20mm 1.7 sharpness wide open

If your 20mm is not sharp at F1.7 it's either a bad copy or you are doing something wrong. This is mine at F1.7, 1/10th second.



--
It's a known fact that where there's tea there's hope.
Tony
http://the-random-photographer.blogspot.com/
 
If your 20mm is not sharp at F1.7 it's either a bad copy or you are doing something wrong. This is mine at F1.7, 1/10th second.
Your picture only illustrates that your particular copy is OK but doesn't help OP because you are shooting with EPL1 which will result in higher sharpness output with settings in camera that are unknown.
 
If your 20mm is not sharp at F1.7 it's either a bad copy or you are doing something wrong. This is mine at F1.7, 1/10th second.
Your picture only illustrates that your particular copy is OK but doesn't help OP because you are shooting with EPL1 which will result in higher sharpness output with settings in camera that are unknown.
The OP asked if this lens is sharp wide open or if his photo was representative. I've shown it's not. How could I shoot with his lens and not my own? The sharpness setting on my EPL-1 is -1, there are no sharpness artifacts, how much evidence do you need that this lens is sharp wide open?
--
It's a known fact that where there's tea there's hope.
Tony
http://the-random-photographer.blogspot.com/
 
If your 20mm is not sharp at F1.7 it's either a bad copy or you are doing something wrong. This is mine at F1.7, 1/10th second.
Your picture only illustrates that your particular copy is OK but doesn't help OP because you are shooting with EPL1 which will result in higher sharpness output with settings in camera that are unknown.
The OP asked if this lens is sharp wide open or if his photo was representative. I've shown it's not. How could I shoot with his lens and not my own? The sharpness setting on my EPL-1 is -1, there are no sharpness artifacts, how much evidence do you need that this lens is sharp wide open?
I personally do not need evidence 20/1.7 is a sharp lens wide open, I have one and it is sharp, but that doesn't make your sample anything OP can use to conclude anything about his copy, there is a number of reasons one could debate why exactly, starting with fact images from EPL1 are crispier than ones from EP2 (and thus I assume EP3 too) regardless of what lens is used, even when EPL1 has sharpness set to -1.
 
If your 20mm is not sharp at F1.7 it's either a bad copy or you are doing something wrong. This is mine at F1.7, 1/10th second.
Your picture only illustrates that your particular copy is OK but doesn't help OP because you are shooting with EPL1 which will result in higher sharpness output with settings in camera that are unknown.
The OP asked if this lens is sharp wide open or if his photo was representative. I've shown it's not. How could I shoot with his lens and not my own? The sharpness setting on my EPL-1 is -1, there are no sharpness artifacts, how much evidence do you need that this lens is sharp wide open?
I personally do not need evidence 20/1.7 is a sharp lens wide open, I have one and it is sharp, but that doesn't make your sample anything OP can use to conclude anything about his copy, there is a number of reasons one could debate why exactly, starting with fact images from EPL1 are crispier than ones from EP2 (and thus I assume EP3 too) regardless of what lens is used, even when EPL1 has sharpness set to -1.
Well based on your logic then no-one can help the OP as only he owns that particular copy, so what exactly is your point and how do you propose that we overcome this particular hurdle? He has asked if the 20mm F1.7 is sharp and whether his picture is representative of how sharp it can be. Well the answer to the first question is clearly yes on most people's version of this lens. The answer to the second question can only be answered by EP-3 owners and will depend on the strength of the AA filter on this camera.

