Sigma 85mm f/1.4 DG Art Series Lens Samples
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nope 
according to SIGMA: "full-time" manual focus, wherein AF can be overridden without disengaging the AF mode altogether. instead of flickin the AF switch on the lens from Auto to MF, you can press shutter button half way and turn focusing ring by certain angle. angle can be adjusted via USB doc. this will temporary disengage AF
"... It is possible to select Full-time MF function (Manual Override) ON / OFF, and adjust the timing to operate Full-time MF function.
(Full-time MF Setting Screen) Setting Full-time MF function ON / OFF It is possible to select the Full-time MF function ON / OFF. (When the shutter button is half-pressed while auto focusing is in operation, Full-time MF is activated by rotating the focus ring..."
not all lenses has this feature. Aa far as I remember 50A - has FTO, 35A- does not have this feature.
120-300 2.8 Sports - def. has it.
according to SIGMA: "full-time" manual focus, wherein AF can be overridden without disengaging the AF mode altogether. instead of flickin the AF switch on the lens from Auto to MF, you can press shutter button half way and turn focusing ring by certain angle. angle can be adjusted via USB doc. this will temporary disengage AF"... It is possible to select Full-time MF function (Manual Override) ON / OFF, and adjust the timing to operate Full-time MF function.
(Full-time MF Setting Screen) Setting Full-time MF function ON / OFF It is possible to select the Full-time MF function ON / OFF. (When the shutter button is half-pressed while auto focusing is in operation, Full-time MF is activated by rotating the focus ring..."
not all lenses has this feature. Aa far as I remember 50A - has FTO, 35A- does not have this feature.
120-300 2.8 Sports - def. has it.
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The first part of the quote indicates that MO and FTO are the same thing: "... It is possible to select Full-time MF function (Manual Override) ON / OFF" witch is confusing since the letter to their users states "MO (Manual Override) function is unavailable with this camera (Full-time Manual function can be offered)." Unless they mean that the MF/AF switch wont work with certain cameras.Alex_M said:nope
"... It is possible to select Full-time MF function (Manual Override) ON / OFF, and adjust the timing to operate Full-time MF function.
(Full-time MF Setting Screen) Setting Full-time MF function ON / OFF It is possible to select the Full-time MF function ON / OFF. (When the shutter button is half-pressed while auto focusing is in operation, Full-time MF is activated by rotating the focus ring..."
not all lenses has this feature. Aa far as I remember 50A - has FTO, 35A- does not have this feature.
120-300 2.8 Sports - def. has it.
I don't have a Siggy or one of cameras indicated but is of course curious in how future safe an investment in Siggy gear would be...
Whatever. Time will tell...
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Maiaibing said:Alex_M said:
Wow - Lenstip is not holding back!:
"I imagine Zeiss must gnash their collective teeth quite strongly. They invented the Otus series which was supposed to prove that, for a quite astronomical price, you can produce an optically outstanding lens practically without any flaws. Meanwhile Sigma presented their 85 mm device which is not only able to win a duel with the Otus 1.4/85 in the most important categories but also breaks the resolution record of the Otus 1.4/28 on the sensor of the Canon EOS 5D Mark III. Mind you it is over three times cheaper. Nothing to add I suppose – a fully deserved the Lenstip Editor’s Choice award."
I of course do mind that its only 1/3 of the price of the Otus - people will think I'm cheap. But hey. For a couple of grand I'll live with that...
I regard LensTip/Mr. Starczewski as the best and most objective source of reviews. Second best is Photozone. Others seem biased in one way or another.
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1. Manual Override:
engage AF by half pressing shutter button, turn focusing ring to finetune the focus (even in AI Servo mode). AF focus is not disengaged.
2. FT Manul Focus:
half press shutter button and turn focus ring by more than certain angle - AF will be disengaged lens will continue to operate in MF mode.
IMHO - luck of MO is nothing to worry about. If you prefer to focus manually, there is AF-MF switch located on the barrel of the lens. FT MF - is usefull but available only for certain lenses.
"... Unless they mean that the MF/AF switch wont work with certain cameras.
..."
No, AF-MF switch operates as it should.
engage AF by half pressing shutter button, turn focusing ring to finetune the focus (even in AI Servo mode). AF focus is not disengaged.
2. FT Manul Focus:
half press shutter button and turn focus ring by more than certain angle - AF will be disengaged lens will continue to operate in MF mode.
IMHO - luck of MO is nothing to worry about. If you prefer to focus manually, there is AF-MF switch located on the barrel of the lens. FT MF - is usefull but available only for certain lenses.
"... Unless they mean that the MF/AF switch wont work with certain cameras.
..."
No, AF-MF switch operates as it should.
-1 said:The first part of the quote indicates that MO and FTO are the same thing: "... It is possible to select Full-time MF function (Manual Override) ON / OFF" witch is confusing since the letter to their users states "MO (Manual Override) function is unavailable with this camera (Full-time Manual function can be offered)." Unless they mean that the MF/AF switch wont work with certain cameras.Alex_M said:nope
"... It is possible to select Full-time MF function (Manual Override) ON / OFF, and adjust the timing to operate Full-time MF function.
