Should I return my Sigma 50mm 1.4 HSM ?

**Digitalis** · 03-30-2011, 07:16 AM

Originally posted by icypepsi

I would surely have gone for the FA 77, if it were SDM

why is the lack of SDM stopping you? the FA77 is a brilliant lens.

Ubuntu_user · 03-30-2011, 09:21 AM

Originally posted by Digitalis

why is the lack of SDM stopping you? the FA77 is a brilliant lens.

He probably likes the quieter AF (probably speed too)

icypepsi · 03-31-2011, 10:11 AM

Originally posted by Digitalis

why is the lack of SDM stopping you? the FA77 is a brilliant lens.

Sorry, I got a bit emotional with the decision. SDM shouldn't be so much of a problem for me, as long as it focuses it right, given the problems that there are at F1.4. Mostly, I don't like the slow AF, that gets to be noisy too. Sometimes the slow AF and noise can be quite embarrassing. It's difficult for candid shots when people are usually talking/walking/expressing, etc. Take for instance following a F1.4 focus plane wafer over the eye of a toddler. I don't think even SDM can do it. But, it will cover other situations that screwdrive will not. I feel that screwdrive is better for smaller apertures where the DOF is ok to accommodate for small erratic subject movements.

Besides, I don't know if the missing coating on FA77 will affect DSLRS. And I'm not a pro with experience to tell the difference. So, it's more of not taking a chance there. And then, if you are spending almost the same amount of money, why not go for a better technology, given the comparable IQ?

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03-30-2011, 07:16 AM	#46
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by icypepsi I would surely have gone for the FA 77, if it were SDM why is the lack of SDM stopping you? the FA77 is a brilliant lens.

03-30-2011, 09:21 AM	#47
Ubuntu_user Veteran Member Join Date: Mar 2010 Photos: Gallery \| Albums Posts: 1,545	Originally posted by Digitalis why is the lack of SDM stopping you? the FA77 is a brilliant lens. He probably likes the quieter AF (probably speed too)

03-31-2011, 10:11 AM	#48
icypepsi Forum Member Join Date: Sep 2009 Location: New Jersey Posts: 81 Original Poster	Originally posted by Digitalis why is the lack of SDM stopping you? the FA77 is a brilliant lens. Sorry, I got a bit emotional with the decision. SDM shouldn't be so much of a problem for me, as long as it focuses it right, given the problems that there are at F1.4. Mostly, I don't like the slow AF, that gets to be noisy too. Sometimes the slow AF and noise can be quite embarrassing. It's difficult for candid shots when people are usually talking/walking/expressing, etc. Take for instance following a F1.4 focus plane wafer over the eye of a toddler. I don't think even SDM can do it. But, it will cover other situations that screwdrive will not. I feel that screwdrive is better for smaller apertures where the DOF is ok to accommodate for small erratic subject movements. Besides, I don't know if the missing coating on FA77 will affect DSLRS. And I'm not a pro with experience to tell the difference. So, it's more of not taking a chance there. And then, if you are spending almost the same amount of money, why not go for a better technology, given the comparable IQ?