E-P1 with 20 f/1.7

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Archive 2009 · E-P1 with 20 f/1.7

Jman13
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p.1 #1 · E-P1 with 20 f/1.7

I got my 20 f/1.7 today. So far, I'm really liking it. Focus is actually a bit slower than the 17/2.8, but it's fast enough for most stuff. It's optically superior, though. At f/1.7, the 20mm is sharper than the 17 at any aperture, and it does well at infinity too, which my 17 struggles with (I find the 17 very sharp close up, but it diminishes further away).

Some quick test pics. Crappy, dull, overcast day today, so nothing spectacular (and I didn't have all that much time to explore). Very impressed with the optics of this lens. It's nearly as sharp wide open as it is stopped down. Bokeh is very nice...best of the 3 m4/3 lenses I own. Purple fringing can be pretty bad at the corners on high contrast subjects, but I was mostly able to correct it in lightroom. It's really the only weakness of the lens that I can see so far. Very impressed.

The city, with a not so nice warning by the river, @ f/1.8:

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Self portrait. Since I couldn't see where I was aiming, it locked on my mouth rather than my eyes, so that's the sharpest part, though my glasses are still in the DOF. This is wide open:

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100% crop:

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And finally a little bokeh test. Also wide open:

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Oct 16, 2009 at 07:56 PM

mawz
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p.1 #2 · E-P1 with 20 f/1.7

Damn, I need to get the 20. Those are some nice samples

Note on a G series body, the 20 does AF faster than the 17, although both are reasonably fast (I've got the 17 on my G1 now, played some with the GF1/20 combo). The E-P1's AF system is completely different.

Oct 16, 2009 at 08:04 PM

alexandre
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p.1 #3 · E-P1 with 20 f/1.7

Hi Jordan,

If you can, please post a lanscape-type pic with some 100% crops so we can see how good it is @ infinity.

Thanks
Alexandre

Oct 16, 2009 at 08:53 PM

Sr.Cordeiro
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p.1 #4 · E-P1 with 20 f/1.7

I got to get that lens. I'm currently using the OM 18mm and OM 24mm f/2.8 on my E-P1. The panasonic 20mm is right in the middle of the two so they will become obsolete (but still be used on the 5D2

Oct 16, 2009 at 10:00 PM

Jman13
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p.1 #5 · E-P1 with 20 f/1.7

alexandre wrote:
Hi Jordan,

If you can, please post a lanscape-type pic with some 100% crops so we can see how good it is @ infinity.

Thanks
Alexandre

Here's a quick snap:

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100% crop straight out of camera. Fairly good for the price. It's not going to challenge my 17-40L on the 1Ds II, but it's not bad.

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Oct 17, 2009 at 12:06 AM

poisonpill
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p.1 #6 · E-P1 with 20 f/1.7

can you manually change the focus and aperture while shooting videos with this lens?

Oct 17, 2009 at 02:03 AM

Jman13
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p.1 #7 · E-P1 with 20 f/1.7

Focus, yes, aperture, no. Though I can do both with my 40/1.4 Nokton, which I prefer to any AF lens for video work.

Oct 17, 2009 at 02:10 AM

Mike Yamin
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p.1 #8 · E-P1 with 20 f/1.7

This lens looks pretty darn good. Is there any way to mount it on a regular (not micro) four thirds camera somehow? I'm thinking no...

Oct 17, 2009 at 04:24 AM

olyacme
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p.1 #9 · E-P1 with 20 f/1.7

Mike Yamin wrote:
This lens looks pretty darn good. Is there any way to mount it on a regular (not micro) four thirds camera somehow? I'm thinking no...

Correct. Compat runs from FT to µFT, but due to the shortened register it doesn't run back the other way.

The closest equivalent you'll find in FT is the PanaLeica 25/1.4, which is a great performer but rare, expensive, and anything but a pancake.

Oct 17, 2009 at 07:29 AM

Makten
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p.1 #10 · E-P1 with 20 f/1.7

Looks good! Did you correct distortion in the "landscape" shot? According to Dpreview the 20/1.7 distorts quite alot, which is compensated for with Panasonic software or in-camera wizardry.

