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Archive 2013Our prayers have been answered: Nex-FF in 2 months
p.26 #1Our prayers have been answered: Nex-FF in 2 months
mcbroomf wrote:
You should read the note that goes with it
Equivalent 35mm-format
focal length*1 (mm) 52.5
* The values shown above for equivalent 35mm-format
focal length and angle of view are for Interchangeable Lens
Cameras equipped with an APS-C sized image sensor.
Exactly!
You should read the note that goes with it
Equivalent 35mm-format
focal length*1 (mm) 52.5
* The values shown above for equivalent 35mm-format
focal length and angle of view are for Interchangeable Lens
Cameras equipped with an APS-C sized image sensor.
Exactly!
Aug 31, 2013 at 11:20 AM
p.26 #2Our prayers have been answered: Nex-FF in 2 months
120 g is probably not a typo, it also says 4.3 oz in one of the tables.
The Canon 40 mm 2.8 STM pancake is 130g, hm, who knows...
The Canon 40 mm 2.8 STM pancake is 130g, hm, who knows...
Aug 31, 2013 at 11:23 AM
p.26 #3Our prayers have been answered: Nex-FF in 2 months
Then, if it is a Zeiss, it is unlike any other one under current production, it seems.
Aug 31, 2013 at 11:32 AM
p.26 #4Our prayers have been answered: Nex-FF in 2 months
philber wrote:
The German specification sheet looks strange in one respect. Weight looks like 120g, or hardly more than half the crop 24 f:1.8. That a Zeiss FF prime that is so light sounds unlikely, don't you think? My guess? APS-c pancake. Or a typo...
it also lists the lens as half the length of the crop ZA 24/1.8 and has one less element. the slower speed and less demanding sensor of FF means that they can make a smaller lens than the ZA 24/1.8 that appears to be somewhat similar in size and complexity to the zm 35/2.8. seems entirely reasonable to me, zeiss has made many much smaller f/2.8 ~35mm lenses (see contax T cameras). if this rumor is true it means that the FF NEX with 35/2.8 could end up being smaller than the NEX-7 + 24/1.8 combo while providing the same angle of view and dof!
The German specification sheet looks strange in one respect. Weight looks like 120g, or hardly more than half the crop 24 f:1.8. That a Zeiss FF prime that is so light sounds unlikely, don't you think? My guess? APS-c pancake. Or a typo...
it also lists the lens as half the length of the crop ZA 24/1.8 and has one less element. the slower speed and less demanding sensor of FF means that they can make a smaller lens than the ZA 24/1.8 that appears to be somewhat similar in size and complexity to the zm 35/2.8. seems entirely reasonable to me, zeiss has made many much smaller f/2.8 ~35mm lenses (see contax T cameras). if this rumor is true it means that the FF NEX with 35/2.8 could end up being smaller than the NEX-7 + 24/1.8 combo while providing the same angle of view and dof!
Aug 31, 2013 at 11:47 AM
p.26 #5Our prayers have been answered: Nex-FF in 2 months
That would be swell! 
Aug 31, 2013 at 12:07 PM
p.26 #6Our prayers have been answered: Nex-FF in 2 months
That's right. Sweet. Yeah, it's about the same as the ZM35/2.8 isn't it. I don't think we should expect image quality as good as the RX1's lens, but I wonder how close it might get.
Wonder how close the optical design is to the 7/5 of the Sigma 30/2.8. That lens is telecentric and about the same size, but of course only covers APS-C.
Min focus is 1.15 meters, very far for a CSC lens these days. Geez, that makes me think it really is just a ZM35/2.8 with AF! :-)
Wonder how close the optical design is to the 7/5 of the Sigma 30/2.8. That lens is telecentric and about the same size, but of course only covers APS-C.
Min focus is 1.15 meters, very far for a CSC lens these days. Geez, that makes me think it really is just a ZM35/2.8 with AF! :-)
Aug 31, 2013 at 12:42 PM
p.26 #7Our prayers have been answered: Nex-FF in 2 months
1.15m for a 35mm? That's awful. That seriously would remove about 20% of the shots if want to take with a 35mm lens.
