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Archive 2015Zeiss Unveils the Loxia 21mm f/2.8
p.23 #1Zeiss Unveils the Loxia 21mm f/2.8
pdmphoto wrote:
Like I said, I don't buy the theory of decentering issue being caused by shipping companies...I've tested my lenses at 36MP with the A7R.
I don't buy it either. In that we're in agreement. The rest, well, I don't think that's worth either your time or mine to argue.
Still, until we know that the lens in question isn't a one off, I don't have plans to pounce on Zeiss. Even with great production quality, decentering in some copies (whether many or few) is still a statistical necessity.
Like I said, I don't buy the theory of decentering issue being caused by shipping companies...I've tested my lenses at 36MP with the A7R.
I don't buy it either. In that we're in agreement. The rest, well, I don't think that's worth either your time or mine to argue.
Still, until we know that the lens in question isn't a one off, I don't have plans to pounce on Zeiss. Even with great production quality, decentering in some copies (whether many or few) is still a statistical necessity.
Dec 22, 2015 at 02:54 PM
p.23 #2Zeiss Unveils the Loxia 21mm f/2.8
What do you think about it?
Can you repeat the test with another camera body, just to be sure it's not the mount?
Although your Canon FD 20 seems to be better balanced between L/R, (top v/s bottom is bad btw) it would be interesting to see if a second body shows same results...
Can you repeat the test with another camera body, just to be sure it's not the mount?
Although your Canon FD 20 seems to be better balanced between L/R, (top v/s bottom is bad btw) it would be interesting to see if a second body shows same results...
Dec 22, 2015 at 03:34 PM
p.23 #3Zeiss Unveils the Loxia 21mm f/2.8
PEKA62 wrote:
Can you repeat the test with another camera body, just to be sure it's not the mount?
Although your Canon FD 20 seems to be better balanced between L/R, (top v/s bottom is bad btw) it would be interesting to see if a second body shows same results...
Maybe I can borrow the A7 from a friend after christmas. I only have an A6000 as second body at the moment.
Dec 22, 2015 at 03:47 PM
p.23 #4Zeiss Unveils the Loxia 21mm f/2.8
A couple more samples:
X-mas in Amsterdam (@f4)
Loxia21mm1 by Hans van den Bosch, on Flickr
As can be seen on this grab, rain actually brings people closed together :-) - this kind of picture is very hard to do with the classic (which has slightly better ergonomics when used on tripod, but is clearly too large to wave around with)......
Loxia21mm2 by Hans van den Bosch, on Flickr
Car shot at f2.8 (sorry, couldn't find a Saab)
Loxia21mm3 by Hans van den Bosch, on Flickr
X-mas in Amsterdam (@f4)
Loxia21mm1 by Hans van den Bosch, on FlickrAs can be seen on this grab, rain actually brings people closed together :-) - this kind of picture is very hard to do with the classic (which has slightly better ergonomics when used on tripod, but is clearly too large to wave around with)......
Loxia21mm2 by Hans van den Bosch, on FlickrCar shot at f2.8 (sorry, couldn't find a Saab)
Loxia21mm3 by Hans van den Bosch, on FlickrDec 23, 2015 at 04:43 AM
p.23 #5Zeiss Unveils the Loxia 21mm f/2.8
I have tried to find some targets to show Loxia 21's distortion pattern close up. Which is not easy, I could not find a lot of them. Also alining the camera is hard. But here's what I managed - distance about 80cm/2.5 feet (mine)
Loxia21mmClose 2 by Hans van den Bosch, on Flickr
Loxia21mmClose 1 by Hans van den Bosch, on Flickr
Loxia21mmClose 2 by Hans van den Bosch, on FlickrLoxia21mmClose 1 by Hans van den Bosch, on FlickrDec 23, 2015 at 08:56 AM
p.23 #7Zeiss Unveils the Loxia 21mm f/2.8
Just for the record - Tom from PTlens added a profile for the Loxia. So I (being an Aperture user) can now correct the distortion.
Dec 24, 2015 at 03:38 AM
p.23 #8Zeiss Unveils the Loxia 21mm f/2.8
There is no profile yet on Capture One v9.
Dec 24, 2015 at 04:09 AM
p.23 #9Zeiss Unveils the Loxia 21mm f/2.8
So Philipe, you choose not to use the in-camera corrections?
