Will the Canon EF 25 II Extension Tube increase focal distance for my telephoto lens? Will I be able to see further with it?
182476
No, if you want to look further you want a teleconverter - http://www.amazon.com/s/ref=nb_sb_ss_i_1_10?url=search-alias%3Delectronics&field-keywords;=canon%20teleconverter&sprefix;=canon+tele%2Celectronics%2C283
182477
No this is to increase the zoom for macro photography. It does not work with a telephoto lens, the camera will not be able to focus. You would need to look into getting a telephoto extender
182478
You can't see farther. The extension tube allows lenses to focus closer to the camera, that's all. It allows you to get closer to the subject than you normally would. Its application is thus macro photography.
600303
A diopter adds glass in front of your lens so it may affect image quality depending on how good it is. An extension tube has no glass but simply moves your lens away from the sensor changing the magnification and focal distance. I prefer an extension tube. Be sure the extension tube you buy passes the electronic signal through for auto focus. Hope this helps!
201532
I do not have a full frame camera sensor. My Zoom goes to 35mm equivalent of 375 mm however. At full zoom, I still have a reasonable focal length (for macro that is) of a half inch or so. I have to shoot about 40 inches away from a subject to be able to focus (which is actually good for living things that might scare getting in too close). The EF 25 might have a very narrow FOV, so I chose the 12 mm extension tube instead and am happy with it.
1529200
I have a Canon 70-200 MM f/4.0 L lens and a 300 M f/4.0 L Lens and my 1.4xII extender works on both lenses. I cannot specifically comment on your lens. I believe this or any Canon Extender will not work a on a lens ( L or consumer level) that has at its highest focal range less than 100 MM in reach. I am also not sure if the Extender II will work on older lenses where Extender I's did work . But don't just rely on my feedback I suggest you do research from professional lens review sites, the manufacturer specs and customer surveys from Amazon and B+H -as you are doing now. I do want to add that as one other responder mentioned-- an extender will not work in manual mode. I have a Canon 70-200 MM f/4.0 L lens and a 300 M f/4.0 L Lens and my 1.4xII extender works on both lenses. I cannot specifically comment on your lens. I believe this or any Canon Extender will not work a on a lens ( L or consumer level) that has at its highest focal range less than 100 MM in reach. I am also not sure if the Extender II will work on older lenses where Extender I's did work . But don't just rely on my feedback I suggest you do research from professional lens review sites, the manufacturer specs and customer surveys from Amazon and B+H -as you are doing now. I do want... » Read More I have a Canon 70-200 MM f/4.0 L lens and a 300 M f/4.0 L Lens and my 1.4xII extender works on both lenses. I cannot specifically comment on your lens. I believe this or any Canon Extender will not work a on a lens ( L or consumer level) that has at its highest focal range less than 100 MM in reach. I am also not sure if the Extender II will work on older lenses where Extender I's did work . But don't just rely on my feedback I suggest you do research from professional lens review sites, the manufacturer specs and customer surveys from Amazon and B+H -as you are doing now. I do want to add that as one other responder mentioned-- an extender will not work in manual mode. « Show Less
2186827
Hi Carlos, Just a slight improvement and longer focal range. If you want a noticeable improvement on image quality, we recommend using prime lenses. -Anthony
753357
Extension tubes are best used with a short fixed lens they go between the camera and the lens giving greater distance from the sensor thus greater magification, they don't work well with longer lenses or telephoto lenses. You also need to have a camera that has the ability to allow you to change lenses. Macro filters work best with longer lenses and telephoto lenses as the longer lenses length intensifies their magnification its best to get fairly good macro lenses I have these and they work well but macro lenses can effect IQ hope this helps you decide
1884588
I have used the Canon EF 100-400mm f/4.5-5.6L IS several times in Baja to take pictures of the moon rising over the mountains east of my house. This lense makes the moonlarger and clearer than my 40-200mm. I have tried the 2x extender but did not have my tripod set up when I used the 2x. I used a remote shutter release all the times before that and it gives me clearer photos. hope this helps.
2219452
I agree with "sammy". Even if you get close enough to your target, whether through the use of a blind or other means, the lens quality from the 70-300 to the EF series lenses is considerable. Lens quality aside, the ability to "get close" without "being close" is one of the keys to great wildlife photography. The further away from an animal or bird you are, the more likely it will remain calm and stick around. While most of the Canon fixed telephoto lenses in the EF series remain out of reach for all but the dedicated professional, the zoom lenses in the series are reasonably priced and provide excellent results. Additionally, the extra 100mm on the 100-400 will prove to be very useful, especially around skittish wildlife like hawks and other raptors, and dangerous big game such as bears, elk and moose.
160270
I'm not a G series owner "yet", but I think there are very few real choices for lenses. The 45-200 is the most likely choice for telephoto. And the 20mm/f1.7 "pancake" for indoors/low light. I'd think the lense you have is probably the better overall for average use, especially if the EZ zoom feature works as well as in the FZ series. I would think you could reach @150mm at 5EZ. The EZ zoom feature is supposed to be able to double the focal length, bringing the 14-45 (28-90) to 28-90 (56-180). And it is "free". Unless you need the long reach of the 45-200mm (90-400mm), which I can't do without, why spend the money?
