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Old Jul 18, 2006, 5:19 PM   #1
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just hooked up my smc-M200mm f4 to 64mm of extension tube. i got the tubes for 15.50 on ebay. with the 64mm i get almost 1:2 ratio, almost 3 feet of working distance and i can use the onboard flash. it's too hot to go outside so this has been an indoor experiment. i'll some more with other lenses later. all shot w/onboard flash, 1/180, f16
no crop here. shows how to determine magnification.
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Old Jul 18, 2006, 5:19 PM   #2
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this one is cropped
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Old Jul 18, 2006, 5:20 PM   #3
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no crop
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Old Jul 18, 2006, 5:20 PM   #4
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also no crop
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Old Jul 18, 2006, 9:21 PM   #5
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Roy,

This is the best I could do with my 200mm A* with a 36mm and a 12mm tube on the lens at 180/sec at f/4 using the onboard flash. It is dark here so I shot this in the kitchen which is why the quality is not what it could be.



Here it is the 200mm lens with the extra 20mm for a total of 68mm using a flashlight for light at 125/sec at 4.5.



Tom
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Old Jul 18, 2006, 10:03 PM   #6
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Roy,

Should your heading be 'Why didn't I buy a macro'.
Your extension tube set up is particularly good for indoor set-up.
If used outdoor, do you need a tripod because of the 3 ft of working distance for macro work?

Daniel

robar wrote:
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just hooked up my smc-M200mm f4 to 64mm of extension tube. i got the tubes for 15.50 on ebay. with the 64mm i get almost 1:2 ratio, almost 3 feet of working distance and i can use the onboard flash. it's too hot to go outside so this has been an indoor experiment. i'll some more with other lenses later. all shot w/onboard flash, 1/180, f16
no crop here. shows how to determine magnification.
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Old Jul 18, 2006, 10:39 PM   #7
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Daniel,

I don't know about Roy, but I used a tripod and timed shutter release inside and I will try the setup outside tomorrow if the temp gets bellow 100F.

Tom
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Old Jul 19, 2006, 5:15 AM   #8
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handheld at 1/180sec f16 with the onboard. i just wanted to see if i could get some distance.. worked out pretty well.

tom, i don't think it will be under 100f here today. 107 with 70% yesterday and today may be worse.. i can still feel yesterday in my bones. it's pretty brutal..
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Old Jul 19, 2006, 5:32 AM   #9
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Tom/Roy

Temp here yesterday was 101 and about 75% humididity. Cold front went throught last night And Dropped the humidity to about 50% , the high today Is supposed to be between 85-90.
When it gets hot and muggy I Stay inside because it plays havic with my asthma

Phil
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Old Jul 19, 2006, 7:37 AM   #10
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I'm looking at getting a macro lense but don't have much money right now.
So Im looking more along the lines of some extension tubes, or a reverse mount adapter.
I have a Pentax 50m 1.7 and a Sigma 18-125mm.
What lense and accesory (tubes or adapter) would give me the best results.

Also can you use tubes with the reverse mount adapter on the end for double the macroness? :lol:

sorry, another question. I don't really understand the ratios, 1:1 1:2 etc, could someone point me in the direction of a decent explanation with examples etc etc.

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