Pentax K110D and Sigma 17-35mm F2.8-4 EX DG

Any digital single lens reflex camera body , rebel t3i, go to Canon's USA website and look at dslr cameras

Hi,

There is no update for the Sigma lens since it is inter-related to the update you do for your camera, however you can check if there is any update available for your Canon Camera and it should automatically fix any issues you have with the lens/camera.

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Hi there,

Well you can please follow the link below to get your manual -

http://www.dphotojournal.com/sigma-105mm-f28-ex-dg-macro-reviews-sample-photos/

(click on the manual tab and then click on - Download Sigma 105mm f/2.8 EX DG Macro User Manual (PDF – 67kb), thats it)

Good Luck!!

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It all depends upon the lens. Not all lenses can accept teleconverters, usually due to projecting rear elements incorporated into the individual lens design. With such lenses, manufacturers will either advise that a particular lens will not be compatible with a teleconverter or for some models may produce a custom matched model usually for that lens alone.

Which exact lens are you trying to fit to your Sigma 1.4x EX APO DG teleconverter?

Hi Is the 28-70 a DF type if so it will work on a canon DSLR but if its the older one with the scale ring is on the outside of the lens it will need a rechip but I think thay are no longer avabile the 70-300 if is a super it will work or need a rechip if its a older one with a macro switch held on the lens with 2 screws it to old to up grade

Hi It sounds as if the iris linkage is out of adjustment If in the uk email me [email protected]

You need to send it back to a sigma agent

The rear element of the lens is near the mount the converter
will not fit the conveter needs about 10mm space at the
back of the lens

Unfortunately, this lens is not supported by the D40 due to Nikon's unfortunate decision to leave out the autofocus motor from this camera.  This is why I tell folks not to waste their money on the D40 - access to the many, many, many lenses that Nikon has made over the years, many of which are available used for a substantial savings, is lost on this camera.  The only Nikon lenses that work are AF-S lenses, and some third party lenses that have their own internal motors.  I got a list of Sigma lenses that are compatible with the D40 for you:
The list of compatible Sigma lenses for the Nikon D40 as of the current date is as follows:

• 10-20mm F4-5.6 EX DC
• 12-24mm F4.5-5.6
• 17-35mm F2.8-4 DG
• 50-500mm F4-6.3 DG
• APO 50-150mm F2.8 EX DC HSM
• 70-200mm F2.8 DG MACRO
• 80-400mm F4.5-5.6
• 100-300mm F4 DG
• 120-300mm F2.8 DG
• 300-800mm F5.6 DG
• 14mm F2.8 EX
• 30mm F1.4 EX DC HSM
• 150mm F2.8 EX DG
• 180mm F3.5 EX DG
• 300mm EX DG
• 500mm EX DG
• 800mm f5.6 EX DG

from here:  http://www.imaging-resource.com/NEWS/1177682545.html
Sorry for the bad news.  The cheaper thing at this point may be to sell the D40 and get a D80.  I personally have a D70S, but that is no longer made.