Any chance you could portrait the camera with lens attached? It seems to be a bit larger than the 17/2.8 in diameter.

Oct 17, 2009 at 05:30 PM

mawz
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p.1 #11 · E-P1 with 20 f/1.7

Makten wrote:
Looks good! Did you correct distortion in the "landscape" shot? According to Dpreview the 20/1.7 distorts quite alot, which is compensated for with Panasonic software or in-camera wizardry.

Any chance you could portrait the camera with lens attached? It seems to be a bit larger than the 17/2.8 in diameter.

DPReview noted specifically that the 20/1.7 distorts significantly less than any other m43 lens (around 2.6%) although both the G series and the E-P1 normally correct for this (as does ACR/LR and SilkyPix).

Oct 17, 2009 at 05:45 PM

Makten
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p.1 #12 · E-P1 with 20 f/1.7

mawz wrote:
DPReview noted specifically that the 20/1.7 distorts significantly less than any other m43 lens (around 2.6%) although both the G series and the E-P1 normally correct for this (as does ACR/LR and SilkyPix).

Well, 2.6% is much for the angle of view, in my opinion. The 17/2.8 is useless without correction. But since there are no correction (I suppose?) when using a Panasonic lens on an Olympus camera, distortion could be an issue.

Edit: Post correction of distortion means you'll have to crop the image. I don't like that, even if I can live with it.

Oct 17, 2009 at 05:50 PM

Jman13
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p.1 #13 · E-P1 with 20 f/1.7

The E-P1 does distortion correction on the 20/1.7...the landscape shot has no postprocessing other than a resize.

Oct 17, 2009 at 06:03 PM

mawz
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p.1 #14 · E-P1 with 20 f/1.7

Makten wrote:
mawz wrote:
DPReview noted specifically that the 20/1.7 distorts significantly less than any other m43 lens (around 2.6%) although both the G series and the E-P1 normally correct for this (as does ACR/LR and SilkyPix).

Well, 2.6% is much for the angle of view, in my opinion. The 17/2.8 is useless without correction. But since there are no correction (I suppose?) when using a Panasonic lens on an Olympus camera, distortion could be an issue.

Edit: Post correction of distortion means you'll have to crop the image. I don't like that, even if I can live with it.

The E-P1, like the G series, does correction with all m43 lenses. The difference is that the G series does CA and distortion correction while the E-P1 only does distortion correction.

ACR/LR and SilkyPix (as well as Olympus Studio, if you're a masochist) do automatic distortion correction for all m43 lenses on all m43 bodies.

Oct 17, 2009 at 06:21 PM

brainiac
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p.1 #15 · E-P1 with 20 f/1.7

Does Panasonic bundle a raw developer with CA and distortion correction? The GF1 is already expensive without having to update Photoshop from my ancient version...

Oct 17, 2009 at 07:16 PM

picnic
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p.1 #16 · E-P1 with 20 f/1.7

Silkypix comes with the Panny cameras. I've never used it, but have been told it reads the RAW infor for CA and lens distortion.

Oct 17, 2009 at 08:34 PM

mawz
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p.1 #17 · E-P1 with 20 f/1.7

brainiac wrote:
Does Panasonic bundle a raw developer with CA and distortion correction? The GF1 is already expensive without having to update Photoshop from my ancient version...

Yes, it comes with SilkyPix but as long as you have a version of PS that supports ACR (CS and later) you can get the correction via the latest version of Adobe DNG converter (just be sure to set it to ACR 2.4 and Later for the compatibility settings).

I personally use CS3 and use DNG converter to get support for my E-30 and G1.

Oct 17, 2009 at 10:12 PM

Jman13
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p.1 #18 · E-P1 with 20 f/1.7

Ok, so I think I love this lens. Took it out for some night shooting tonight, and so shot almost entirely at f/1.7, and it performed admirably. Bright light sources get some blooming, but overall not too bad in most cases. VERY sharp, and with the IS in the E-P1, I was able to keep ISO down (the bridge shot is at ISO 800 and 1/15sec, the church tower is ISO 1600 at 1/8 sec).

