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Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - Printable Version

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+--- Thread: Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) (/showthread.php?tid=2641)



Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - Sibbi - 02-08-2012

Hi Zoners,



it's time for a new mft lens test...

[url="http://www.opticallimits.com/olympus--four-thirds-lens-tests/714-samyang7535"]http://www.opticallimits.com/olympus--four-thirds-lens-tests/714-samyang7535[/url]



I love this lens! <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='Smile' />



Bye,



Sebastian


Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - ginsbu - 02-08-2012

Thanks for the review.



I'm surprised—but pleased!—to read that this lens uses a near-stereographic projection. After lenstip did their review, I contacted them about this issue and they reported that they believed it uses an equi-solid angle projection. I must say that the samples I've seen from the m4/3 Samyang don't look quite as "stereoscopic" as those from their APS-C fisheye. Are you sure about the near-stereoscopic projection, or is it possible that it's just not as "near" as the APS-C lens? Unfortunately I've never seen a direct comparison between the Samyang and Panasonic fisheyes, or the Samyang m4/3 and APS-C fisheyes, to compare their projections.


Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - anyscreenamewilldo - 02-09-2012

yes the lens looks lovely - the pictures are very nice



..... must go into the shop and try one of these little things for those lighter and more discreet moments, ta sibbi


Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - Guest - 02-09-2012

How was the focus scale accuracy? A lot of the APS-C Samyang 8mm fish-eye lenses were quite a bit off, and needed a simple adjustment to adjust the focus ring distance scale to the actual distance. At f3.5 this did make a visible difference with my lens.


Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - joachim - 02-09-2012

[quote name='photonius' timestamp='1328787513' post='15739']

How was the focus scale accuracy? A lot of the APS-C Samyang 8mm fish-eye lenses were quite a bit off, and needed a simple adjustment to adjust the focus ring distance scale to the actual distance. At f3.5 this did make a visible difference with my lens.

[/quote]



Are you sure this is the lens and not the body? I am actually wondering whether µFT bodies have no precise register. I have an Oly 12/2, the only m.Zuiko with a distance scale. Mine is reasonable accurate on my body, but reading the manual, I got the impression that is not to be relied on. There are reports about lenses being out of spec on the web. Also, the lens can be turned a fair amount past infinity, which makes sure infinity focus can be achieved.


Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - joachim - 02-09-2012

[quote name='Sebastian' timestamp='1328737982' post='15719']

Hi Zoners,



it's time for a new mft lens test...

[url="http://www.opticallimits.com/olympus--four-thirds-lens-tests/714-samyang7535"]http://www.photozone...714-samyang7535[/url]



I love this lens! <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='Smile' />



Bye,



Sebastian

[/quote]



Hi Sebastian,



When working at PZ, do you get a trip to NY with every µFT lens you test? <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='Wink' /> Many of the samples here and of the m.Zuiko 45/1.8 were taken there.



Thanks for the report. I read it with a lot of interest.



Joachim


Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - popo - 02-09-2012

My APS-C Samyang 8mm fisheye distance scale was way out of whack too. Focusing at infinity, the scale was showing 0.7m. Not even close. I couldn't reach the specified MFD either. Only later I found out you can undo some screws and re-align the focus ring, which I did. Infinity was now at infinity, and I could finally reach MFD.



Bear in mind the very short focal length of the lens, I suspect it is far more sensitive to extension effects than most other lenses. If the mount is even a fraction of a mm off, that could cause a very significant focus shift.


Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - Sibbi - 02-09-2012

[quote name='ginsbu' timestamp='1328743188' post='15724']

Thanks for the review.



I'm surprised—but pleased!—to read that this lens uses a near-stereographic projection. After lenstip did their review, I contacted them about this issue and they reported that they believed it uses an equi-solid angle projection. I must say that the samples I've seen from the m4/3 Samyang don't look quite as "stereoscopic" as those from their APS-C fisheye. Are you sure about the near-stereoscopic projection, or is it possible that it's just not as "near" as the APS-C lens? Unfortunately I've never seen a direct comparison between the Samyang and Panasonic fisheyes, or the Samyang m4/3 and APS-C fisheyes, to compare their projections.

[/quote]



Hi, well it's just "near" stereographic... will try to make it more clear in the review.


Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - Sibbi - 02-09-2012

[quote name='joachim' timestamp='1328792554' post='15745']

Hi Sebastian,



When working at PZ, do you get a trip to NY with every µFT lens you test? <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='Wink' /> Many of the samples here and of the m.Zuiko 45/1.8 were taken there.



Thanks for the report. I read it with a lot of interest.



Joachim

[/quote]



Unfortunately not, but it sounds like a good idea - Klaus? <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/cool.gif' class='bbc_emoticon' alt='B)' />


Next PZ lens test report: Samyang 7.5mm f/3.5 Fisheye (MFT) - Sibbi - 02-09-2012

[quote name='photonius' timestamp='1328787513' post='15739']

How was the focus scale accuracy? A lot of the APS-C Samyang 8mm fish-eye lenses were quite a bit off, and needed a simple adjustment to adjust the focus ring distance scale to the actual distance. At f3.5 this did make a visible difference with my lens.

[/quote]



Hi, the focus scale accuracy of our sample was perfectly fine <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/mellow.gif' class='bbc_emoticon' alt=':mellow:' />