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Author Topic: Samyang Teases New Lenses  (Read 14878 times)

mrsfotografie

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Re: Samyang Teases New Lenses
« Reply #30 on: August 27, 2014, 10:14:02 AM »
There is no such thing as a "macro" if its below 1:1 ;)   Shame on Zeiss.

1:1 ratio is a subjective value. You get more magnification with 1:1 macro on crop, than with 1:1 macro on FF.
Something like A7R (36mp sensor) allows you to crop a lot and get the same magnification of a 16mp crop sensor. So, technically, 1:2 macro on 20mp crop provides similar magnification to 1:1 macro on 12mp FF.

1:1 has nothing to do with megapixels; it is entirely governed by optics and means the physical size of the projected image equals that of the subject, ie a 1cm tall object results in a 1cm tall projected image.

Due to the cropping factor of an aps-c sensor though, you are effectively blowing up the projected image. So this means that for a crop factor of 1.5, a 50 mm lens will become 75 mm equivalent, and at 1:2 magnification becomes 3/4 magnification.
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Re: Samyang Teases New Lenses
« Reply #30 on: August 27, 2014, 10:14:02 AM »

ecka

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Re: Samyang Teases New Lenses
« Reply #31 on: August 27, 2014, 12:02:45 PM »
There is no such thing as a "macro" if its below 1:1 ;)   Shame on Zeiss.

1:1 ratio is a subjective value. You get more magnification with 1:1 macro on crop, than with 1:1 macro on FF.
Something like A7R (36mp sensor) allows you to crop a lot and get the same magnification of a 16mp crop sensor. So, technically, 1:2 macro on 20mp crop provides similar magnification to 1:1 macro on 12mp FF.

1:1 has nothing to do with megapixels; it is entirely governed by optics and means the physical size of the projected image equals that of the subject, ie a 1cm tall object results in a 1cm tall projected image.

Due to the cropping factor of an aps-c sensor though, you are effectively blowing up the projected image. So this means that for a crop factor of 1.5, a 50 mm lens will become 75 mm equivalent, and at 1:2 magnification becomes 3/4 magnification.

Well, lens magnification has nothing to do with megapixels, but the amount of information you get from it depends on the number of pixels you put on each millimeter of the projection. I may be using wrong terminology here, I'm sorry for my bad english. IMHO, on different sensor sizes (FF, APSC, m4/3) 1:1 ratio has different values, as well as with different resolutions of the same sensor size, because, when it comes to the final (real macro) image, everything matters. At those magnifications I mostly care about the information I can capture with the final image in mind (on big display or print), not how big it looks on my camera LCD or in a smartphone snapshot gallery.
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Re: Samyang Teases New Lenses
« Reply #32 on: September 01, 2014, 08:12:44 AM »

mrsfotografie

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Re: Samyang Teases New Lenses
« Reply #33 on: September 01, 2014, 12:01:21 PM »
http://vimeo.com/104693016

That's a nice teaser; aiming at the videographer obviously. I don't yet see a major advantage vs let's say the Sigma 1.4 EX.
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Vgramatikov

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Re: Samyang Teases New Lenses
« Reply #34 on: September 01, 2014, 12:40:15 PM »
Samy need AF or they will go only for video.

But that is not the case...we`ll see...

For work i prefer af 1.8 not 1.4 mf.....  on the field you need fast and accurate af and that why we pay all that money for complex af systems.

If not...deam i will stay with 5d original and 3-4 samy`s

mrsfotografie

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Re: Samyang Teases New Lenses
« Reply #35 on: September 01, 2014, 01:00:44 PM »
Samy need AF or they will go only for video.

But that is not the case...we`ll see...

For work i prefer af 1.8 not 1.4 mf.....  on the field you need fast and accurate af and that why we pay all that money for complex af systems.

If not...deam i will stay with 5d original and 3-4 samy`s

The MkII also pairs very nicely with MF, or even AF primes, one reason it stays in my kit :)
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vscd

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Re: Samyang Teases New Lenses
« Reply #36 on: September 02, 2014, 01:32:56 PM »
I heard the Canon 5D Mark 3 has no interchangeable screens anymore? Would be a shame for manual users like me ;(   Can anyone confirm this?
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Re: Samyang Teases New Lenses
« Reply #36 on: September 02, 2014, 01:32:56 PM »

mrsfotografie

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Re: Samyang Teases New Lenses
« Reply #37 on: September 02, 2014, 01:58:21 PM »
I heard the Canon 5D Mark 3 has no interchangeable screens anymore? Would be a shame for manual users like me ;(   Can anyone confirm this?

Confirmed.
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Re: Samyang Teases New Lenses
« Reply #37 on: September 02, 2014, 01:58:21 PM »