So to summarise, I have tried to help the OP to answer the first question, yes the 20mm F1.7 lens is clearly sharp wide open. So instead of criticising people who are trying to help him answer his question why don't you do something positive or just button it.
--
It's a known fact that where there's tea there's hope.
Tony
http://the-random-photographer.blogspot.com/
 
If your 20mm is not sharp at F1.7 it's either a bad copy or you are doing something wrong. This is mine at F1.7, 1/10th second.
Your picture only illustrates that your particular copy is OK but doesn't help OP because you are shooting with EPL1 which will result in higher sharpness output with settings in camera that are unknown.
The OP asked if this lens is sharp wide open or if his photo was representative. I've shown it's not. How could I shoot with his lens and not my own? The sharpness setting on my EPL-1 is -1, there are no sharpness artifacts, how much evidence do you need that this lens is sharp wide open?
I personally do not need evidence 20/1.7 is a sharp lens wide open, I have one and it is sharp, but that doesn't make your sample anything OP can use to conclude anything about his copy, there is a number of reasons one could debate why exactly, starting with fact images from EPL1 are crispier than ones from EP2 (and thus I assume EP3 too) regardless of what lens is used, even when EPL1 has sharpness set to -1.
Well based on your logic then no-one can help the OP as only he owns that particular copy, so what exactly is your point and how do you propose that we overcome this particular hurdle? He has asked if the 20mm F1.7 is sharp and whether his picture is representative of how sharp it can be. Well the answer to the first question is clearly yes on most people's version of this lens. The answer to the second question can only be answered by EP-3 owners and will depend on the strength of the AA filter on this camera.

So to summarise, I have tried to help the OP to answer the first question, yes the 20mm F1.7 lens is clearly sharp wide open. So instead of criticising people who are trying to help him answer his question why don't you do something positive or just button it.
Sorry for pointing out that your post is useless to him. I should have guessed that will not fly too well with your sensitive side.
 
If your 20mm is not sharp at F1.7 it's either a bad copy or you are doing something wrong. This is mine at F1.7, 1/10th second.
Your picture only illustrates that your particular copy is OK but doesn't help OP because you are shooting with EPL1 which will result in higher sharpness output with settings in camera that are unknown.
The OP asked if this lens is sharp wide open or if his photo was representative. I've shown it's not. How could I shoot with his lens and not my own? The sharpness setting on my EPL-1 is -1, there are no sharpness artifacts, how much evidence do you need that this lens is sharp wide open?
I personally do not need evidence 20/1.7 is a sharp lens wide open, I have one and it is sharp, but that doesn't make your sample anything OP can use to conclude anything about his copy, there is a number of reasons one could debate why exactly, starting with fact images from EPL1 are crispier than ones from EP2 (and thus I assume EP3 too) regardless of what lens is used, even when EPL1 has sharpness set to -1.
Well based on your logic then no-one can help the OP as only he owns that particular copy, so what exactly is your point and how do you propose that we overcome this particular hurdle? He has asked if the 20mm F1.7 is sharp and whether his picture is representative of how sharp it can be. Well the answer to the first question is clearly yes on most people's version of this lens. The answer to the second question can only be answered by EP-3 owners and will depend on the strength of the AA filter on this camera.

So to summarise, I have tried to help the OP to answer the first question, yes the 20mm F1.7 lens is clearly sharp wide open. So instead of criticising people who are trying to help him answer his question why don't you do something positive or just button it.
Sorry for pointing out that your post is useless to him. I should have guessed that will not fly too well with your sensitive side.
That's all well and good, but it doesn't square with what you posted earlier:
BTW, I currently own the 20mm and am only evaluating if I have a bad copy and/or if the 25mm PL would be better in this regard.
It is tough to judge from this distance and with reduced size but it does seem on soft side to me. If you could tell me which settings (picture mode & gradation) you used I will try to see if I can do "apples to apples".
ZoranC , by your definition, how would you be able to do an "apples to apples" comparison without the OP's lens and yours in hand? Even if you used a different E-P3 with the same settings, any results you obtained without testing the OP's lens would seem just as "useless" as Tony's post, again, using your definition. Heck, the OP's camera may have a faulty AA filter or something, so they better ship it to you with the 20, right?