677223
Short answer from me is no! I purchased the extender for my 70-200 f2.8 and it works perfectly. I tried it on my 100-400 4-5.6 lens just out of curiosity and the auto focus did not work. I did not play with it much on the 400. Perhaps others have made it work but not me. Hope this helps you...
2025668
Depending on your barlow's quality, yes. Image quality will improve as you effectively double the focal ratio of the system, making aberrations lens noticeable. However this higher focal ratio will require 2x the exposure length if using the lens T-adapter for photography. It will also reduce true field of view, which combined with the narrow apparent field of view of this eyepiece will give you more of the "looking down a paper tube" view.
537012
Thanks a million, Tech.I cut teeth on a Pentax K1000. My zoom lens went up to 200/250mm. When I needed a long range I used what would be similar to an Opteka 500mm telephoto cannon lens. If you have a steady hand and can pan well you can get action shots with it. I have some amazing Air Force Thunderbird and Navy Blue Angels shots (when they visited Chas. Air Force base back in the day).I was hoping a teleconverter would get me close to this strength of magnification while keeping AF. An Opteka 500mm MF might be a cheap solution to getting to power I need. I'm just not sure if, with the megapixels the Canon can pump, the shots would be acceptable.Thanks for your time.Peace Thanks a million, Tech.I cut teeth on a Pentax K1000. My zoom lens went up to 200/250mm. When I needed a long range I used what would be similar to an Opteka 500mm telephoto cannon lens. If you have a steady hand and can pan well you can get action shots with it. I have some amazing Air Force Thunderbird and Navy Blue Angels shots (when they visited Chas. Air Force base back in the day).I was hoping a teleconverter would get me close to this strength of magnification while keeping AF. An Opteka 500mm MF might be a cheap solution to getting to power I need. I'm just... » Read More Thanks a million, Tech.I cut teeth on a Pentax K1000. My zoom lens went up to 200/250mm. When I needed a long range I used what would be similar to an Opteka 500mm telephoto cannon lens. If you have a steady hand and can pan well you can get action shots with it. I have some amazing Air Force Thunderbird and Navy Blue Angels shots (when they visited Chas. Air Force base back in the day).I was hoping a teleconverter would get me close to this strength of magnification while keeping AF. An Opteka 500mm MF might be a cheap solution to getting to power I need. I'm just not sure if, with the megapixels the Canon can pump, the shots would be acceptable.Thanks for your time.Peace « Show Less
1380651
The Kenko Extension tubes have the electronics that pass through to the lens, so yes, the IS and AF will work. Other brand extension tubes that are cheaper don't have the electronics pass through them so the lens does not get power and therefore, no AF and no IS. I've used my Kenko tubes for a few months now with my Canon EF-S lens and they work great.
1427354
You can't use this lens with a teleconvertor for doing macro. You'll need a extension tubes, you can search on amazon for "extension tubes" and it will show you the options. One major gripe is you'll lose auto focus (AF), you'll have to manual focus (MF).
1485452
I own all three. Yes, 'Live View' (if that's what you meant by 'Live Mode') works when the three are used together. Keep in mind, your AF will be slower and you will need lots of light. You might also be interested in my inquiry with Canon prior to my purchase. It follows... Thank you for contacting Canon product support regarding the EF 100-400mm f/4.5-5.6L IS USM lens. Yes, the EF 100-400mm f/4.5-5.6L IS USM will work with both cameras, and the extenders will work with both cameras, but there is a limitation that you do need to be aware of. When using the EF Extender 1.4x III or 2.0x III on most of our EOS cameras, the camera will not be able to autofocus if the new maximum aperture after the extender is smaller than f/5.6. For instance, if you have a lens that has an aperture range of f/4.5-5.6, adding the 1.4x extender changes the maximum aperture by 1 stop, resulting in an aperture range of f/6.3-8.0. Likewise, the 2.0x extender pushes the aperture range up by two stops, to f/9-11. Because of the reduced amount of light entering the camera and larger depth of field due to the reduced aperture, the camera's autofocus system cannot operate. For proper AF operation, you will need a lens with a maximum aperture of f/4 or better with the 1.4x extender and f/2.8 or better for the 2.0x extender. The only exception to these rules is the EOS 1D series and the EOS 5D Mark III, which retains autofocusing from f/5.6 to f/8 at the center point only. Please let us know if we can be of any further assistance with your EF 100-400mm f/4.5-5.6L IS USM. Thank you for choosing Canon. Sincerely, Dirk Technical Support Representative
473926
I'm getting ready to order the 400mm. I already have the 70-200L 2.8 IS and if I wanted the extra reach with zoom, I could put my 1.4x teleconverter on it, making it a [roughly] 100-280 f4.0. I don't have the 100-400 to compare, but I'd guess the sharpness is about the same between the 100-400 and the 70-200 + 1.4x. I still wouldn't have the reach between 280-400 but I'd have the sharpness when I need it. I can always attempt to move my feet to frame a subject with a prime if I'm too close. Read the reviews and decide for yourself.
1380650
I don't see why it would not work. The IS in a long lens is not affected by the extension tubes as far as I can tell. If you're using a macro lens or a reverse-mounted lens, you would not have IS anyway.