Rmlaooto word jumble: Six Sigma

Question edited for clarity.

You get the Sigma lens for the camera in Canon fit.

https://www.google.com/search?q=sigma+lens+af+75-300+for+canon+rebel+xti

Can you use Sigma lenses on Canon cameras?
Since Sigma lenses are made to be fully compatible with Canon cameras, they are backwards-compatible. This means that you can use a Sigma lens on a Canon DSLR camera. Similarly, the Sigma cameras are backwards-compatible with Canon lenses. Macro adapter loses the AF feature.

https://www.google.com/search?q=sigma+lens+af+75-300+mount+adapter+ring+for+canon+rebel+xti

Everyone of the others who haven't, except those that don't

Before you can expect an answer, you have to fully specify the question. I can give you the answer to the daily jumble in my hometown newspaper, but I sincerely doubt it's the same answer to the jumble you're asking about.

I don't know about the SA-7, but the SA-5 doesn't have an on/off switch as such. Pressing the shutter button halfway activates the autofocus and turns on the light meter. The camera switches off after six seconds of inactivity to conserve batteries, though the shutter can still be released accidentally. Turning the mode dial to the "L" position will lock the shutter and prevent accidental release.

You can find a manual for the SA-5 at http://www.butkus.org/chinon/sigma.htm . It's not ideal, but it should help you get started.

It should have a year parts and labor warranty with the manufacterer. Contact Akai for auth serv. you will void your warranty if you tamper with it.Check connectiond on t con board lvds cables. same on all inputs?T con board could be bad.

It's almost certainly got a stripped drive gear. This is not a DIY repair, but if the rest of the lens is in excellent condition and not more than around five years old then it's probably cost effective to get it repaired. Sigma are normally excellent at supplying spare parts for their lenses.

Get an estimate for the work from a photographic repair specialist but be prepared for at least a four to six week turnaround time as that's what I'm currently finding for good repair outlets on both sides of the Atlantic.

It sounds like that the drive belt has worn you need a new one

All auto-focus lens have some sort of 'chip' inside .. Sigma 'reversed engineered' Canon's chip - however every time Canon brings out a new camera there is a chance the Sigma lens chip won't work (this is why you see lots of Sigma lens on eBay :-) )

IF you can prove you purchased your lens direct from an authorised Sigma dealer, Sigma will update the chip for free .. otherwise they charge about £35 .. you pay postage in both cases ..

Visit the Sigma web site for further info.

This sounds like it might be a defective CCD imager. This will get worse with time, and the pictures may be jumbled next. Canon should fix this for you for free, including free shipping both ways. This is regardless of your camera's warranty status. Please check the following two links for more info:

http://camerarepair.blogspot.com/2007/11/canon-digital-cameras-showing-black.html

http://www.usa.canon.com/consumer/controller?act=PgComSmModDisplayAct&fcategoryid=225&modelid=13390&keycode=2112&id=29819

Applicable cameras include:
A40, A60, A70, A75, A80, A85, A95, A300, A310, S1 IS, S60, S200, S230, S330, S400, S410, S500, SD100, SD110, IXUS V2/300/400/430/500, IXY Digital 200a/300a/400/450/500