Aug 31, 2013 at 12:48 PM
p.26 #9Our prayers have been answered: Nex-FF in 2 months
Yes, 1.15 feet not meters (thank heavens!)
Minimum focus (m (feet)) 0.35 (1.15)
The Sonnar T FE 35mm F2.8 ZA is compatible with the
range of a 35mm format image sensor.
The other lenses are compatible with the range of an APS-C
sized image sensor. A camera equipped with a 35mm format
image sensor can be set to shoot at APS-C size.
Minimum focus (m (feet)) 0.35 (1.15)
The Sonnar T FE 35mm F2.8 ZA is compatible with the
range of a 35mm format image sensor.
The other lenses are compatible with the range of an APS-C
sized image sensor. A camera equipped with a 35mm format
image sensor can be set to shoot at APS-C size.
Aug 31, 2013 at 01:03 PM
p.26 #10Our prayers have been answered: Nex-FF in 2 months
Yeah, that's much more like it.
Aug 31, 2013 at 01:19 PM
p.26 #11Our prayers have been answered: Nex-FF in 2 months
finally reasons to hope and what this might mean for the sharpness of alternative lenses
I was expecting bigger, but like this size much more
I was expecting bigger, but like this size much more
Aug 31, 2013 at 02:39 PM
p.26 #12Our prayers have been answered: Nex-FF in 2 months
Right. I'm not too pessimistic yet. If Sony is serious one logical business path would be to go for a sort of Leica market with size advantage and a sensor a'la avant garde. Would not go unnoticed, in particular if reasonable catering for M lenses are included.
There are other business paths too I know, I just like to be optimistic here
There are other business paths too I know, I just like to be optimistic here
Aug 31, 2013 at 02:55 PM
p.26 #13Our prayers have been answered: Nex-FF in 2 months
that new Sonnar has aprox. the same diameter of the old C/Y Distagon 35/2.8 but it's significatively shorter ( 36 vs. 46 mm) and lighter ( 120 vs 245 gr). I wonder if that means that the optical design is more alike to a classic RF lens than to a SLR one ?.
Aug 31, 2013 at 03:40 PM
p.26 #14Our prayers have been answered: Nex-FF in 2 months
sebboh wrote:
it also lists the lens as half the length of the crop ZA 24/1.8 and has one less element. the slower speed and less demanding sensor of FF means that they can make a smaller lens than the ZA 24/1.8 that appears to be somewhat similar in size and complexity to the zm 35/2.8. seems entirely reasonable to me, zeiss has made many much smaller f/2.8 ~35mm lenses (see contax T cameras). if this rumor is true it means that the FF NEX with 35/2.8 could end up being smaller than the NEX-7 + 24/1.8 combo while providing the same...Show more →
It makes a lot of sense to release small f/2.8 lenses with a FF NEX. They are quivalent to f/1.8 on APS-C and f/1.4 on u4/3 in terms of DOF and light gathered (not per sensor area but per the whole image) hence shutter speed. Then it will be possible to go small and light with a set of primes. For some time, only u4/3 offered a great selection of really small lenses for use on a small camera. If we want to use a really fast and excellent lens, we can do that on the same camera. Really a lot of flexibility within one system. If you wanted to do that with u4/3, the lenses got really big and expensive with compromised image quality compared to FF equivalents.
philber wrote
The German specification sheet looks strange in one respect. Weight looks like 120g, or hardly more than half the crop 24 f:1.8. That a Zeiss FF prime that is so light sounds unlikely, don't you think? My guess? APS-c pancake. Or a typo...It makes a lot of sense to release small f/2.8 lenses with a FF NEX. They are quivalent to f/1.8 on APS-C and f/1.4 on u4/3 in terms of DOF and light gathered (not per sensor area but per the whole image) hence shutter speed. Then it will be possible to go small and light with a set of primes. For some time, only u4/3 offered a great selection of really small lenses for use on a small camera. If we want to use a really fast and excellent lens, we can do that on the same camera. Really a lot of flexibility within one system. If you wanted to do that with u4/3, the lenses got really big and expensive with compromised image quality compared to FF equivalents.
