Canon EF 75 - 300 extender

big.rich1976

big.rich1976

big.rich1976

Associate
Joined
21 Sep 2006
Posts
168
Location
Whittlesey
Hi All,

I am a relative newcomer to DSLR world. Finding my feet but my setup is nearly complete. What i want to know is if i can use a 2x extender with my canon 75-300 telephoto lens. I'm hesitant because it says i need a L type lens, I'm not sure i have this? If someone could help, would be appreciated. My camera is a 600d
Kind Regards
Richard
 
I would guess at no and even if you could, you wouldn't want to.

The lens is F5.6 when you're zoomed all the way so adding a 2x extender will make it F11 so your AF won't work.

2x extenders also lose a lot of image quality so ideally you need a very sharp lens to begin with.

Another hurdle would be that the Canon extenders have a bit that sticks out which prevents them from fitting to most smaller lenses. Some third party extenders like Kenko might fit but it just wouldn't be worse the hassle for the reasons mentioned above.
 
The real question is would you want to? The 75-300mm is a particularly poor lens adding a 2 x extender will only emphasise this further. If it was me I would save my money for a better telephoto either the canon 70-300mm IS USM or the Tamron 70-300 VI USD both of which will offer far superior image quality to you existing lens and with a crop will give better quality images than your 75-300 and any TC combo you manage to make work with it.
 
a1ex2001 said:
The real question is would you want to? The 75-300mm is a particularly poor lens adding a 2 x extender will only emphasise this further. If it was me I would save my money for a better telephoto either the canon 70-300mm IS USM or the Tamron 70-300 VI USD both of which will offer far superior image quality to you existing lens and with a crop will give better quality images than your 75-300 and any TC combo you manage to make work with it.
Click to expand...

Thanks for all the info. I realised that i didnt put the correct lens in the thread title, Anyway it is the 70-300mm IS USM model i actually have. I have recently got into bird watching(the feathered variety) and i do feel i need a lil extra reach on this lens, So could i use a extender on this model, Thanks again for all the feedback.
 
big.rich1976 said:
Thanks for all the info. I realised that i didnt put the correct lens in the thread title, Anyway it is the 70-300mm IS USM model i actually have. I have recently got into bird watching(the feathered variety) and i do feel i need a lil extra reach on this lens, So could i use a extender on this model, Thanks again for all the feedback.
Click to expand...

Same advice, no.

There isn't the optical quality in the lens, the aperture is too slow, the autofocus will suffer too much and you wont get any better results than simply cropping. The extender likely wont even physically fit without modification (i.e. braking it).


Save up for a Tamron/Sigma 150-600mm, Canon 100-400L, Canon 300mm f/4.0L + 1.4xTC.
Otherwise enjoy your lens naked, try to get as close as you can to the subject, and put up with cropping.
 
Genoma said:
I enjoy my lenses naked, but find it difficult to get close to my subjects ... :(
Click to expand...

Yeah when it comes to wildlife photography, people forget that in reality, it's not too dissimilar to hunting.

Some animals will let you get close, either because they're not too fussed about humans or they're actually used to them but wild animals don't really want to be near us.

Need to start hiding in bushes :)
 
That is part of the fun for me, tracking down animals for hours and trying to get as close as possible without them seeing you, or slowly getting them used to you.


Some of the best wildlife photos have required the photographer to spend months at a time just slowly getting the animals used to him so he could get close enough.

Still, the long lenses are needed because A) birds are damn small B), some animals are too dangerous to get close to, C) Some animals it is illegal to approach D) even when you can get close the best photos are often form further away (e.g., even if you can touch the tree a bird is in the best photo will be from some distance back rather than pointing into the sky). E) If you can dedicate 8 hours a day and 7 days a week you just wont get the opportunities the professionals can, so your only hope is to get longer lenses and make do with less than ideal conditions.
 
Genoma said:
It was a being naked joke chaps :)
Click to expand...

But why would you find it difficult to get close to your subjects if we're talking about wildlife?

Your joke was not joky since animals would not care if you were naked lol :P
 
My step dad had a cheap lens and a cheap tele (x2)
I had a quick look. Cropping in was significantly better without the TC
 
You must log in or register to reply here.
Back
Top Bottom