Dead easy way to convert from EF-S lens to EF. AND BACK!

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<p>Its almost as much a waste of time as buying a Nikon to Canon adapter and running Nikon lenses on your Canon. But some people do</p>

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<p>Really? I use Nikkor lenses all the time. I'm used to manual focus, although my eyes aren't what they were, and unless you're in a hurry, stopping down to meter after focusing is no big deal either. I wouldn't try to shoot fast moving sports with a MF/stop-down lens, to be sure. I also use M42, Exakta, and P6 lenses and each has its use.<br>

Examples of usefulness:<br>

Nikkor 58mm f/1.2- low light where AF isn't so hot anyway. Used it for hand-held pictures in a pictoglyphic cave lit up with a generator and some lights. Flash was unusable because of reflections from glitter in the rock.</p>

<p>PC-Nikkor 35mm perspective control lens. Works just fine all manually just as it was on the Nikons, and it's already in my kit bag so works fine on a 5D "full frame".</p>

<p>Reflex-Nikkor 500mm f/8 (it only has one stop open or shut anyhow). On a monopod you can learn to focus very quickly for animal shots. on an APS-C body it's even longer.</p>

<p>Vivitar Qdos Anaglyphic 3-D 70-210mm in a C/Y adapter. Nothing like it anywhere else, unless you roll your own.<br /> well I could go on, but if you haven't tried it, don't call it <em>useless</em> . Some of us make good use of more than just Canon lenses ;)</p>

<p>Interesting how one thinks when your back is against the wall. I would have thought 4 images merged together may have been easier than butchering a smaller image circle lens for a larger format. But if pro will just get another lens later to keep tax down, x1.6 >x1.3 not a huge amount tho. certainly did not have backup FL. problably ok for a bit of fun ;-)</p>

<p>G`day Bill, hope the dust clearin for you down there, got into everything this way</p><div></div>

<p>Chris: Hi! <br>

Red Dust everywhere - fine powder in everything - I reckon I gotta buy a couple of new lenses just in case of damage - and to keep that tax down. <br>

I hope you bought that car, new and before June 30 to get the full benefit<br>

Cheers and beers,<br>

Bill</p>

<p > </p>

 

<p>It may be easy but I'm not willing to risk my gear. Call me chicken, I wouldn't care, but I'd rather buy a 11-16/2.8 instead.</p>

<p>Happy shooting,<br>

Yakim.</p>

 

<p>Just a few points regarding this modification to the 10-22. First, it may be accomplished without the use of pocket knives or pliers shown in some of the linked references. If you adjust the lens out to 22mm you'll be able to insert your finger through the hole in the rear baffle and pull it out. There's even a lip around the hole to help with gripping. Much easier and safer than the other methods shown.<br>

Also, the rear element doesn't protrude beyond the rear metal flange until somewhere between 12 and 14mm zoom. The distance from the rear metal flange to the mounting surface on the lens appears to be the same as with EF lenses, approx. 0.21 inches, so it would seem a good reference point for determining how far the rear lens element is extending into the body when comparing EF-S and EF lenses. On a 20-35 EF lens the rear element actually protrudes beyond the rear flange at the wide end, indicating that contact of the 10-22mm zoomed to 13mm or longer is very unlikely. It's also worth mentioning that the viewfinder displays noticeable cropping in the corners at anything wider than 14mm, so if one insures to zoom so that no cropping is visible in the corners when composing the picture the mirror shouldn't be contacting the rear lens element of a 10-22 EF-S mounted on a FF body. The risk seems minimal, aside from potential user error of not paying attention to the corners. For the occasional ultra-wide shot where corner-to-corner sharpness isn't critical it's an option.</p>

<p>Tried Stephen suggestion, works fine but I will continue with Sigma 12-24mm for ultra wide.</p>

<p>It's much easier to mount a Sigma 10-20mm on a 5D, if that's what you want than it is to mess with a Canon 10-22mm.<br>

The Sigma mounts without any modification on 35mm sensor cameras, and vignettes like crazy, which raises the question of why?</p><div></div>

<p><em>Great stuff. That's why I wouldn't buy a used DSLR via eBay.</em></p>

<p>No, that's why you pay full retail and resell it to me for a fraction of the cost. You're gambling a small risk versus paying pennies on the dollar. And it's only a gamble if the seller won't give your money back, which is unusual. The feedback system works. If it doesn't, you can reverse the charges on your credit card.</p>

<p>This notion that the internet is full of nefarious rip-off artists that damage their equipment in bizzare and exotic ways so they can joyously resell it to you is pretty antiquated. Frankly, it's also a little egotistical.</p>

<p>99% of the sellers out there are just like you and me: They have a camera, and they want to sell it.</p>

<p>The other 1% has bad (or too little) feedback.</p>

<p>-Paul B. Davis</p>

<p>Just adapted my 18-55mm kit lens to work on my non-efs using<br>

http://www.bobatkins.com/photography/tutorials/efs-10d.html<br>

I took the mount off the camera, put the hacksaw in the vice, and worked my way cutting the extra material off. Not the cleanest way but it worked and only took a few minutes all together.<br>

Worked great but left a good sized gap that I'll probably make a plastic cover for to keep dust out. Tried the lens out on an old Rebel X and its usable from about 22-55.</p>

<p>Just in case anyone on here thinks they can slap an EF-S 10-22 onto a 35mm Canon EOS620 or 650, it won't fit. </p>

<p>I figure some may know this already, but this is just good knowledge to keep on spreading.</p>

<p>Basically ef-s lenses only differ from ef lenses due to some additional rubber on the rear end of the ef-s lens. To convert it all you need to do is pull the rubber piece out. Here is what I found on the subject:</p>

<p><a href="Lemons into Lemonade: The 10-22 'EF-S' on a 1D... | Canon DSLR User Group | Flickr">Lemons into Lemonade: The 10-22 'EF-S' on a 1D... | Canon DSLR User Group | Flickr</a></p>

<p>Now you can use great ef-s lenses like the 10-22mm on your full frame lenses. With the 10-22mm, however, you don't want to zoom out past 12mm. Seems the 17-55mm ef-s works without a hitch.</p>

Have you thought about using kenko HD 1.4 extender because it supports ef and efs. My thinking is it should work because it will crop 1.4 and that will eliminate the corner.

Ah, a blast from the past! And contrary to my earlier comment in this thread, today both of my DSLRs (a 20D and a 7D) were bought used via eBay!

 

I think not too many people were crazy enough to wreck their cameras with wacky lens adaptations!