Canon EF 40mm f/2.8 STM Information.

[Canon Rumors]

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<p><strong>Canon EF 40mm f/2.8 STM

</strong>Just discovered the new pancake is also part of the new “STM” family of lenses from Canon.  The lens is also extremely small with a thickness of 22.8mm and weighing in at 130 grams.</p>
<p>Below are a few more images of the lens in comparison to the EF 50 f/1.8 II.</p>
<p><strong>Specifications</strong></p>
<ul>
<li>Focal length / Aperture: 40mm / 1:2.8</li>
<li>Lens Construction: 4 group 6 pieces</li>
<li>Closest focusing distance: 0.3m</li>
<li>The maximum magnification ratio: 0.18-fold</li>
<li>Filter diameter: 52mm</li>
<li>The maximum diameter: 68.2mm</li>
<li>Length: 22.8mm</li>
<li>Weight: About 130g</li>
<li>Lens Hood: ES-52 (Not Included)</li>
</ul>
<p> </p>
<div id="attachment_10174" class="wp-caption alignnone" style="width: 585px"><a href="http://www.canonrumors.com/wp-content/uploads/2012/06/pancake.jpg"><img class="size-medium wp-image-10174" title="pancake" src="http://www.canonrumors.com/wp-content/uploads/2012/06/pancake-575x253.jpg" alt="" width="575" height="253" /></a><p class="wp-caption-text">Canon EF 40mm f/2.8 STM</p></div>
<div id="attachment_10175" class="wp-caption alignnone" style="width: 531px"><a href="http://www.canonrumors.com/wp-content/uploads/2012/06/pancakecompare.jpg"><img class="size-full wp-image-10175" title="pancakecompare" src="http://www.canonrumors.com/wp-content/uploads/2012/06/pancakecompare.jpg" alt="" width="521" height="328" /></a><p class="wp-caption-text">Canon EF 50 f/1.8 II compared to the Canon EF 40 f/2.8 STM</p></div>
<div id="attachment_10176" class="wp-caption alignnone" style="width: 585px"><a href="http://www.canonrumors.com/wp-content/uploads/2012/06/pancakeelements.jpg"><img class="size-medium wp-image-10176" title="pancakeelements" src="http://www.canonrumors.com/wp-content/uploads/2012/06/pancakeelements-575x370.jpg" alt="" width="575" height="370" /></a><p class="wp-caption-text">Lens Design of the Canon 40mm f/2.8 STM</p></div>

 

[Etienne]

If it's sharp and contrasty at 2.8, then I'm in.

 

[trulandphoto]

I have never pre-ordered photo equipment. This lens will be my first.

 

[paul13walnut5]

+1 WAAAAAAAANT. Been wanting for years!

 

[Harry Muff]

Forgive my ignorance, but what's special about this? It's only 10mm wider than the 50 and a stop slower. :-\

 

[mememe]

Forgive my ignorance, but what's special about this? It's only 10mm wider than the 50 and a stop slower. :-\

Its small!

 

[TrumpetPower!]

If you want a really good feel for what this will be like, lock together a body cap and a rear lens cap and hold them flush against the lens mount of your camera.

Indeed, if it's really under $200, I can easily see it becoming a popular choice for a replacement body cap! think about it...you can either cap the body with a bulky lens (even the Plastic Fantastic is awkward as a body cap), a functionless piece of plastic, or an actual lens that's right about at the textbook "normal" focal length for full frame.

I'll personally wait for some lens reviews...but if the IQ wide open doesn't suck, I can easily see getting at least one per body.

b&

 

[phemark]

I need a physics lesson:

Why cant they put bigger glass in it, and make it pancake size 40mm F0.5 or similar?

 

[mememe]

I need a physics lesson:

Why cant they put bigger glass in it, and make it pancake size 40mm F0.5 or similar?

