Canon EF 50mm f/1.8 STM

[Canon Rumors]

The <a href="http://www.canonrumors.com/2015/02/new-50mm-70-300-coming-soon-cr2/" target="_blank">long rumored Canon EF 50mm f/1.8 STM</a> has finally made an appearance and will be announced very soon.</p>
<p>SPECIFICATIONS (Google Translated)</p>
<ul>
<li><span class="notranslate">Lens arrangement 5-group, six (Construction: 6 elements in 5 groups)</span></li>
<li><span class="notranslate">Full-frame compatible</span></li>
<li><span class="notranslate">Digital optimized coating</span></li>
<li><span class="notranslate">STM/Stepping motor</span></li>
<li><span class="notranslate">Full-time manual focus</span></li>
<li><span class="notranslate">Length: 39.3mm</span></li>
<li><span class="notranslate">Weight: 160g (1.55″)</span></li>
<li>49mm filter thread</li>
</ul>
<p>Source: [<a href="http://digicame-info.com/2015/05/ef50mm-f18-stm-1.html" target="_blank">DCI</a>]</p>
<p>Below are more images that appeared on our forum yesterday showing the EF 50mm f/1.8 STM.</p>

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[Menace]

I'll take one

 

[jebrady03]

This will likely be an excellent lens, at a low price point. It also, IMO, still leaves room for an EF 50mm f/1.4 IS USM. Good work Canon.

 

[fon-foto]

Lovely... it's almost a pancake and will compliment my lightweight 100D+24mm nicely

 

[NorbR]

Let's see the price ... but if it's in the expected range, there's a good chance that this lens will eventually end up in my bag.

And while I will keep hoping for small and fast EF-M primes, this one should do nicely in the meantime on the M3.

 

[Sporgon]

Hmmm....sounds as if optically it is going to be very similar to the old version. I'll be interested to see a block diagram and if the two bonded elements ( the only two in a group) have a concave / convex radius on the bonded surface ( unlike the 50/1.4 where it is flat). This would give it a better in focus to out of focus transition ( render), but it is much more expensive to produce - traditionally. Maybe the latest manufacturing techniques have made this more achievable on a budget.

 

[msowsun]

Here is the latest photo. No IS, and no focus distance window.

 

[ajfotofilmagem]

I would call it "almost pancake". It seems a decent replacement for the plastic fantastic.

If the image quality wide open is as good as 40mm STM I would be happy.

 

[albron00]

The price is gonna be around $200.

 

[Maximilian]

Sounds like the nice entry-level prime or for those with needs for small size/price we'd expected.
Let's hope that it will be a real IQ performer like some other STM lenses.
And then let's hope that there will come next some other expected or hoped for 50 mm lenses.

 

[gutteg]

49mm filter diameter according to the pics

 

[hachu21]

"Full time manual focus" => Mechanical or fly-by-wire like the ef-m ones? ???

 

[Emil]

Looking forward to this lens. It will replace my 50mm 1.4 USM which I've had to repair twice myself.

 

[K]

It is nice to see that it has a metal mount.

Let's hope it is priced at $200 or less.

 

[jeffa4444]

Nice to see they have gone back to a metal mount that is the very reason MK1 versions sold for more than the newer MK2 with a plastic mount. Ive little need for a faster 50mm and been holding off hoping they would replace the nifty fifty now it seems its coming hopefully the IQ holds-up.

 

[exquisitor]

Looking forward to this lens. It will replace my 50mm 1.4 USM which I've had to repair twice myself.

I would do the same, but if it can focus manually without power. The 50 f/1.4 still has advantages and Canon definitely will try to differentiate the new 50 STM even more to protect 50 f/1.4 sells. Otherwise they need an update for 50 f/1.4 ... or to discontinue it.

 

[funkboy]

At least the lack of IS will keep it cheap (hopefully under $200).

With a little luck we'll get an IS option/version later (which I'll be all over).

 

[SPKoko]

I am wondering about the number of aperture blades. If it is 5 like the old MKII, it's a no-go for me... 7 blades like the 40mm or the Yonguo 50mm would be very nice, though...

It's quite surprising that this very important specification has not been leaked like the others... Maybe we should not expect good news here :-\

 

[NorbR]

"Full time manual focus" => Mechanical or fly-by-wire like the ef-m ones? ???

As far as I know, STM means fly-by-wire ... at least that has been the case for all STM lenses released so far.

That being said, I don't know enough about the technology to know whether it's even possible to get a mechanical coupling with an STM motor. But for this lens, I fully expect fly-by-wire focusing, like the one found in the pancake (i.e. awful).

 

[SwampYankee]

not sure this improves upon my 50mm 1.8 first generation metal mount. I bet the focus is a lot fast. My only gripe with my 28 year lens is the 5 aperture blades. Pentagonal bokeh