(Full-time MF Setting Screen) Setting Full-time MF function ON / OFF It is possible to select the Full-time MF function ON / OFF. (When the shutter button is half-pressed while auto focusing is in operation, Full-time MF is activated by rotating the focus ring..."
not all lenses has this feature. Aa far as I remember 50A - has FTO, 35A- does not have this feature.
120-300 2.8 Sports - def. has it.
I don't have a Siggy or one of cameras indicated but is of course curious in how future safe an investment in Siggy gear would be...
Whatever. Time will tell...
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Oki... Siggys with MO functionality wont work as L lenses on the indicated cameras for now then...
Alex_M said:1. Manual Override:
engage AF by half pressing shutter button, turn focusing ring to finetune the focus (even in AI Servo mode). AF focus is not disengaged.
2. FT Manul Focus:
half press shutter button and turn focus ring by more than certain angle - AF will be disengaged lens will continue to operate in MF mode.
IMHO - luck of MO is nothing to worry about. If you prefer to focus manually, there is AF-MF switch located on the barrel of the lens. FT MF - is usefull but available only for certain lenses.
"... Unless they mean that the MF/AF switch wont work with certain cameras.
..."
No, AF-MF switch operates as it should.
-1 said:The first part of the quote indicates that MO and FTO are the same thing: "... It is possible to select Full-time MF function (Manual Override) ON / OFF" witch is confusing since the letter to their users states "MO (Manual Override) function is unavailable with this camera (Full-time Manual function can be offered)." Unless they mean that the MF/AF switch wont work with certain cameras.Alex_M said:nope
"... It is possible to select Full-time MF function (Manual Override) ON / OFF, and adjust the timing to operate Full-time MF function.
(Full-time MF Setting Screen) Setting Full-time MF function ON / OFF It is possible to select the Full-time MF function ON / OFF. (When the shutter button is half-pressed while auto focusing is in operation, Full-time MF is activated by rotating the focus ring..."
not all lenses has this feature. Aa far as I remember 50A - has FTO, 35A- does not have this feature.
120-300 2.8 Sports - def. has it.
I don't have a Siggy or one of cameras indicated but is of course curious in how future safe an investment in Siggy gear would be...
Whatever. Time will tell...
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This is a lens I've waited for for a very long time. I'm a great fan of IS, if available I always buy a stabilised lens. However, now it is here I can't decide if I really want the IS (principally the extra cost). Were I using this lens professionally.(with a paying client) I would be using a shutter speed of at least 1/125th and probably 1/160th rendering the IS fairly pointless (can't afford subject movement with a paying client).
This is probably the reason canon have never done an 85mm lens with IS before now.
This is probably the reason canon have never done an 85mm lens with IS before now.
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Go onto "Kickstarter" and search "Dust Donut" this maybe your solution.CanonFanBoy said:sleepnever said:Added note: I told the rep, "Man, these new lenses are amazing, but could you PLEASE weather seal them? And before you say why would you do that, it's the pacific northwest... not everyone shoots in the summer time only." He laughed and then in a real somber face he says "We can't weather seal them. Cannon owns the patent on that weather sealing primes." I looked at himand he said "yeah. And we're a family owned company and can't compete." That's messed up.
I very much doubt there is just one patent for weather sealing primes and that this keeps Sigma from doing so. Who owns the patent weather sealing zooms?
The other thing is that patents have a term. They expire.
I don't think a sales rep. is the guy to rely on for that kind of info. Nor is he the guy to ask to weather seal the product line.
I think he was pulling out an answer for you from some dark region of his body. It would be like a car salesman telling you the same sort of thing about a car. They (Sales reps) have no idea or influence with the company.
Both Nikon and Tamron have weather sealed primes and zooms. Sigma either doesn't see the need or has no idea how to accomplish it, kinda like Sigma's auto focus (From what I've read about Sigma's autofocus).
Wait... who owns THE patent on auto focus? Or, for that matter, cameras and lenses? Camera straps? Tripods? You get the picture.
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Gents,
Sigma 12-24 Art and 85 Art lenses come with dust- and splash-proof mount construction:
"... The lens mount incorporates rubber sealing to protect the mount from dust and water drops. The front and rear lenses feature a water- and oil-repellent coating that is particularly useful when shooting in a drizzle, near ocean spray, and in a wide variety of other conditions ..."
http://www.sigma-global.com/en/lenses/cas/product/art/a_85_14/features/
Sigma 12-24 Art and 85 Art lenses come with dust- and splash-proof mount construction:
"... The lens mount incorporates rubber sealing to protect the mount from dust and water drops. The front and rear lenses feature a water- and oil-repellent coating that is particularly useful when shooting in a drizzle, near ocean spray, and in a wide variety of other conditions ..."
http://www.sigma-global.com/en/lenses/cas/product/art/a_85_14/features/
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