, but I hope those things don't live near you.
Just Assassin Bug Nymphs
Hope they're unique to your part of the country...
Here is one a little more mature
http://farm8.staticflickr.com/7088/7339306720_18cb0cf1d2.jpg
IMGP7422 by crumlyt, on Flickr
And even more mature
http://farm8.staticflickr.com/7081/7241880662_1bf72cc98c.jpg
_IGP5913_1 by crumlyt, on Flickr
Jun 17, 2012 14:56:18 #
hangman45 wrote:
Just Assassin Bug Nymphs
jerryc41 wrote:
Great pictures, but I hope those things don't live near you.
hangman45 wrote:
Also you will lose a lot of light here are examples with tubes and without
Great pictures, but I hope those things don't live near you.
Just Assassin Bug Nymphs
The name fits the appearance. That's why my wife will never live "below the bug line." We spent lots of time in the south, and she doesn't like making new friends with six legged creatures.
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