snipper
Registered Member 
Posts: 627
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Post by snipper on Feb 6, 2007 11:52:06 GMT 8
Good news to those who want a ring flash for macro photography. After uncountable faliures in my experiments, I found a cheap way to improve lighting for macro photography.
I found a round florescent tube (about 6 inch diameter) that runs on 12V DC. This is actually a car acessories. I took out the housing and did a very simple experiment. Set cam to Av mode. at f2.8.
Aim camera at subject in a very dim area... Shutter speed reading was 0.3 sec. Den i turn "ON" the ring light.. Viola reading is now 1/60sec.. thats about 8 stops.
Now to complete my setup, I need a portable battery pack. which would be better, a 12V motocycle battery or 8x "D" size rechargable batteries?
This experiment will continue after CNY.
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Post by broccoli on Feb 7, 2007 22:27:30 GMT 8
You are the man!!!
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Post by stevewhy on Feb 10, 2007 2:19:08 GMT 8
oh
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snipper
Registered Member
Posts: 627
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Post by snipper on Feb 10, 2007 13:39:41 GMT 8
After CNY. This is still a prototype. can onlt test indoors for now cos I dont have a 12V battery and I have not made any brackets to attached it to the hood yet. Now too bz to do all these. But prelimary test is encouraging using a AC/DC adaptor.
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Post by lancerck on Feb 11, 2007 0:48:09 GMT 8
Good news to those who want a ring flash for macro photography. After uncountable faliures in my experiments, I found a cheap way to improve lighting for macro photography. I found a round florescent tube (about 6 inch diameter) that runs on 12V DC. This is actually a car acessories. I took out the housing and did a very simple experiment. Set cam to Av mode. at f2.8. Aim camera at subject in a very dim area... Shutter speed reading was 0.3 sec. Den i turn "ON" the ring light.. Viola reading is now 1/60sec.. thats about 8 stops. Now to complete my setup, I need a portable battery pack. which would be better, a 12V motocycle battery or 8x "D" size rechargable batteries? This experiment will continue after CNY. You may like to try the sealed wet cell that's available in Sim Lim Tower. During a recent wedding session, I saw a Video photog did his own DIY flood light using the sealed batt, invertor and a few piece of low wattage energy saving bulb. And apparently it seems to work as I saw his video to be adequatly litted, even for the wedding dinner. Forget to add, according to him, the batt last quite long per charge too. |
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snipper
Registered Member
Posts: 627
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Post by snipper on Feb 12, 2007 18:42:33 GMT 8
Good news to those who want a ring flash for macro photography. After uncountable faliures in my experiments, I found a cheap way to improve lighting for macro photography. I found a round florescent tube (about 6 inch diameter) that runs on 12V DC. This is actually a car acessories. I took out the housing and did a very simple experiment. Set cam to Av mode. at f2.8. Aim camera at subject in a very dim area... Shutter speed reading was 0.3 sec. Den i turn "ON" the ring light.. Viola reading is now 1/60sec.. thats about 8 stops. Now to complete my setup, I need a portable battery pack. which would be better, a 12V motocycle battery or 8x "D" size rechargable batteries? This experiment will continue after CNY. You may like to try the sealed wet cell that's available in Sim Lim Tower. During a recent wedding session, I saw a Video photog did his own DIY flood light using the sealed batt, invertor and a few piece of low wattage energy saving bulb. And apparently it seems to work as I saw his video to be adequatly litted, even for the wedding dinner. Forget to add, according to him, the batt last quite long per charge too. Thanks for the info, lancerck, will try that out after CNY. |
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snipper
Registered Member
Posts: 627
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Post by snipper on Mar 15, 2007 1:42:47 GMT 8
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Post by 28degree on Mar 15, 2007 9:05:56 GMT 8
wah seh...
how bright is it in darkness ahhh? will it scare the insects away? hehe
or worse....attract insects to the bright source ;D
but looks cool....
got lightning brightness to control?
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snipper
Registered Member
Posts: 627
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Post by snipper on Mar 15, 2007 13:11:43 GMT 8
dont have brightness control lah. think its not bright enough. trying out tonight at lower pierce. See my outing post. will be there at 7:30pm with steven. everyone can join in.
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Canew
Registered Member
Posts: 184
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Post by Canew on Mar 15, 2007 16:47:57 GMT 8
Wah! Bro. Deswitch very hardworking.  |
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snipper
Registered Member
Posts: 627
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Post by snipper on Mar 15, 2007 17:12:11 GMT 8
Bro... dont tekan me leh... I'm always "hard working" mah...
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