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05/19/2005 11:45:15 AM · #1 |
I am trying to take photos with my Sigma 105mm and inverting the Canon 50mm lens in front of it and i can't focus on nothing why is that am i holding the lens incorrectly?
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05/19/2005 12:07:43 PM · #2 |
Start off with the 50mm wide open and infinity focus
Be about 2cm from the subject and move the camera back and forth to focus
Forget using autofocus
Be aware that your dof is prolly <1mm
Have fun :)
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05/19/2005 12:30:11 PM · #3 |
Originally posted by colda:
Start off with the 50mm wide open and infinity focus
Be about 2cm from the subject and move the camera back and forth to focus
Forget using autofocus
Be aware that your dof is prolly <1mm
Have fun :) |
´But what should be attached to the camera is the 105mm and the 50mm would be at the end of the 105mm right?
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05/19/2005 12:31:15 PM · #4 |
Originally posted by Discraft:
Originally posted by colda:
Start off with the 50mm wide open and infinity focus
Be about 2cm from the subject and move the camera back and forth to focus
Forget using autofocus
Be aware that your dof is prolly <1mm
Have fun :) |
´But what should be attached to the camera is the 105mm and the 50mm would be at the end of the 105mm right? |
Right.
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05/19/2005 12:35:00 PM · #5 |
so i do not hold the 50mm right to the front of the 105mm i have to come back and forth and leave the 50mm where it is and try to focus coming back and forth... right?
Sorry for the many questions but i want to do it correctly.
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05/19/2005 12:41:23 PM · #6 |
| If I remember correctly there is an adapter ring that lets you mount the 50mm onto the lens, which in your case is the 105mm. It is possible to handhold them but it can be a little tricksy. As Colda said, you have to move the camera back and forth until you get the right distance to get a focus. It isnt an easy thing to do. |
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05/19/2005 12:49:40 PM · #7 |
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05/19/2005 01:12:53 PM · #8 |
Originally posted by Discraft:
so i do not hold the 50mm right to the front of the 105mm i have to come back and forth and leave the 50mm where it is and try to focus coming back and forth... right?
Sorry for the many questions but i want to do it correctly. |
No, the 50mm has to be connected to the front of the 105mm with a macro coupler (see hopper's post)
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05/19/2005 01:20:19 PM · #9 |
Hows this for a first attempt?
This is the flower.
This is the attempt...
It's my first time so spair me. :)
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05/19/2005 02:08:56 PM · #10 |
It seems like it is so bad that no one says nothing to help... Only questions but you post a image for help everyone stays quite... :(
Please critique to see if i am on the right track.
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05/19/2005 02:18:37 PM · #11 |
| I understand it is not always easy focusing when doing Macros. That is quite a big difference though. I don't have enough expertise in doing Macros, it's been about 20 years since I owned one with an old Pentax SLR, but I'm looking forward to using one when I can get one. Keep going though! Good luck. |
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05/20/2005 04:54:53 PM · #12 |
Heres another try.
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05/20/2005 05:19:55 PM · #13 |
you do not need a macro coupler... and that one is gonna need an adapter for the 50mm. I get fine results just holding the 50 by hand infront of the attached lens. Focus is sooo hard with a handheld setup because you're talking mm of DOF. Good luck with it, it takes some practice for sure!
ps: my nature entry was done with a reversed 50mm.
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05/20/2005 05:22:01 PM · #14 |
Originally posted by kyebosh:
you do not need a macro coupler... and that one is gonna need an adapter for the 50mm. I get fine results just holding the 50 by hand infront of the attached lens. Focus is sooo hard with a handheld setup because you're talking mm of DOF. Good luck with it, it takes some practice for sure!
ps: my nature entry was done with a reversed 50mm. |
The shot above was taken without the coupler... i think it is in focus or is it not?
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05/20/2005 05:50:32 PM · #15 |
Since we are on the same topic here, I thought I would ask a few questions to learn about this procedure compeletely. I am interested in going as macro as snow flakes.
Q1) Can we combine two macro lenses the same way, for example 105mm & 60mm macro Nikkors? Would it increase the magnification power?
Q2) If it has to be 50mm, should it be f1.4 or f1.8 (two options available in Nikkor lenses)or it doesn't matter at all?
Q3) Any idea if Tamron 90mm Di macro can also be used with 50mm instead of 105mm? I tried finding out but all macro picz I came across only talk about combining 105mm with reverse mount of 50mm, no further details for totally amatuers like myself.
Q4) Since I haven't ordered the lenses yet, any suggestions if anything else or any other better lense I need to buy in order capture the beauty of snow flakes?
Thanking you in anticipation for detailed answers and all your kindness and time :)
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05/20/2005 05:59:58 PM · #16 |
Whenever I try to use this (I have a coupler) I find that there is not enough light to make any type of handheld exposure. If someone could tell me why this is and if it holds true with everyone else that would be greatly appreciated. I couple my Sigma 105 to a Minolta 50mm f/1.4.
Thanks,
Lee |
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05/20/2005 06:08:44 PM · #17 |
Originally posted by Nonage:
Since we are on the same topic here, I thought I would ask a few questions to learn about this procedure compeletely. I am interested in going as macro as snow flakes.
Q1) Can we combine two macro lenses the same way, for example 105mm & 60mm macro Nikkors? Would it increase the magnification power?
Q2) If it has to be 50mm, should it be f1.4 or f1.8 (two options available in Nikkor lenses)or it doesn't matter at all?
Q3) Any idea if Tamron 90mm Di macro can also be used with 50mm instead of 105mm? I tried finding out but all macro picz I came across only talk about combining 105mm with reverse mount of 50mm, no further details for totally amatuers like myself.
Q4) Since I haven't ordered the lenses yet, any suggestions if anything else or any other better lense I need to buy in order capture the beauty of snow flakes?
Thanking you in anticipation for detailed answers and all your kindness and time :) |
Q1 yes.
Q2 it doesn't have to be the 50mm however it works well.
Q3 if the size of the front elements are similar sizes it should work.
Q4 The Sigma 150mm might be a good option, the 105 and canon 100's are also excellent. Focusing speed doesn't matter with a reversed lens.
The longer the lens on the body, the more magnification. The wider the front lens, the more magnification.
edit: few more things... The reason the 50 works so well is because of the big opening in the rear, larger appature lenses work better. I cannot however use my Tamron 17-35 on any lens as it just doesn't work, nore can I use the 50mm on my 80-200L. I have used my 100-300, 28-80, and the 50mm in different combinations with varying quality of results.
Message edited by author 2005-05-20 18:11:49.
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