My camera (Canon 70D) comes with AF adjustment menu that can be customized per each lens. Does this USB dock become redundant then?
139271
If Canon is like Nikon, the autofocus fine adjust only allows fine tuning at 1 focal range for the lens. You have to choose at what focal range you set the adjustment at, but with some lenses it's possible that a different focal ranges, the focus may still drift slightly.The USB dock allows you to set adjustments at several different focal ranges for the that particular lens. Only certain Sigma lenses, particularly the new ART line, work with the USB dock.Another feature of the dock that the camera itself won't have, is the ability to directly update the firmware of the lens, which is excellent for future camera upgrades when the camera may have communication issues with the lens. If Canon is like Nikon, the autofocus fine adjust only allows fine tuning at 1 focal range for the lens. You have to choose at what focal range you set the adjustment at, but with some lenses it's possible that a different focal ranges, the focus may still drift slightly.The USB dock allows you to set adjustments at several different focal ranges for the that particular lens. Only certain Sigma lenses, particularly the new ART line, work with the USB dock.Another feature of the dock that the camera itself won't have, is the ability to directly update the firmware of... » Read More If Canon is like Nikon, the autofocus fine adjust only allows fine tuning at 1 focal range for the lens. You have to choose at what focal range you set the adjustment at, but with some lenses it's possible that a different focal ranges, the focus may still drift slightly.The USB dock allows you to set adjustments at several different focal ranges for the that particular lens. Only certain Sigma lenses, particularly the new ART line, work with the USB dock.Another feature of the dock that the camera itself won't have, is the ability to directly update the firmware of the lens, which is excellent for future camera upgrades when the camera may have communication issues with the lens. « Show Less
139272
This dock only works with specific Sigma lenses. I returned mine because my Sigma lens was not new enough.
2055699
Freda, as I have found, if you have a laptop that has a port which will accept your digital camera's memory card, then you don't need the dock, good luck, John
1326277
Well u are having several thousand worth camera, and 900$ worth lens.Dock station simply helps u to get the BEST out of it. For me - i have 35mm art and nikon d7100 (soon to be upgraded for FX) in 1-3m everything was perfect, but at close end in misfocused by about 2mm and at infinity i also got a slightly soft (a bit miss focused) shoots. Dock station simply helped me to adjust lens for diamond sharp photos from closes focusing till infinity. well i do know, my body is not perfect and focusing system miss focuses for several lenses. But by sigma - that i can adjust focus for each focusing section separately - i simply love it :) you fix it once (takes about 15mm for 35mm) and in stays for ever :) Well u are having several thousand worth camera, and 900$ worth lens.Dock station simply helps u to get the BEST out of it. For me - i have 35mm art and nikon d7100 (soon to be upgraded for FX) in 1-3m everything was perfect, but at close end in misfocused by about 2mm and at infinity i also got a slightly soft (a bit miss focused) shoots. Dock station simply helped me to adjust lens for diamond sharp photos from closes focusing till infinity. well i do know, my body is not perfect and focusing system miss focuses for several lenses. But by sigma - that i can adjust focus for each... » Read More Well u are having several thousand worth camera, and 900$ worth lens.Dock station simply helps u to get the BEST out of it. For me - i have 35mm art and nikon d7100 (soon to be upgraded for FX) in 1-3m everything was perfect, but at close end in misfocused by about 2mm and at infinity i also got a slightly soft (a bit miss focused) shoots. Dock station simply helped me to adjust lens for diamond sharp photos from closes focusing till infinity. well i do know, my body is not perfect and focusing system miss focuses for several lenses. But by sigma - that i can adjust focus for each focusing section separately - i simply love it :) you fix it once (takes about 15mm for 35mm) and in stays for ever :) « Show Less
1179426
That lens is not compatible with the dock, please go to the following link for the list of lenses that are currently compatible. http://www.sigma-global.com/en/lenses/cas/product/usb.html
1326276
If your lens is working out of the box, there isn't any need for this dock in my opinion. I've only used it once and didn't see any difference in my lens on a D800. This item should of been included with the Len when you buy it.
217331
the adapter has a ring that lets you adjust aperture. yould set exposure, check the lcd screen & shoot. if you change subject, subject distance, light changes you will again have to adjust your exposure. just like in the old film days. reminder- this adapter is for manual exposure/ manual focus only when you use maxxum / sony lenses on a nikon af/ d series camera
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The more I read about it online, the more it sounds like it's the iA 'algorithm' that is slightly flawed. Many blogs/websites all sight setting adjustments as the easy fix. Not so cool for someone like me that was hoping to rely on the iA for my day-to-day pics, but I guess it's a learning opportunity! Good luck yourself, I will say that other than this one issue I love every aspect of the camera. Will play with settings tonight to see if I can crack it.. ~Rich
1738455
The adapter doesn't change anything. The camera does, if you're going to an MFT format.
1994846
The Minolta adapter has a small lens built in to the adapter. I didn't find this worked as well as the adapters with out an additional lens. I didn't like the results. I used it once.
1554530
This only works for the three new types of Sigma lenses which includes the ART series, the Sigma Sport series and the Sigma Contemporary series. This dock WILL work for the (50mm F1.4 DG HSM /A) as it is part of the ART series but I believe the one you have is the older version and not the ART series lens so it would not work for your lens.
900471
If you mainly use AF I would not use this screen. It is designed for MF and would make the viewfinder a stop darker. I actually removed the screen and went back to the original screen because of the 1 stop darker viewfinder.
833868
I may very well be in this very situation. I have ordered this lens used from a private seller thru Amazon.com. It was sold under the heading of being an OS system lens. However I have reason to believe it is not. I believe that 'Pastor Aguiar' has purchased the older model of this lens which is sold thru Amazon.com with no AF listed in the posted add. However it does have AF. I am guessing that the lens only has a limiting switch on the side and no OS or AF switches. Judging from the date or your posted question, I bet that I am a little late with this answer.
893044
I found it. The menu has a setting for a lens that has an aperture ring. So all I did was change the setting to "permitted" and it worked. So thanks to K. Johnson for the response and I will now put this forum to rest. What a great little camera, the Pentax Kx! And I just found out that it takes multiple exposure pictures; how much fun is that?
1801358
Yes. The camera lens and all the other ports are covered by rubber flaps that kind of snap in place. The cover for the camera lens peels back and pivots out of the way. It takes some fumbling, but it does work well.
401429
If the lens works fine with the camera as-is and focuses well I wouldn't think so. Have you checked the Sigma site? I may be wrong but I don't think the dock is even compatible with many of their lenses. Hope this helps.
600121
The thing that makes it is the lenses I have had no problems with mine and it break down in what you want to do with it . Just keep your file updated and you should be happy with it.
1277388
No. You can adjust many things manually - ISO. Exposure etc. the flash has two red eye reduction modes.