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Thread: Macro Shots
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16th August 2011, 12:33 PM #1
Macro Shots
At Wheelinround and Bellyup's urging, here are a couple of shots taken with a Nikon d3100 (nice entry level camera) and a Tamron f/2.8 90mm macro lens.
So if the pics suck, blame them...not my fault gringo!!
first - focus stacking (164 shots) -Tip of a pine cone.
second - focus stacking (56 shots) - Water drops on a cd disc.Cheers,
Ed
Do something that is stupid and fun today, then run like hell !!!
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16th August 2011 12:33 PM # ADSGoogle Adsense Advertisement
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16th August 2011, 02:55 PM #2
Ed still impressed
Now all you need to do is photograph some tools that have been sharpened
Hope this new found passion is getting you out and about.
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16th August 2011, 08:19 PM #3SENIOR MEMBER
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Ed let me see if I got this right.
164 shots of the tip of a pine cone??
Are you sure you don't need to get a life??
You should take up woodturning or something.
Ed mate, all this is ment in jest of course.
Cheers
TimSome days I turns thisaway, somedays I turns thataway and other days I don't give a stuff so I don't turn at all.
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16th August 2011, 11:15 PM #4
Focus stacking????? I had to google that one and came up with this. Sounds like something similar to HDR, can you give us novices a but more info Ed.
To grow old is inevitable.... To grow up is optional
Confidence, the feeling you have before you fully understand the situation.
What could possibly go wrong.
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17th August 2011, 01:32 AM #5
Tim...your absolutely right about me needing to get a life - completely ruined the one I have now with 50 +/- years of debauchery, imbibing liquor, womanizing (), etc., etc.
Yep...164 shots. At a distance of lens (90mm) to object of 233.68mm the focus area is ridiculously small, so consequently a very small distance increase (or reduction) from lens to object will result in a small slice of area that is in focus (hope this is clearer than mud)
Attached are 2 images - the first taken and the last taken in the "stack". Note the different focus areas.
When taking the stack, exposure and shutter speed remain the same throughout the shoot.
Processing the stack is done using a program called Zerene Stacker (have tried others but Zerene was the best). All 164 shot files were added, the program did it's thing and the end result was an in focus image with a pretty good depth of field.
Cool stuff, huh?Cheers,
Ed
Do something that is stupid and fun today, then run like hell !!!
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17th August 2011, 01:43 AM #6
Hey GJ...focus stacking is different from HDR in that when taking shots for focus stacking the camera's exposure settings remain the same throughout.
In HDR, the aim is to get the same image with different exposure settings, eg. - 3 shots underexposed, 1 shot perfect exposure, 3 shots overexposed.
Those shots are then processed in a program that results in one high dynamic range exposure.
Lot's of examples of each technique on YouTube.
How's Collingwood doin' this year???Cheers,
Ed
Do something that is stupid and fun today, then run like hell !!!
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17th August 2011, 08:47 AM #7
GREAT!!!!!!
19 Wins - 1 Loss. Top of the ladder.
GO THE MIGHTY 'PIES
Attachment 179261To grow old is inevitable.... To grow up is optional
Confidence, the feeling you have before you fully understand the situation.
What could possibly go wrong.
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17th August 2011, 09:19 AM #8Senior Member
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hawks
watch out for the hawks there are flying,
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17th August 2011, 10:16 AM #9Cheers Fred
The difference between light and hard is that you can sleep with the light on.
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17th August 2011, 10:35 AM #10
This is getting off topic. I only responded to a question from Ed.
Perhaps this conversation could be continued here.To grow old is inevitable.... To grow up is optional
Confidence, the feeling you have before you fully understand the situation.
What could possibly go wrong.
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17th August 2011, 11:30 AM #11.
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17th August 2011, 11:41 AM #12
Granted that when you stop higher, you get more of an area in focus...but the tradeoff is DOF gets less - final product does not seem to be so "deep"
Cheers,
Ed
Do something that is stupid and fun today, then run like hell !!!
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17th August 2011, 11:48 AM #13SENIOR MEMBER
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Some days I turns thisaway, somedays I turns thataway and other days I don't give a stuff so I don't turn at all.
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17th August 2011, 12:15 PM #14.
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It sounds like you don't understand what DOF means. At higher value stops the volume (not just the area) in focus becomes greater and the DOF becomes greater not less.
Maybe the increased apparent depth has something to do with the software or maybe the ability to set the actual focussing distance? How do you set the focus for the 164 images? Is it done systematically (ie 233.68, 233.70, 233.72 etc) or do you just take randomly focussed images across the object depth?
It would be interesting to see the same image done with 164 shots at low stop versus fewer shots at higher stops.
BTW those values of DOF were obtained using an website called DOFMaster. I also have the iphone app and find it very useful for checking all this sort of stuff out in the field.
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18th August 2011, 11:22 AM #15
Hmmmm...could very welll be operating under a misconception regarding DOF in general.
It's a bit late in the day for me to set up and compare the shots at different F/stops. I will do so tomorrow and see how it plays out - you are undoubtedly correct, and I need to go back to DOF 101 for a refresher
Thanks Bob...look for the results tomorrow.
BTW- I use a Velbon Super Slider Rail to advance the camera - object is stationaryCheers,
Ed
Do something that is stupid and fun today, then run like hell !!!
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