Let's get back to the essence of this thread:
I'm finding that my 20mm wide open while is sharp, it isn't RAZOR sharp. Is this how this lens supposed to perform? [example photo]
If your 20mm is not sharp at F1.7 it's either a bad copy or you are doing something wrong. This is mine at F1.7, 1/10th second. [example photo]
Your comments to Tony did nothing to help the OP, and put your argumentative nature on display. In a perfect world, we would get the specific lenses and bodies together and do lab grade testing, but that's not going to happen, and it's not necessary. Tony answered the OP's question, and as I suggested earlier, the OP could do some home tests to see if there's an equipment problem.

No need for whatever you were going on about in this argument with Tony, but I agree that your earlier post requesting the OP's settings may be helpful.
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http://453c.smugmug.com/
 
I've made some other tests and have been able to get some with very good sharpness. However I don't get them consistently. Is it safe to assume that the 20mm on the EP3 is not as accurate focusing as the 12mm (dof notwithstanding)?
 
I've made some other tests and have been able to get some with very good sharpness. However I don't get them consistently. Is it safe to assume that the 20mm on the EP3 is not as accurate focusing as the 12mm (dof notwithstanding)?
I believe the 12 will focus faster than the 20, but I'm not sure if it's more accurate. I think that's going to at least partially be a function of the subject matter. Also, the 12 is a newer design, so that may be a factor as well.

Have you tried shooting without IBIS? With a tripod and remote or timer shutter release at stationary objects? If you really want to run some tests, you'll need to remove as many variables as possible. Shooting handheld at different, moving subjects won't tell you nearly as much about what you're after. Have a look at that TOP "How to stress a lens" article I linked above for some more ideas.
--
http://453c.smugmug.com/
 
If your 20mm is not sharp at F1.7 it's either a bad copy or you are doing something wrong. This is mine at F1.7, 1/10th second.
Your picture only illustrates that your particular copy is OK but doesn't help OP because you are shooting with EPL1 which will result in higher sharpness output with settings in camera that are unknown.
The OP asked if this lens is sharp wide open or if his photo was representative. I've shown it's not. How could I shoot with his lens and not my own? The sharpness setting on my EPL-1 is -1, there are no sharpness artifacts, how much evidence do you need that this lens is sharp wide open?
I personally do not need evidence 20/1.7 is a sharp lens wide open, I have one and it is sharp, but that doesn't make your sample anything OP can use to conclude anything about his copy, there is a number of reasons one could debate why exactly, starting with fact images from EPL1 are crispier than ones from EP2 (and thus I assume EP3 too) regardless of what lens is used, even when EPL1 has sharpness set to -1.
Well based on your logic then no-one can help the OP as only he owns that particular copy, so what exactly is your point and how do you propose that we overcome this particular hurdle? He has asked if the 20mm F1.7 is sharp and whether his picture is representative of how sharp it can be. Well the answer to the first question is clearly yes on most people's version of this lens. The answer to the second question can only be answered by EP-3 owners and will depend on the strength of the AA filter on this camera.

So to summarise, I have tried to help the OP to answer the first question, yes the 20mm F1.7 lens is clearly sharp wide open. So instead of criticising people who are trying to help him answer his question why don't you do something positive or just button it.
Sorry for pointing out that your post is useless to him. I should have guessed that will not fly too well with your sensitive side.
I am at a loss to understand the point of your posts or the need for you to "regulate" other people when they are trying to help the OP. When someone asks "is this lens sharp wide open?" and I take the trouble to post an image to demonstrate that my copy most definitely is, I'm failing to see what you don't get about that? If the OP's camera has a heavier AA filter than the EPL-1 then no lens will appear as sharp as it will on the EPL-1. That's a obviously given. My point still stands, the 20mm F1.7, assuming you have a reasonable copy, is clearly sharp wide open. If the OP's copy is not, then he is in possession of a less than optimal copy, he is not familiar with the output of his camera or he has not focused correctly.

My sensitivity is to idiots like yourself trying to pick an argument for no apparent reason other than you can.
--
It's a known fact that where there's tea there's hope.
Tony
http://the-random-photographer.blogspot.com/
 
HCB never needed such sharp lenses or emulsion to make interesting images.

