Deadly Hunters

[lennon]

Originally posted by azone
Thanks mega.

Thanks lennon for the info. Hmm.. in that case, how come tweek's 24-135 with ext tube at a distance of 5cm cannot achieve the same or better magnification (i suppose he used the 135mm end)?

Is Tweek using an extension tubes? I believe 24-135 tamron can produce 1:3 magnification by itself. Meaning at 1:3 mag, zooming the lens to 135mm and the built-in extension will extend to 45mm also (135/3). He can achieve 1:1 magnification at 135mm by adding 90mm extension.. which is very impractical already. I guess best way is to zoom to 50mm and add 30mm or more extension tubes although working distance willl be limitted but 1:1 will be achieve.

 

[isomers007]

the first one is indeed magnificent...colours are great and very sharp pix too. :thumbsup:

 

[azone]

Originally posted by jo3pit

dude, according to the lens itself it's a 1:3 reproduction ratio. wat does it mean? sorry for so many OT questions..

thanks again. [/B]

1:1 means that a 35mm object will fill up the entire frame. 1:3 means having the same object filling only 1/3 of the entire frame. But of course, if you're using a DSLR, you'll be able to fill the frame with an object smaller than 35mm.

 

[waisj]

:thumbsup: :thumbsup:

excellent.... azone, simply stunning

 

[hanoman]

Hi Azone,

I notice for all the shot, the BG colour is almost the same with the insect colour. Did u plan it? Or it happen to be like that. I like the contrast. Great shots....

 

[azone]

Originally posted by lennon
Is Tweek using an extension tubes? I believe 24-135 tamron can produce 1:3 magnification by itself. Meaning at 1:3 mag, zooming the lens to 135mm and the built-in extension will extend to 45mm also (135/3). He can achieve 1:1 magnification at 135mm by adding 90mm extension.. which is very impractical already. I guess best way is to zoom to 50mm and add 30mm or more extension tubes although working distance willl be limitted but 1:1 will be achieve.

He mentioned he did in his 2nd post above.

Hmm.. pardon me, but i still dun get it, esp the part on why a 90mm ext is required for 1:1 at 135mm.

Care to elaborate more? Thanks!

 

[azone]

Thanks to isomers007, waisj and hanoman!

hanoman,
Nope, i did not plan it. You can't control much on the BG color anyway.

 

[jo3pit]

azone, juz tested the macro mode on my telemacro lens.

any advice?
http://202.156.227.209:8181/gallery/view_photo.php?set_albumName=album03&id=Macro_Test

pix is uncrop.

 

[jeffgoh]

WAHH!! another power series from u!! No wonder they call u Prince of Macro just behind Megaweb :thumbsup:

 

[azone]

Thanks jeffgoh for your continuous support.

Originally posted by jo3pit
azone, juz tested the macro mode on my telemacro lens.

any advice?
http://202.156.227.209:8181/gallery/view_photo.php?set_albumName=album03&id=Macro_Test

pix is uncrop.

Sorry, my inbox was full. Had cleared it.

What you get is quite normal, due to the fact that telezoom lens have a longer minimum focusing distance. At what distance was your lens away from the coin? You may wan to try using externsion tubes. Extension tubes are meant to shorten this distance so that magnification is bigger.

 

[lennon]

Originally posted by azone
He mentioned he did in his 2nd post above.

Hmm.. pardon me, but i still dun get it, esp the part on why a 90mm ext is required for 1:1 at 135mm.

Care to elaborate more? Thanks!

If Tamron 24-135mm can magnify at the ratio of 1:3 at 135mm, then there should be a 45mm extension built inside (given the formula: 135/45 = 3). Thus, by adding 90mm extension behind the lens will yield into 1:1 mag.

Though I’m not sure whether this lens can maintain 1:3 mag all through out the zoom range :dunno: . If it does, zooming to 50mm and the built-in extension will extend to 16.67mm (50/16.67 = 3), thus, only 33mm extension is needed to gain 1:1 ratio, which is more practical than adding 90mm extension.

 

[azone]

Thanks lennon for the info!

 

[xdivider]

Originally posted by lennon
If Tamron 24-135mm can magnify at the ratio of 1:3 at 135mm, then there should be a 45mm extension built inside (given the formula: 135/45 = 3). Thus, by adding 90mm extension behind the lens will yield into 1:1 mag.

Though I’m not sure whether this lens can maintain 1:3 mag all through out the zoom range :dunno: . If it does, zooming to 50mm and the built-in extension will extend to 16.67mm (50/16.67 = 3), thus, only 33mm extension is needed to gain 1:1 ratio, which is more practical than adding 90mm extension.

What abt using a 2x converter? He should be able to get 2:3 and step down for reasonable performance with a good working space at the cost of manual focussing.

 

[lennon]

Originally posted by xdivider
What abt using a 2x converter? He should be able to get 2:3 and step down for reasonable performance with a good working space at the cost of manual focussing.

Yah right, 2X converter is another way to increase 1:3 into 2:3 ratio, but be careful with the compatibility issue. You may need to add atleast 12mm extension tube between the converter and the lens to ensure that both glasses wont bump to eachother.