I guess bigger glass means longer Lens

 

[dswatson83]

Please canon, stop with these lenses that don't make sense. How many people called Canon to complain that the 50mm f/1.8 or 35mm f/2 were too big and heavy. Seriously, how about addressing the ACTUAL problems. In 22 years, you can't make an improved 35mm f/2 with better focusing and a sharper image? Instead you shrink the 50mm f/1.8 for $100 more & make it 1 stop slower? Who is approving these lenses. Canon, you tell me you can't fit IS in a 24-70mm f/2.8 and then Tamron does it. Rather than improving the 2+ decade old fast primes like the 50mm f/1.4, 28mm f/1.8 & 35mm f/2 that almost every photographer who doesn't have the L versions use (and all of those lenses could be better), you put IS in f/2.8 primes?????. The primes we all love are all 2-3 decades old! Please Canon, improve them and stop wasting your time on stupid designs of lenses no one asked for.

 

[Harry Muff]

$200 to replace the plastic caps? No thanks.

 

[preppyak]

Forgive my ignorance, but what's special about this? It's only 10mm wider than the 50 and a stop slower. :-\

The STM would, presumably, make the auto-focus during video very quiet. NOW this lens makes sense. The 18-135 covers your general video use, but for someone who wants lower-light handling while shooting video (but still AF), they could use this. Whereas the AF for the 35mm f/2 and 50mm f/1.8 are loud and will destroy your audio.

Still makes it a silly lens, but, at least it makes sense

 

[phemark]

I need a physics lesson:

Why cant they put bigger glass in it, and make it pancake size 40mm F0.5 or similar?

I guess bigger glass means longer Lens

But why it has to be longer? Cant they bend light sharply enough to use big glass in a very short lens? What are physics restrictions to this? (Just curious , an article regarding this would be an interesting read)

 

[Stevo2008]

Forgive my ignorance, but what's special about this? It's only 10mm wider than the 50 and a stop slower. :-\

Three things better than 50mm 1.8:
- Full time manual focus
- Quiet autofocus
- 7 circular blades = great bokeh!

This will be my first pre-order of any canon (2nd of all electronics - 1st was iPad).

 

[dswatson83]

Forgive my ignorance, but what's special about this? It's only 10mm wider than the 50 and a stop slower. :-\

Its small!

The 50mm f/1.8 & 35mm f/2 are super light and hardly stick out past the grip, are smaller in diameter than the camera, and are a stop faster. What is the point of making it smaller than the grip? Is there really a Canon DSLR owner out there that is pissed because the 50mm f/1.8 & 35mm f/2 are just too large and heavy?

 

[preppyak]

Three things better than 50mm 1.8:
- Full time manual focus
- 7 circular blades = great bokeh!

Can you source either of those details? I don't see it in any of the previous rumors on the lens that it would have FTM or any details regarding blades, etc.

 

[hmmm]

I've got a bad feeling about the price of these new STM lenses....

I sure hope this pancake comes in at about $200. We could start a pricing pool -- unfortunately my guess would be $400.

Sure hope $200 wins the pool!

 

[Stevo2008]

Three things better than 50mm 1.8:
- Full time manual focus
- 7 circular blades = great bokeh!

Can you source either of those details? I don't see it in any of the previous rumors on the lens that it would have FTM or any details regarding blades, etc.

Here:
http://translate.google.com/translate?sl=auto&tl=en&u=http%3A//digicame-info.com/2012/06/ef40mm-f28-stmef-s18-135mm-f35.html%0A

 

[preppyak]

Here:
http://translate.google.com/translate?sl=auto&tl=en&u=http%3A//digicame-info.com/2012/06/ef40mm-f28-stmef-s18-135mm-f35.html%0A

Impressive. Wouldn't have expected FTM from this lens.

Sure hope $200 wins the pool!

The rumors to this point have been $200 or <$200, but obviously we'll see. A <$200 lens that does FTM and has better aperture blades than the 50mm f/1,8 would have be kind of surprising...since their other lens announcements have been less affordable relative to what they offer

 

[Bob Howland]

Let's see. This is full frame lens? STM is quiet during focusing, presumably so that the camera can focus while taking videos. (Then why are the 24 f/2.8 IS and 28 f/2.8 IS lenses USM, not STM? Because they're IS lenses perhaps?) The 5D3 can't focus while taking videos, but there is a firmware upgrade due for the 5D3, really soon now, with the rumor that features will be added. Dare we hope?

And while you're at it, Canon, make exposure compensation and automatic exposure bracketing functional in the 5D3 in manual mode with auto ISO. The present situation is inexcusable.