Teleconverter
Feb 22, 2019 14:54:31 #
I have a Canon Zoom lens EF75-300 1:4-5.6 with my Canon EOS and would like use it to get to 600 mm. This would be better then getting a fixed lens and lower cost. Some of the places I asked said that it would not fit my camera. Any suggestions.
Feb 22, 2019 15:01:35 #
RBal wrote:
I have a Canon Zoom lens EF75-300 1:4-5.6 with my Canon EOS and would like use it to get to 600 mm. This would be better then getting a fixed lens and lower cost. Some of the places I asked said that it would not fit my camera. Any suggestions.
The ef75-300 lens is not compatible with a teleconverter. Google your teleconverter/lens compatibility to find the lenses that will be compatible with your teleconverter. FYI, Nikon has the same restrictions, as in not all lenses will work with a teleconverter. You will probably need to buy a 300mm prime to be compatible, and even then, you may lose your autofocus capability and you will lose about 2 stops of light. Teleconverters are nice in a pinch, but they are not very reliable. Just my thoughts on the subject, and through my experience with them.
Feb 22, 2019 15:03:35 #
Your EF 75-300 is not physically compatible with Canon Extenders. It's not a question of fitting the extender to your camera, but rather, fitting the extender to the lens. Third-party extenders (also known as tele-converted) may fit to your lens, but the loss of 2-stops of light will disable the autofocus on all Canon EOS DSLR models where 2-stops above f/5.6 is f/11.
Your best option is another lens that reaches to 600mm in the design of the lens, rather than resorting via an extender, unless your budget allows for L-series lenses like the EF 100-400L II, EF 400 f/5.6L or the EF 300 f/2.8 or f/4. Be sure to review the AF limits of your EOS model, as most Rebel models are limited to lenses at f/5.6 or wider. Extending the L-series lenses above will lose AF on a Rebel body for all the options except the f/2.8 prime, so these lenses also may not be an option depending on your EOS model.
Your best option is another lens that reaches to 600mm in the design of the lens, rather than resorting via an extender, unless your budget allows for L-series lenses like the EF 100-400L II, EF 400 f/5.6L or the EF 300 f/2.8 or f/4. Be sure to review the AF limits of your EOS model, as most Rebel models are limited to lenses at f/5.6 or wider. Extending the L-series lenses above will lose AF on a Rebel body for all the options except the f/2.8 prime, so these lenses also may not be an option depending on your EOS model.
Feb 22, 2019 15:06:49 #
Feb 22, 2019 15:11:00 #
Feb 22, 2019 15:11:52 #
Feb 22, 2019 15:12:23 #
Feb 22, 2019 23:52:16 #
The Canon EF 75-300 is one of their inexpensive kit lenses and it does not perform well with a teleconverter attached to it. There really is no good inexpensive way to get to 600mm and get decent results. You may want to consider a used Sigma 150-600 Contemporary.
Feb 23, 2019 09:48:34 #
RBal wrote:
I have a Canon Zoom lens EF75-300 1:4-5.6 with my Canon EOS and would like use it to get to 600 mm. This would be better then getting a fixed lens and lower cost. Some of the places I asked said that it would not fit my camera. Any suggestions.
What body do you have ?? - A Kenko may "fit" but you will not like the results even IF you do get it to AF Save and get the 400 5.6 L - and make sure you stabilize it - OR, get a high MP body and CROP.
..
Feb 23, 2019 10:19:39 #
a tele converter work best on a top of the line pro lens .the more you magnifies , the worst the picture on consumer lens .Kenko make a descent 1.4[ have one ]
Feb 23, 2019 10:58:31 #
RBal wrote:
I have a Canon Zoom lens EF75-300 1:4-5.6 with my Canon EOS and would like use it to get to 600 mm. This would be better then getting a fixed lens and lower cost. Some of the places I asked said that it would not fit my camera. Any suggestions.
Physically it will connect but you will not be able to use the autofocus since you will lose two stops and the camera will not autofocus at this aperture but it will work. This was with a 2x on a 70-300
Feb 23, 2019 12:43:48 #
RBal wrote:
I have a Canon Zoom lens EF75-300 1:4-5.6 with my Canon EOS and would like use it to get to 600 mm. This would be better then getting a fixed lens and lower cost. Some of the places I asked said that it would not fit my camera. Any suggestions.
Here's a reponse from Photography On The Net:
"You can use the 1.4 or 2x extenders with your 75-300, but you will not have autofocus. Not to mention, the lens will be extremely slow at f8 and f11, respectively. Also, the image quality will be extremely poor. So to answer your question, yes, you can use a converter on your lens, but I doubt you would even want the images that would be taken with the combination."
My person findings are similar. A 1.4x teleconverter yields reasonable results with a good quality lens. You get better results simply upsizing an image to 200% than using a 2x teleconverter!
bwa
Feb 23, 2019 13:34:18 #
RBal wrote:
I have a Canon Zoom lens EF75-300 1:4-5.6 with my Canon EOS and would like use it to get to 600 mm. This would be better then getting a fixed lens and lower cost. Some of the places I asked said that it would not fit my camera. Any suggestions.
It is not that it does not fit your camera, it is that it does not fit your lens! It is not compatible with teleconverters, you be much better off, buying a lens that's 600mm, or goes to 600, you'll be much happier with the results!
Feb 23, 2019 14:07:07 #
larryepage
Loc: North Texas area
There are a number of factors that can prevent teleconverters from physically working with specific lenses. The most common is incompatibility between the front element of the converter and the rear element of the lens.
Specifically, most teleconverters have a front element which protrudes slightly past the lens mount. They cannot mate with a lens which has a rear element that is flush with, or even close to flush with the mounting ring on the lens...the two elements will strike each other and will not allow the two mount rings to come together. The mounted lens must have a rear element that is recessed in the lens body.
There are also other reasons that lenses and converters can be incompatible. Some are optical and may not be apparent just by visual inspection.
Specifically, most teleconverters have a front element which protrudes slightly past the lens mount. They cannot mate with a lens which has a rear element that is flush with, or even close to flush with the mounting ring on the lens...the two elements will strike each other and will not allow the two mount rings to come together. The mounted lens must have a rear element that is recessed in the lens body.
There are also other reasons that lenses and converters can be incompatible. Some are optical and may not be apparent just by visual inspection.
Feb 23, 2019 14:46:58 #
nadelewitz
Loc: Ithaca NY
The only thing "Better" with a teleconverter is less cost than a long lens. In every other way, a lens is better than the extender. Plain and simple.
Assuming, of course, that your lens can even work with a teleconverter, which in your case, doesn't happen.
Assuming, of course, that your lens can even work with a teleconverter, which in your case, doesn't happen.
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