Fixation with sharpness is the trademark of nitwits and madmen. Should I go on?
Please post interesting images. Then we might resume the talk :)
Do you have anything that would help OP with his question? Or you are today just in mood to be an ...?

BTW, based on your flickr photostream you are no HCB and photo OP posted is more interesting than yours so, by token of your own logic an attitude, please take some interesting images before you resume to talk, much less lecture others.
Thank you for increasing my hit count which is already amazing considering my modest abilities, some 60,000 hits.

BTW among the most popular are some slight OOF images. 'Slight OOF' is also the title of a book of one of the most famous photographers.

Clearly there is a need of evening classes in Photography as Art in this forum, instead of collecting the usual pets, brats and plastic gear.

Am.

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Photostream: http://www.flickr.com/photos/amalric
 
ZoranC , by your definition, how would you be able to do an "apples to apples" comparison without the OP's lens and yours in hand? Even if you used a different E-P3 with the same settings, any results you obtained without testing the OP's lens would seem just as "useless" as Tony's post, again, using your definition.
...

Heck, the OP's camera may have a faulty AA filter or something, so they better ship it to you with the 20, right?
Very simple, by showing shot of similar layout (subject and distance) taken with same settings by camera that is practically identical. Apples to apples does not have to be of AR kind but that doesn't mean one should not make them as close as possible and is free to introduce variable that generates big skew (EPL1).

I have already searched all of photos I have taken with my EP2 and 20/1.7 and unfortunately I don't have any similar photos to offer to OP but if I did that would be much closer to "apples to apples" than is "boots upclose with very sharp sensor" than is "child with fine hair at distance with less sharp sensor".
 
papillon_65 wrote:
... why don't you ... just button it.
Sorry for pointing out that your post is useless to him. I should have guessed that will not fly too well with your sensitive side.
I am at a loss to understand the point of your posts or the need for you to "regulate" other people when they are trying to help the OP.
Saying your "contribution" is worthless is not regulating you, it is a comment on the "value" of it. But when somebody tells others to button it, that is a perfect example of morron attempting to control people (in this case you trying to control me).
My sensitivity is to idiots ...
So you are very sensitive to yourself?
 
Thank you for increasing my hit count which is already amazing considering my modest abilities, some 60,000 hits.
Considering I have seen blogs of absolute trolls have 500,000 hits I wouldn't call 60,000 amazing.
Clearly there is a need of evening classes in Photography as Art in this forum, instead of collecting the usual pets, brats and plastic gear.
Clearly. Looking forward to the results once you enroll. Keep us posted, please.
 
ZoranC , by your definition, how would you be able to do an "apples to apples" comparison without the OP's lens and yours in hand? Even if you used a different E-P3 with the same settings, any results you obtained without testing the OP's lens would seem just as "useless" as Tony's post, again, using your definition.
...

Heck, the OP's camera may have a faulty AA filter or something, so they better ship it to you with the 20, right?
Very simple, by showing shot of similar layout (subject and distance) taken with same settings by camera that is practically identical. Apples to apples does not have to be of AR kind but that doesn't mean one should not make them as close as possible and is free to introduce variable that generates big skew (EPL1).
I've looked at comparison test shots between the PENs and haven't seen the kind of difference ("big skew" - hardly) you imply. Tony's shot was simply illustrating that the 20mm lens is capable of delivering a sharp image. While differences in bodies does have some impact, photos from any m43 body with a properly working and properly used 20mm lens would be enough to illustrate that the 20mm delivers sharp photos. It's up to the OP to take it from there and do their own tests if they feel the need.
I have already searched all of photos I have taken with my EP2 and 20/1.7 and unfortunately I don't have any similar photos to offer to OP but if I did that would be much closer to "apples to apples" than is "boots upclose with very sharp sensor" than is "child with fine hair at distance with less sharp sensor".
Unless you had taken test shots the OP could easily replicate, I'd be amazed if you or anyone else had photos similar enough to any of the OP's to make any direct comparison significant enough that sensor differences would be the determining factor. Unless comparing true test shots, there's simply too many variables, even if using the exact same camera and lens. Again, Tony's photo was as good an indicator of possible sharpness as any in this instance. Failing to acknowledge this simple fact reveals just how stubborn you can be. The OP has several suggestions to follow up on, and I think that's sufficient to answer their questions.

