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DPChallenge Forums >> Current Challenge >> its about time!!!
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 06/27/2005 12:09:38 AM · #1
alright a macro challenge!
 06/27/2005 12:10:25 AM · #2
Someone sounds happy.
 06/27/2005 12:10:40 AM · #3
My thoughts exactly.
Sounds like fun!
 06/27/2005 12:11:43 AM · #4
Arghh! I have been shopping for a macro lens and didn't get one yet. I doubt I'd get one on time! I have closeup filters, but I suspect they'll never be able to compete with the macro lenses!
 06/27/2005 12:12:02 AM · #5
this might motivate me to get a macro lens
 06/27/2005 12:13:04 AM · #6
im gonna have fun with this one
 06/27/2005 12:13:29 AM · #7
No macro lense I guess I'll sit out :(
 06/27/2005 12:15:50 AM · #8
Just got mine a few weeks ago :-)
 06/27/2005 12:16:14 AM · #9
Originally posted by faidoi:
No macro lense I guess I'll sit out :(


Closeup filters and Kenko extension tubes are two alternatives to a macro lens at much less cost.
 06/27/2005 12:30:20 AM · #10
For the last Macro challenge, I reversed a 50mm lens. Now I'm thinking extension tubes. Do I really need the whole set, or would a 25mm tube suffice? The Canon 70-200 f/4L will focus to 3' on its own, and the Tamron 28-75 will got to about 1'. Any advice?
 06/27/2005 12:31:59 AM · #11
Originally posted by scalvert:
For the last Macro challenge, I reversed a 50mm lens. Now I'm thinking extension tubes. Do I really need the whole set, or would a 25mm tube suffice? The Canon 70-200 f/4L will focus to 3' on its own, and the Tamron 28-75 will got to about 1'. Any advice?

do both, extension tubes and reversed 50, see how small of a DOF you can get there
 06/27/2005 12:34:20 AM · #12
Originally posted by Fetor:
do both, extension tubes and reversed 50, see how small of a DOF you can get there


Considering how close I had to be with the 50mm alone, I figure the subject would have to be somewhere inside the camera if I did both. ;-)
 06/27/2005 12:35:08 AM · #13
i predict jacko is gonna win :-)
 06/27/2005 12:36:12 AM · #14
Originally posted by nico_blue:
i predict jacko is gonna win :-)


I'm not sure if he's entered anything in awhile.
 06/27/2005 01:23:00 AM · #15
I just took this shot on friday
06/27/2005 01:42:45 AM · #16
Originally posted by gaurawa:
I just took this shot on friday


OMG i had to wipe the dna off my screen..
cool picture,,gross but cool.. (i am a girl and bugs creep me out)
 06/27/2005 02:04:55 AM · #17
This is taken with 70-200. You can see the shallow DOF by looking at the space between the planks. This is the full frame, not cropped at all. I guess that this lens can do good macros as well.
Worth a try anyway.

Originally posted by scalvert:
For the last Macro challenge, I reversed a 50mm lens. Now I'm thinking extension tubes. Do I really need the whole set, or would a 25mm tube suffice? The Canon 70-200 f/4L will focus to 3' on its own, and the Tamron 28-75 will got to about 1'. Any advice?


edit: added pic

Message edited by author 2005-06-27 02:05:19.
 06/27/2005 02:52:16 AM · #18
what a sod just got a macro for the film camera.
 06/27/2005 07:10:54 AM · #19
I just ordered a Sigma 105mm macro lens on Saturday. LOL! I should get it before challenge ends.
 06/27/2005 08:24:24 AM · #20
Originally posted by nico_blue:
i predict jacko is gonna win :-)


...or his brother. ;-)
 06/27/2005 08:50:20 AM · #21
Shannon, I'd get the whole kenko set if i were you. There's no need at all to spend the money on Canon's tubes as they don't contain any glass ... there's nothing for a third party to screw up :)

Originally posted by scalvert:
For the last Macro challenge, I reversed a 50mm lens. Now I'm thinking extension tubes. Do I really need the whole set, or would a 25mm tube suffice? The Canon 70-200 f/4L will focus to 3' on its own, and the Tamron 28-75 will got to about 1'. Any advice?
06/27/2005 08:53:22 AM · #22
Originally posted by hopper:
Shannon, I'd get the whole kenko set if i were you.


I just wanted to know if I could get by with a single 25mm Kenko vs. a 12mm, 20mm and 36mm for double the price. Will it be macro enough?
 06/27/2005 08:56:38 AM · #23
Shannon, 50mm reversed on 70-200 ( at 200mm ) will give you a really extreme macro. I don't think these extension tubes can give you that magnification. The only problem you might have at 200mm is zero depth of field. I tried 50mm reversed on 300mm and even at F45 I don't get much dof.
 06/27/2005 09:04:00 AM · #24
What's the forumula for figuring out magnification using extension tubes? Whats'the downside? Just DOF?

I still can't decide about the macro lens. Anyone have any thoughts on the length versus other tradeoffs. Is the new Sigma 180mm too long for a DSLR and macro use, or just right? The Canon 60mm EF-S might also be an interesting choice, or does it require you to be too close for insects? What about the revamped Sigma 50 and 105mm macro lenses? Does Canon's USM make a difference for macros, since it appears autofocus isn't often used when shooting at macro distances?

Thanks in advance to anyone with advice!
 06/27/2005 09:04:51 AM · #25
while your lens isn't tested, this link should give you a very good idea of how close you can get. the 70-200 2.8 can get to about .4 (1:1 being 1.0) and the 2.8 doesn't focus as close as the 4.0.

//www.bobatkins.com/photography/eosfaq/closeup.htm

Originally posted by scalvert:
Originally posted by hopper:
Shannon, I'd get the whole kenko set if i were you.


I just wanted to know if I could get by with a single 25mm Kenko vs. a 12mm, 20mm and 36mm for double the price. Will it be macro enough?
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