strawberry flower macro - Creative Uses of CHDK - CHDK Forum
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strawberry flower macro

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Offline drewster

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strawberry flower macro
« on: 11 / July / 2008, 13:45:03 »
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s3is CHDK macro  (reverse standard lens)



http://www.wizfamily.co.uk/album/CHDK/IMG_3040.JPG

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G9, Ixus75
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Offline jetzt

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Re: strawberry flower macro
« Reply #1 on: 12 / July / 2008, 11:51:01 »
Quote from: drewster on 11 / July / 2008, 13:45:03
s3is CHDK macro  (reverse standard lens)



http://www.wizfamily.co.uk/album/CHDK/IMG_3040.JPG


How did you manage to "reverse" mount the lens on a s3is?
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Offline sun_neo_s

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re
« Reply #2 on: 15 / July / 2008, 12:45:29 »
Guys!!  wht does reverse mount means????   
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Offline LjL

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Re: strawberry flower macro
« Reply #3 on: 15 / July / 2008, 19:57:29 »
Mounting the lens with the face that usually lies inside the camera outside.

It's a common technique to obtain macro in SLRs.
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Offline sun_neo_s

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Re: strawberry flower macro
« Reply #4 on: 16 / July / 2008, 12:24:48 »
any help with A720IS to get a super macro mode... although it has a superb macro mode ,, but more is always welcome .. 
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Offline LjL

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Re: strawberry flower macro
« Reply #5 on: 16 / July / 2008, 13:46:00 »
I'm not even sure I've understood what the super macro mode is, although I hear that some cameras have such thing.
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Offline sun_neo_s

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Re: strawberry flower macro
« Reply #6 on: 16 / July / 2008, 13:56:08 »
if u remember approx. how far camera lens was from the strawberry flower when u took the picture???
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Offline sun_neo_s

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Re: strawberry flower macro
« Reply #7 on: 16 / July / 2008, 13:58:00 »
& did u buy special macro lens for this purpose???    plz provide lens name & resource ...
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Offline drewster

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Re: strawberry flower macro
« Reply #8 on: 20 / July / 2008, 17:42:05 »
Hi,  just returned from a weeks break.  I used an old slide projector 70mm focal length,  but any old standard lens will do (50mm).  The idea is to reverse the lens so that the front side is connected to the front of the digital lens.

I used duct tape to connect them,  not recommended though,  if the lens retracts,  it may cause damage.  I've ordered a hood/ adapter which I'll attach the lens onto.

I don't remember the subject to lens distance but it of the order of 10mm. Idea is to use chdk to user a fast shutter speed to minimise camera shake if you are handholding,  and to minimise aperture f8 for max depth of field,  which is narrow for macro work
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