extension tubes and ND filters

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ukphd

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Nancy
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Hello again

Sorry for more questions but I want to get hold of a set of extension tubes for my canon 450d and wasn't sure which ones would continue to allow the AF etc to be used. My budget is low so I can't go for canon originals!


Also I am considering getting an ND4 and ND8 filter and wondered which brands to choose (again budget dependent!) :D

thanks very much
Nancy :)
 
Opteka do a set that auto af I seem to remember, about £70.00.
Can't help with the NDs though, long time since I bought one new! Usually go second hand on the forum.
 
ukphd said:
Yeah I'd rather get second hand ones but only have a week before I go away for 3 months so need to get them asap so unless I'm very lucky and some come up I'll have to buy new :(
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Leaving it a bit late! Have a look on ebay for ones that finish soon, pay for next day delivery and you might have a chance!
 
There is a set of Jessops Auto Extension Tubes for £75 in the for sale section. Canon, Kenko or jessops are all pretty much the same. There's no glass in them so no IQ difference.
 
Hello again

I can't seem to get the Jessop's extension tubes to work with my canon 100 - 400 lens. It tries to Autofocus but won't. I thought these tubes still allowed auto focusing... am I doing something wrong?
 
When I had my 100-400 I used tubes quite often. I found the best way to use them was manual focus as they really did hunt. The 100-400 is well documented for liking good light. Each tube looses you light and so the ability to focus decreases.
 
swag72 said:
When I had my 100-400 I used tubes quite often. I found the best way to use them was manual focus as they really did hunt. The 100-400 is well documented for liking good light. Each tube looses you light and so the ability to focus decreases.
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Ah ok. So it wouldn't help to get different tubes?

The tubes say they are for "EFs" lenses but the 100 - 400 is an EF (have I got that the right way round?) - could that be it?
 
ukphd said:
Ah ok. So it wouldn't help to get different tubes?

The tubes say they are for "EFs" lenses but the 100 - 400 is an EF (have I got that the right way round?) - could that be it?
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I though they were OK with EF lens' but I could be wrong. I've got Kenko tubes and they work with my EF lens' not sure I ever tried them with EF-S :shrug:
 
ukphd said:
Ah ok. So it wouldn't help to get different tubes?

The tubes say they are for "EFs" lenses but the 100 - 400 is an EF (have I got that the right way round?) - could that be it?
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How close are you to the subject? Try getting closer - see if it manages to focus. I can only use one at a time or the 12mm & 20mm to AF once I start stacking it just constantly hunts. To be honest, it's much easier to manual focus - or move the camera backwards or forwards ever so slightly.

Edit; regarding the filters. I picked up an Cokin ND Grad kit + 67mm adaptor ring from Amazon for around £65 delivered the next day. Came with ND2, ND4 & ND8. Quite happy with it so far, though I haven't really had time to play with it due to work.
 
Thanks everyone.
I'll have another play in the morning - perhaps I'm not focusing close enough. I'm new to these tubes so it's not something I've tried before
:)

ETA: thanks for the tip about the filters :)
 
ukphd said:
Thanks everyone.
I'll have another play in the morning - perhaps I'm not focusing close enough. I'm new to these tubes so it's not something I've tried before
:)

ETA: thanks for the tip about the filters :)
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I had the same problem when I first tried them, you more than likely need to get ALOT closer to your subjects, however i've only been using the 18-70mm kit lens with tubes @ 70mm
 
lolism said:
I had the same problem when I first tried them, you more than likely need to get ALOT closer to your subjects, however i've only been using the 18-70mm kit lens with tubes @ 70mm
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Yep - it works now! I had no idea how close I had to get :D I'm such a plonker!
I managed to get the 100 - 400 lens to work with the smallest tube. I'll try with my kit lens later I think but all seems ok now!

Thanks everyone :thumbs:
 
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