Lane Avenue Bridge with Geese Crossing (OSU Campus):

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Columbus Dispatch Building:

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Trinity Church:

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Oct 18, 2009 at 04:56 AM

Makten
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p.1 #19 · E-P1 with 20 f/1.7

mawz wrote:
The E-P1, like the G series, does correction with all m43 lenses.

That's great news! I had no idea.

ACR/LR and SilkyPix (as well as Olympus Studio, if you're a masochist) do automatic distortion correction for all m43 lenses on all m43 bodies.

Not on my computer. The 17/2.8 distorts like hell, and it's very visible in ACR.

Oct 18, 2009 at 09:56 AM

andrewd01
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p.1 #20 · E-P1 with 20 f/1.7

mawz wrote:
brainiac wrote:
Does Panasonic bundle a raw developer with CA and distortion correction? The GF1 is already expensive without having to update Photoshop from my ancient version...

Yes, it comes with SilkyPix but as long as you have a version of PS that supports ACR (CS and later) you can get the correction via the latest version of Adobe DNG converter (just be sure to set it to ACR 2.4 and Later for the compatibility settings).

I personally use CS3 and use DNG converter to get support for my E-30 and G1.

Do you prefer the results from CS3 over SilkyPix? I have a G1 but haven't tried processing in CS3. Wasn't overly impressed from the results from SilkyPix.

Oct 18, 2009 at 10:20 AM

mawz
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p.1 #21 · E-P1 with 20 f/1.7

andrewd01 wrote:
mawz wrote:

Yes, it comes with SilkyPix but as long as you have a version of PS that supports ACR (CS and later) you can get the correction via the latest version of Adobe DNG converter (just be sure to set it to ACR 2.4 and Later for the compatibility settings).

I personally use CS3 and use DNG converter to get support for my E-30 and G1.

Do you prefer the results from CS3 over SilkyPix? I have a G1 but haven't tried processing in CS3. Wasn't overly impressed from the results from SilkyPix.

Having used SilkyPix in the past, it didn't even get installed when I got the G1. I'm not willing to deal with its poor performance and interface when I already had CS3 and knew it did a good job with conversions.

Oct 18, 2009 at 12:38 PM

mawz
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p.1 #22 · E-P1 with 20 f/1.7

Makten wrote:
mawz wrote:
ACR/LR and SilkyPix (as well as Olympus Studio, if you're a masochist) do automatic distortion correction for all m43 lenses on all m43 bodies.

Not on my computer. The 17/2.8 distorts like hell, and it's very visible in ACR.

Hmm, that's odd. Shots from the 17 are certainly corrected in ACR with the G1. I thought that the E-P1 was being treated the same way. Perhaps not.

Oct 18, 2009 at 12:40 PM

Sam Bennett
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p.1 #23 · E-P1 with 20 f/1.7

The 20mm really couldn't be much better, IMO. Sharp, contrasty, buttery-smooth bokeh, close focusing and it's tiny? What more could you ask for? Well, one thing - a bayonet-mount, reversible hood would have made it perfect.

Oct 18, 2009 at 05:38 PM

Makten
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p.1 #24 · E-P1 with 20 f/1.7

Sam Bennett wrote:
The 20mm really couldn't be much better, IMO. Sharp, contrasty, buttery-smooth bokeh, close focusing and it's tiny? What more could you ask for? Well, one thing - a bayonet-mount, reversible hood would have made it perfect.

I'd want it to be at least one stop faster and even smaller, which should be possible. The barrel is huge compared to the entrance pupil. Ugly, to say the least.

Oct 18, 2009 at 06:54 PM

Jman13
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p.1 #25 · E-P1 with 20 f/1.7

Continuing to dig this lens.

Wide open:

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100% crop:

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My daughter, wide open at ISO 1600:

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Oct 21, 2009 at 12:05 AM


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