Dec 24, 2015 at 11:12 AM
p.23 #11Zeiss Unveils the Loxia 21mm f/2.8
Well I suppose that if the in-camera profiles were perfect, there would be no need for profiles in post processing software?
Dec 24, 2015 at 02:21 PM
p.23 #12Zeiss Unveils the Loxia 21mm f/2.8
I tend to disable all in-camera corrections, Hans. If you tell me how to enable the profile, I can test both types of results.
Edited on Dec 25, 2015 at 12:51 PM · View previous versions
Edited on Dec 25, 2015 at 12:51 PM · View previous versions
Dec 24, 2015 at 02:42 PM
p.23 #13Zeiss Unveils the Loxia 21mm f/2.8
I do so too :-) But I was curious.
Lens compensation is the first option in tab 7 of the cogwheel menu. It gives three correction options. For distortion, for vignette and for chromatic aberration. How the camera can correct both LoCA and LaCA at the same time I do not know, which is why I am somewhat suspicious.
Lens compensation is the first option in tab 7 of the cogwheel menu. It gives three correction options. For distortion, for vignette and for chromatic aberration. How the camera can correct both LoCA and LaCA at the same time I do not know, which is why I am somewhat suspicious.
Dec 24, 2015 at 04:02 PM
p.23 #14Zeiss Unveils the Loxia 21mm f/2.8
not a scientific test. still interesting for me. Tripod. A remote shutter release, no stabilizer. JEPG is not sharpened.
Candidates
Loxia 21
Zeiss ZF2
FE16-35
FE28 &21 Converter
René
Objekt
Loxia center 2.8
Loxia right 2.8
Loxia left 2.8
Candidates
Loxia 21
Zeiss ZF2
FE16-35
FE28 &21 Converter
René
Objekt
Loxia center 2.8
Loxia right 2.8
Loxia left 2.8
Dec 25, 2015 at 07:35 AM
p.23 #15Zeiss Unveils the Loxia 21mm f/2.8
Zeiss ZF2
Zeiss ZF2 center 2.8
Zeiss ZF2 right 2.8
Zeiss ZF2 left 2.8
Zeiss ZF2 center 2.8
Zeiss ZF2 right 2.8
Zeiss ZF2 left 2.8
Dec 25, 2015 at 07:40 AM
p.23 #16Zeiss Unveils the Loxia 21mm f/2.8
FE21 & Converter
FE28 & 21 Converter 2.8 center
FE28 & 21 Converter 2.8 right
FE28 & 21 Converter 2.8 left
FE28 & 21 Converter 2.8 center
FE28 & 21 Converter 2.8 right
FE28 & 21 Converter 2.8 left
Dec 25, 2015 at 07:47 AM
p.23 #17Zeiss Unveils the Loxia 21mm f/2.8
Loxia 21mm 4.0
Loxia 21 4.0 center
Loxia 21 4.0 right
Loxia 21 4.0 left
Loxia 21 4.0 center
Loxia 21 4.0 right
Loxia 21 4.0 left
Dec 25, 2015 at 07:52 AM
p.23 #18Zeiss Unveils the Loxia 21mm f/2.8
FE16-35 (21mm)
FE16-35 4.0 center
FE16-35 4.0 right
FE16-35 4.0 left
Edited on Dec 25, 2015 at 08:14 AM · View previous versions
FE16-35 4.0 center
FE16-35 4.0 right
FE16-35 4.0 left
Edited on Dec 25, 2015 at 08:14 AM · View previous versions
Dec 25, 2015 at 07:54 AM
p.23 #19Zeiss Unveils the Loxia 21mm f/2.8
Zeiss ZF2 21
Zeiss ZF2 21 4.0 center
Zeiss ZF2 21 right 4.0
Zeiss ZF2 21 4.0 right
Zeiss ZF2 21 4.0 center
Zeiss ZF2 21 right 4.0
Zeiss ZF2 21 4.0 right
Dec 25, 2015 at 07:57 AM
p.23 #20Zeiss Unveils the Loxia 21mm f/2.8
FE28 & 21 converter 4.0
FE28 & 21 converter 4.0 center
FE28 & 21 converter 4.0 right
FE28 & 21 converter 4.0 left
FE28 & 21 converter 4.0 center
FE28 & 21 converter 4.0 right
FE28 & 21 converter 4.0 left
Dec 25, 2015 at 08:00 AM