If you care to argue the point further, you'll be doing it without me. I've seen you argue to the point of absurdity many times, and I don't care to fuel whatever it is that drives you to such frothy lengths.
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http://453c.smugmug.com/
 
Here's a sharp shot I was able to get of a subject similar to papillon_65. I think it's close in sharpness. Good enough for me (after sharpening).

Maybe the lens is slightly softer at a distance?



 
Here's a sharp shot I was able to get of a subject similar to papillon_65. I think it's close in sharpness. Good enough for me (after sharpening).

Maybe the lens is slightly softer at a distance?



I would be happy with that level of sharpness at the center of the image, but I'm not nearly as picky as some.

If you care to bother with it, setting up a well lit tripod shot of newsprint will give you an idea of sharpness across the image. Make sure the camera is squared up with the paper and shoot away. Try shots from minimum focus distance and back away a meter or so at a time and see how that affects sharpness. Or not. I think you're going to be happy with your lens without any testing.
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http://453c.smugmug.com/
 
Why don’t you just look at the lens reviews to see how sharp it is? The 20mm isn’t quite as sharp as some people say it is wide open. It is good for a small lens with a large aperture that isn’t terribly expensive. However, it gets much sharper at F2.0 and F2.2.
20mm vs 17mm Wide open

http://www.dpreview.com/lensreviews/widget/Fullscreen.ashx?reviews=62,59&fullscreen=true&av=1.667,3&fl=20,17&vis=VisualiserSharpnessMTF,VisualiserSharpnessMTF&stack=horizontal&&config=LensReviewConfiguration.xml%3F1

The Sony 16mm didn’t test as bad as some people say it is. It is not sharp in the sides and corners. However, it appears to be outstanding in the center if these test results are accurate.

http://www.dpreview.com/reviews/SonyNex5Nex3/page8.asp

How sharp do you really need a wide aperture lens to be around the edges? Most of the time the edges are blurred from being in the out of focus area anyway. Give me a good sharp lens on center and I am happy. The 14-140mm is the sharpest m4/3s lens I have encountered in that respect.

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GH2, GF1, & ZS3 Sample movies
http://www.youtube.com/user/mpgxsvcd#play/uploads
http://vimeo.com/user442745
GF1 Pictures
http://www.dpreview.com/galleries/4222674355/albums
 
papillon_65 wrote:
... why don't you ... just button it.
Sorry for pointing out that your post is useless to him. I should have guessed that will not fly too well with your sensitive side.
I am at a loss to understand the point of your posts or the need for you to "regulate" other people when they are trying to help the OP.
Saying your "contribution" is worthless is not regulating you, it is a comment on the "value" of it. But when somebody tells others to button it, that is a perfect example of morron attempting to control people (in this case you trying to control me).
The only worthless contribution to this thread has been yours. I'm not attempting to control you, just giving you some sound advice.
My sensitivity is to idiots ...
So you are very sensitive to yourself?
I'd say that anyone who believes that you have to exactly replicate a shot to demonstrate a lens' sharpness has ticked the idiot box quite nicely.
--
It's a known fact that where there's tea there's hope.
Tony
http://the-random-photographer.blogspot.com/
 
How sharp do you really need a wide aperture lens to be around the edges? Most of the time the edges are blurred from being in the out of focus area anyway. Give me a good sharp lens on center and I am happy. The 14-140mm is the sharpest m4/3s lens I have encountered in that respect.
Going OT, I know video is important to you.
  • Is the 14-140 typically the lens you use for video?
  • From what you've seen, what do you think of the X lenses?
--
http://453c.smugmug.com/
 

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