tamron 90mm+ext tubes = ?

[iwols]

Hi all just thinking about buying a tamron 90mm and selling my extension tubesbut. What would happen if ii used them with the tamron

 

[jomike]

You get more magnification, but your working distance and DOF decrease and light reaching the sensor is less, so you need a flash.

I use 48mm of tubes and a 1.4 TC (the TC increases the working distance and gets more magnification) on my D90/ Tammy 90 combo along with a diffused SB600 flash to get this:


Common blue damselfly by jomike, on Flickr

 

[Dogfish_magnet]

Hi all just thinking about buying a tamron 90mm and selling my extension tubesbut. What would happen if ii used them with the tamron

You get more magnification - approx 2:1 with a full set of tubes, but you will lose some light, but as there's no glass in tubes you wont lose any IQ as you do with a tele converter.

 

[iwols]

thanks guys

 

[iwols]

You get more magnification, but your working distance and DOF decrease and light reaching the sensor is less, so you need a flash.

I use 48mm of tubes and a 1.4 TC (the TC increases the working distance and gets more magnification) on my D90/ Tammy 90 combo along with a diffused SB600 flash to get this:


Common blue damselfly by jomike, on Flickr

super picture jomike did you do any cropping with this cheers

 

[jomike]

Thanks iwols, it was a slight crop, about 15% or so

 

[Carlh]

wow, ive got a tamron 70-300, just adding tubes gives me that?

Whats a 1.4 TC ?

edit; just bought a set of tubes from ebay for £9. thanks!