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Extension tubes on a camera without live view

FORUMS Photography Talk by Genre Macro Talk
Thread started 26 Nov 2011 (Saturday) 10:14   
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djdy
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I've been attempting to get used to using extension tubes with Canon 100mm, on a camera that does not have live view.

Of course, focusing has been the biggest challenge.

What can you recommend to get better at focusing?

Currently I use depth-of-field preview button while adjusting distance or focus.

Would I benefit from a macro rail? If so, which one? My tripod is a Manfrotto, but the Manfrotto macro rail doesn't seem to have good reviews.

Thank you for your tips.

Post #1, Nov 26, 2011 10:14:17


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Lester ­ Wareham
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I can't see why you would want to stop down when focussing, you are just making it harder, depth of field preview is for what it says, not for focus.

To be honest Dof preview is not much use for macro as you know you have paper thin dof.

Live view can be useful but we managed without for decades.

A focus rail is useful for static subjects but not essential.

Post #2, Nov 27, 2011 15:09:19


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dubstylz
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I NEVER use LV infact i have it disabled so i can use the set button to get to flash EC quickly, to focus i gently rock back and forth untill i get the plane of focus just where i want it, from there its just hit and miss for me as to weather i nail it or not.

Post #3, Nov 27, 2011 15:50:36


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ceriltheblade
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really? i have used the DOF button in cases when i have too little light to see (100 @ f8-f11 with extension tubes for example) and when i don't happen to have a torch with me
though i guess i have left the subject...sorry

Post #4, Nov 28, 2011 06:52:28


7D/5dIII
50 1.8 II, MP-E65, 85 II, 100 IS
10-22, 16-35 IS, 24-105, 70-200 f4IS, tamron 28-75 2.8
600 ex-rt, 055xproB/488rc2/Sirui k40x, kenko extens tubes

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Lester ­ Wareham
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ceriltheblade wrote in post #13461919external link
really? i have used the DOF button in cases when i have too little light to see (100 @ f8-f11 with extension tubes for example) and when i don't happen to have a torch with me
though i guess i have left the subject...sorry

But the stop down preview makes the image darker, oh wait are using stop down preview to trigger the ETTL II flash modelling function?

This is why the macro flashes have focus assist lights, means you get more light to focus by without stopping down as stop down increases dof making it less easy to see the plain of focus.

Ok I understand why one might do this, wonder if something could be organised using a LED headtourch.

Post #5, Nov 28, 2011 14:51:58


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Extension tubes on a camera without live view
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