Macro samples using extension tubes and ring flash

[StreetShooter]

Yes, that's why you need to stop down to f8.
But you need to anyway, to increase DOF.

And it allows you to use ISO100 (although all along I am shooting ISO400).

 

[megaweb]

Originally posted by StreetShooter
Yes, that's why you need to stop down to f8.
But you need to anyway, to increase DOF.

And it allows you to use ISO100 (although all along I am shooting ISO400).

thanks ... what is the distance from the object to the lens using your lens ?

 

[StreetShooter]

Varies, depending on the zoom. From about one inch at 75mm, to about 2-3 feet away using 300mm zoom. Haven't really made exact measurements. This is using 65mm extension tube (13+21+31). Not sure about other combinations, but should obviously be "longer".

 

[megaweb]

Originally posted by StreetShooter
Varies, depending on the zoom. From about one inch at 75mm, to about 2-3 feet away using 300mm zoom. Haven't really made exact measurements. This is using 65mm extension tube (13+21+31). Not sure about other combinations, but should obviously be "longer".

Thanks ... from your sample shots , seem like the full blast flash work perfectly in manual mode ... never see any overexposed effect

 

[StreetShooter]

Trial and error. I set shutter speed fixed at 1/200, and vary the aperture, depending on the zoom length. Shorter zoom length = smaller aperture (f11-f22) because the object is nearer, and therefore the flash is brighter. It also serves to make the depth of field greater, which you need because the subject is nearer. Conversely, at longer zoom lengths I set the aperture larger (up to 5.6) to capture more light. At that zoom length, the relative depth of field is already quite wide, so you can open up the aperture without worrying about too narrow DOF. Works out nicely.

I have found that the magnification changes quite a bit from 75 to 300 mm. 75mm gives the greatest magnification.

My working method is to decide how much magnification I want, move the camera to the appropriate distance to frame the subject nicely, adjust the zoom until the subject is in focus. Then I check what the focal length is (by reading the markings on the lens body) and adjust the aperture (agar agar). Then shoot, check, change, try again.

 

[megaweb]

Originally posted by StreetShooter
Trial and error. I set shutter speed fixed at 1/200, and vary the aperture, depending on the zoom length. Shorter zoom length = smaller aperture (f11-f22) because the object is nearer, and therefore the flash is brighter. It also serves to make the depth of field greater, which you need because the subject is nearer. Conversely, at longer zoom lengths I set the aperture larger (up to 5.6) to capture more light. At that zoom length, the relative depth of field is already quite wide, so you can open up the aperture without worrying about too narrow DOF. Works out nicely.

I have found that the magnification changes quite a bit from 75 to 300 mm. 75mm gives the greatest magnification.

My working method is to decide how much magnification I want, move the camera to the appropriate distance to frame the subject nicely, adjust the zoom until the subject is in focus. Then I check what the focal length is (by reading the markings on the lens body) and adjust the aperture (agar agar). Then shoot, check, change, try again.

sound like I have to borrow or get 1 DSLR to try the effect b4 using this ringflash ...

how often do u get overexposed effect during trial ?

 

[StreetShooter]

You can borrow mine to try first. I'm tired of macro. Want to go back to my first love - street photos.

 

[megaweb]

Originally posted by StreetShooter
You can borrow mine to try first. I'm tired of macro. Want to go back to my first love - street photos.

wah ... so fast give up macro liao .... I will try my setup 1st (using flash bracket)

 

[Wai]

Originally posted by megaweb


sound like I have to borrow or get 1 DSLR to try the effect b4 using this ringflash ...

how often do u get overexposed effect during trial ?

yes...BUY BUY BUY!!!

can u see EOS 1D is waving to you...

 

[megaweb]

Originally posted by kamwai


yes...BUY BUY BUY!!!

can u see EOS 1D is waving to you...

No