Aug 31, 2013 at 03:42 PM
p.26 #15Our prayers have been answered: Nex-FF in 2 months
The camera or cameras will very likely be small and light, therefore, as previously rumoured. Another hit.
Aug 31, 2013 at 03:45 PM
p.26 #16Our prayers have been answered: Nex-FF in 2 months
artur5 wrote:
that new Sonnar has aprox. the same diameter of the old C/Y Distagon 35/2.8 but it's significatively shorter ( 36 vs. 46 mm) and lighter ( 120 vs 245 gr). I wonder if that means that the optical design is more alike to a classic RF lens than to a SLR one ?.
I dont know too much about that but in general the CY lenses have longer (/worse) MFD while doing nice things slightly further back. My personal non-scientific hunch is that the short MFD required by modern lenses sacrifice some overall attractive optical properties further back.
Edited on Sep 01, 2013 at 01:02 AM · View previous versions
that new Sonnar has aprox. the same diameter of the old C/Y Distagon 35/2.8 but it's significatively shorter ( 36 vs. 46 mm) and lighter ( 120 vs 245 gr). I wonder if that means that the optical design is more alike to a classic RF lens than to a SLR one ?.
I dont know too much about that but in general the CY lenses have longer (/worse) MFD while doing nice things slightly further back. My personal non-scientific hunch is that the short MFD required by modern lenses sacrifice some overall attractive optical properties further back.
Edited on Sep 01, 2013 at 01:02 AM · View previous versions
Aug 31, 2013 at 04:03 PM
p.26 #17Our prayers have been answered: Nex-FF in 2 months
Very interesting. This one is 7/5, just like the biogon ZM 35 2.8! the length is even a bit shorter than the ZM 35 2.8 + adapater. This makes me wonder whether they have solved the sensor issue and made it more compatible with non telecentric lenses.
Aug 31, 2013 at 05:42 PM
p.26 #18Our prayers have been answered: Nex-FF in 2 months
Alundeb says, "it makes a lot of sense to release small f/2.8 lenses with a FF NEX. They are quivalent to f/1.8 on APS-C and f/1.4 on u4/3 in terms of DOF and light gathered (not per sensor area but per the whole image) hence shutter speed."
IS there a formula to figure this, for example if you take the Voigt 50mm 1.1, what is it DOF equivalent on a APSC and a u4/3 sensor camera? thanks joanlvh
IS there a formula to figure this, for example if you take the Voigt 50mm 1.1, what is it DOF equivalent on a APSC and a u4/3 sensor camera? thanks joanlvh
Aug 31, 2013 at 08:24 PM
p.26 #19Our prayers have been answered: Nex-FF in 2 months
Joan, on APS-C it's around 1.5 and on u4/3 it's around 2.2 in DOF equivalent. Basically 2 f/stops when you reduce the sensor size by half.
Aug 31, 2013 at 11:47 PM
p.26 #20Our prayers have been answered: Nex-FF in 2 months
edwardkaraa wrote:
Joan, on APS-C it's around 1.5 and on u4/3 it's around 2.2 in DOF equivalent. Basically 2 f/stops when you reduce the sensor size by half.
But the DOF remains the same. Hence, when you use a 35mm on FF, you get the same DOF as when you use it on APS-C or M 4/3. But, because you have a different equivalent focal length, the ratio of DOF to FL changes. Meaning, if you are using APS-C, you get a different DOF on your "equivalent 35mm" (meaning, a 24mm) than you would on a 35mm on FF.
Joan, on APS-C it's around 1.5 and on u4/3 it's around 2.2 in DOF equivalent. Basically 2 f/stops when you reduce the sensor size by half.
But the DOF remains the same. Hence, when you use a 35mm on FF, you get the same DOF as when you use it on APS-C or M 4/3. But, because you have a different equivalent focal length, the ratio of DOF to FL changes. Meaning, if you are using APS-C, you get a different DOF on your "equivalent 35mm" (meaning, a 24mm) than you would on a 35mm on FF.
Sep 01, 2013 at 01:22 AM