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07-22-2009, 02:03 PM   #1
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mini test with 50mm f1.2

Originally posted on dpreview.
---------------------------------------------------


Decided to check my second 50mm f1.2 so took it for walk.
All these photos are from same outing around my house.



I am sharing this test because many wish to see how it performs wide open before throw this kind of money on it.

performance of f1.2 lense at f1.2 is very important. So the reason for my testing was to see how it performs wide open. Another reason for me was to see how this lense performs wide open compared to canon's 50mm f1.2 L.
I have been hunting full size pictures taken by 50mm f1.2 L so now i have some impression of comparison between then. I will not post any 50mm f1.2 L shot simply because i do not own this lense and do not want to upload others Pictures.

So befor i through you pictures, here are few things to remember.

1. i am no expert, i am sure someone might produce better pictures than this. But seeing these pictures you can assure that this is how it will perform in hands of layman.

2. I only have k100d so all pictures are with k100d.

3. I used setting of *0 sharpning, 0 contrast and 0 saturation*.

4. All files straight of camera. I wanted to share full sizes but my flickr does not allow it seems. So if someone has some idea for sharing full sizes i would upload them. Or if someone else could share, i will email him. Please contact me if wish to do.

5. *All photos are f1.2*.

6. All shot in jpeg. And these are jpegs straight out of camera.


So here we go.

The most difficult thing i think is for super fast lense is how it performs wide open focused at infinity. So first one is focused to infinity.



Center



look soft but we are at f1.2, the main thing is if i applied sharpening, it will be very usable for printing. Here is little bit sharpened version.



And here is corner of this file.




Once this focus at infinity sorted out.

We want to see if it is sharp when focused close.

So here is main capture.



and here is center.



I am not putting corners since they are out of focus.


Third thing we are interested in is bokeh.

So next photos would give some idea.



center



next photo



center



next photo



center




My subjective impressions.

This is damn good lense for f1.2 lense. Nothing special in this statement, many have already said it.

it is pretty sharp wide open.

it is difficult to focus with viewfinder alone. (with liveview from sensor it is easy).

in the end , I hope it is useful.

PS: i have two of them now, but both perform similar.

ps2; to get some idea how it performed compared to another impressive f1.2, here are some samples from canons version



photozone .de/canon-eos/158-canon-ef-50mm-f12-usm-l-test-report--review?start=2

make your opinions about it.

07-22-2009, 02:06 PM   #2
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i currently cant view exifs..

but how fast are the flower shots?
and
are you using a tripod?

also all of your shots are rather under exposed.
07-22-2009, 02:13 PM   #3
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Original Poster
QuoteOriginally posted by Gooshin Quote
i currently cant view exifs..

but how fast are the flower shots?
and
are you using a tripod?

also all of your shots are rather under exposed.

everything handheld.

i will try to post exif, but i think if you go to flickr and right click it should show you exif and detail.

i use fully manual and habitually underexpose a little. just old habit i guess.
07-22-2009, 02:16 PM   #4
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MF on pentax digital with this lens seems very hard to say the least .

pentax need to re make this lens with AF .. its about time

07-22-2009, 02:21 PM   #5
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QuoteOriginally posted by redpigeons Quote
MF on pentax digital with this lens seems very hard to say the least .

pentax need to re make this lens with AF .. its about time
yes this is very true. But then this is fun part of game.

manual focus with this lense does work and here is a proof

at f1.2

07-22-2009, 02:29 PM   #6
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QuoteOriginally posted by redpigeons Quote
MF on pentax digital with this lens seems very hard to say the least .

pentax need to re make this lens with AF .. its about time
Since they are going after the equivalent FOVs 30/1.2 idealy DA* would really be nice
07-22-2009, 02:43 PM   #7
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QuoteOriginally posted by axl Quote
Since they are going after the equivalent FOVs 30/1.2 idealy DA* would really be nice
yeah and with SDM and weather-sealed. how much do you think that lens would cost?
07-22-2009, 02:57 PM   #8
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QuoteOriginally posted by Pentaxor Quote
yeah and with SDM and weather-sealed. how much do you think that lens would cost?
the leica/voigtlander 35mm f1.2 is roughly 1000-1200$ depending

add autofocus/sdm/weathersealing, and take away the leica name, id say $2000 is a reasonable top limit.

which really sint that bad.

07-22-2009, 04:05 PM   #9
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QuoteOriginally posted by Gooshin Quote
the leica/voigtlander 35mm f1.2 is roughly 1000-1200$ depending

add autofocus/sdm/weathersealing, and take away the leica name, id say $2000 is a reasonable top limit.

which really sint that bad.
We think differently. I would have said add autofocus/sdm/weathersealing, and take away the leica name, and $1,000-1,200 is reasonable.
07-22-2009, 06:22 PM   #10
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QuoteOriginally posted by Gooshin Quote
the leica/voigtlander 35mm f1.2 is roughly 1000-1200$ depending

add autofocus/sdm/weathersealing, and take away the leica name, id say $2000 is a reasonable top limit.

which really sint that bad.
I could had bought 2 DA* prime telephoto lenses with that amount. the 200 and 300 respectively. that's too much IMO, considering it's not a Leica. I agree that the price should be a lil bit around 1,000 to 1,200 considering it's 1.2 speed and 35mm range. I would certainly consider this more expensive than the 2 DA* zooms.
07-22-2009, 08:47 PM   #11
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zxaar, thank you for the comparative images.
One observation is the images look flat straight out from the camera and will definitely benefit from a contrast increase during post processing.

Another test you may wish to do is to discover the degree of coma which is a particularly challenging aberration to control with fast wide aperture lenses. A simple test is to shoot something like colored circular lights or Christmas lights at night. A lens with poor coma control will show the lights not as circular but as an oval shape especially at the periphery of the frame.
07-22-2009, 10:48 PM   #12
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QuoteOriginally posted by Pentaxor Quote
yeah and with SDM and weather-sealed. how much do you think that lens would cost?
looking at the current price of DA*55....

QuoteOriginally posted by Miserere Quote
We think differently. I would have said add autofocus/sdm/weathersealing, and take away the leica name, and $1,000-1,200 is reasonable.
... I'd expect something like this, maybe a litle bit upwards

BR
Peter
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