TC stacking. ur advice pls.

[glennyong]

i was wondering, since stacking 2X on a f/2.8 lens will gib me a aperture or f/5.6

u think its possible to stack another 1.4 or 2x converter ?

means like this combi

70-200 + 2x + 2x = 280mm- 800mm F/11 lens ??

or

70-200 + 2x +1.4X = 196mm-560mm ??

u guys think its possible ??

couldnt afford super teles la. so no choice... u guys any suggestions ?

[agape01]

Just buy a D2x and a 1.7X TC and you will be able to do 680mm at f/4.8 at 6.9MP.

[glennyong]

Originally Posted by agape01 Just buy a D2x and a 1.7X TC and you will be able to do 680mm at f/4.8 at 6.9MP.

no $ even if sell away both the bodies i will still have to top up 1-1.5k more leh..........

but i see so mani pics is double and triple stacked... all looks nice to me...

machine gunners what u guys think ??

[glennyong]

i seen Canon bodies with Sigma 1.4x and 2x APO telecons.

but haven seen Nikon bodies with 1.4 and 2x ??

gt any one experienced this ?

what i worry is the AF... and picture details and stuffs tat i need to know...

[HeWolf]

I've tried with a 2x + 1.4x and it works. But then the aperture becomes too small and image quality suffers.

Ideally, need a sharp lens (so that image quality retains even when magnified) with wide aperture like F2.8, to begin with.

But then, comes back to the same issue, ie $$$

[glennyong]

Originally Posted by HeWolf I've tried with a 2x + 1.4x and it works. But then the aperture becomes too small and image quality suffers. Ideally, need a sharp lens (so that image quality retains even when magnified) with wide aperture like F2.8, to begin with. But then, comes back to the same issue, ie $$$

i have seen works with TCs on.. and its great... but double TC would mean i shoot in F/11 or F/12 if i stacked 2X 2X together.

well more or less, i guess if if i have no $ super teles, this is a alternative rite ?

[deadpixel]

It's possible, but you're gonna lose some image quality, depending on the quality of the TCs and lens. The other thing is that you're likely to lose AF as well.

Back in the manual film days, I used to stack two 2x TCs. Image was still good as the glasses were expensive ones to begin with but I did not have any focusing issues as it was fully manual.

[glennyong]

Canon can use double telecons.

Nikon users ???????????????? any one tried b4 ?

should be able to AF,

worry is the image quality.. tats all..

[agape01]

I have tried a 1.4X and a 2X stacked together on a lens.

But the only problem is that you must be able to manual focus your setup properly.

[glennyong]

Originally Posted by agape01 I have tried a 1.4X and a 2X stacked together on a lens. But the only problem is that you must be able to manual focus your setup properly.

did a small research, seems like people have done it before using a F100.

the combi was

F100 + 70-200 F/2.8 + 2X + 2X

and the best part was it Af'ed

so maybe u are right, i will AF, but we cannot be too sure until we try it out rite ?

[Pro Image]

what r u shooting?

why do you need 2x + 2x?

[glennyong]

Originally Posted by Pro Image what r u shooting? why do you need 2x + 2x?

bird~~ want to venture into birding...

[Reflection]

Originally Posted by glennyong bird~~ want to venture into birding...

At f11, you better pray that the bird sitting on a botak tree.

[glennyong]

Originally Posted by Reflection At f11, you better pray that the bird sitting on a botak tree.

whao lao.. every body also pray lor..

most important is AF la.. mus work..

[Reflection]

Question is, will the AF be hunting like made with that little light.

[glennyong]

Originally Posted by Reflection Question is, will the AF be hunting like made with that little light.

i will nt know until i try it out mah... lol....

BUT i strongly believe it will hunt like mad la... lol..

[icarus]

Originally Posted by glennyong bird~~ want to venture into birding...

Then what u need is a 600/4 + 2xTC... don't waste your time with 70-200s




If u cannot afford that, then the next best thing is to get the Sigma Bigma 50-500... super sharp lens at a super cheap price!

[glennyong]

Originally Posted by icarus Then what u need is a 600/4 + 2xTC... don't waste your time with 70-200s

good idea.. u buy me one la ?!!? 17k leh!!!!! i onli have 1k left in my acc...

[glennyong]

Originally Posted by icarus Then what u need is a 600/4 + 2xTC... don't waste your time with 70-200s If u cannot afford that, then the next best thing is to get the Sigma Bigma 50-500... super sharp lens at a super cheap price!

i wan a to buy a 500 or 800mm bigma... but no pricing guide... tat is my dream lens... but if these 2 lens cannot, den i will start saving up for a 300-800mm...

[user111]

if u want to stack, get at least 300mm to start off with