Bro ... may I ask ... wot body U using ... ?
Sigma 30mm f/1.4 User Group
- Thread starter baileys
- Start date
- Status
Bro ... may I ask ... wot body U using ... ?
chooster
New Member
I am using a 550D
Nikon AF-S 24/1.4 vs Sigma 30/1.4. Both on a D90. The AF-S 24/1.4 is a S$2.9k piece of glass.
Test condition : 1/20s, f1.4, ISO 1600. SB-900 AF assist + flash. So shutter is locked at 1/60s, all shot at f1.4 to excerbate AF inaccuracies.
AF, 24/1.4 no horse run. Faster lock-on plus 100% accuracy. I shot a person's face, AF at the nostrils. 5 out of 5 frames nailed it sharp 100% for AF. Center point cross hair AF.
AF Sigma 30mm, hunt a bit, probably 2-3X slower lock-on. 0 out of 5 all back focus for nostrils. WTF?
AF 24/1.4 on person's eyes. Again 5/5 AF nailed it 100%.
AF Sigma 30mm, better. 3 out of 5 frames AF nailed it 100%. Also noticeably slower.
Don't expect the AF-S 24/1.4 to work miracles with the side non-cross-hair AF points. For the Sigma 30/1.4, I usually whack at least 5 frames before I can get 1 to be sharp for shooting people at f1.4-f2 range. :sweat:
Tomorrow shooting Singapore Flyer ROM, so lets see. 5.30-7.30, so there will be a mixture of bright, not so bright, and freaking !@$#!@ dark conditions.
But here's the good news, the Sigma 30/1.4 is nearly as sharp as the AF-S 24/1.4 when it is in focus. I still can see CA in the 24/1.4, but that's on the DX body. If it is working on a FX, probably it would not be stressed as much and can be better (its supposed to be sharp till the corners even on FX - you pay a lot of premium for this for a WA f1.4).
Test condition : 1/20s, f1.4, ISO 1600. SB-900 AF assist + flash. So shutter is locked at 1/60s, all shot at f1.4 to excerbate AF inaccuracies.
AF, 24/1.4 no horse run. Faster lock-on plus 100% accuracy. I shot a person's face, AF at the nostrils. 5 out of 5 frames nailed it sharp 100% for AF. Center point cross hair AF.
AF Sigma 30mm, hunt a bit, probably 2-3X slower lock-on. 0 out of 5 all back focus for nostrils. WTF?
AF 24/1.4 on person's eyes. Again 5/5 AF nailed it 100%.
AF Sigma 30mm, better. 3 out of 5 frames AF nailed it 100%. Also noticeably slower.
Don't expect the AF-S 24/1.4 to work miracles with the side non-cross-hair AF points. For the Sigma 30/1.4, I usually whack at least 5 frames before I can get 1 to be sharp for shooting people at f1.4-f2 range. :sweat:
Tomorrow shooting Singapore Flyer ROM, so lets see. 5.30-7.30, so there will be a mixture of bright, not so bright, and freaking !@$#!@ dark conditions.
But here's the good news, the Sigma 30/1.4 is nearly as sharp as the AF-S 24/1.4 when it is in focus. I still can see CA in the 24/1.4, but that's on the DX body. If it is working on a FX, probably it would not be stressed as much and can be better (its supposed to be sharp till the corners even on FX - you pay a lot of premium for this for a WA f1.4).
MFD shots on the 24/1.4 is a breeze at f1.4 on the DX body. Nothing throws it off. Sigma you need to spend a whole lot more time and chimp and re-shoot and chimp. My Sigma is a good copy (as in no permanent very huge backfocus or front focus for high-contrast objects), just that the AF sometimes has a mind of its own. The whole purpose of this lens is that you pay top dollars for this and FX WA f1.4. This is even more expensive than Canon L glass actually.
But I am surprised that the Sigma performs so well even at f1.4, or rather the Nikon is not much better optically. But again, I need to go out and shoot and test to see, esp Omega23 said it is a killer under good light.
But I am surprised that the Sigma performs so well even at f1.4, or rather the Nikon is not much better optically. But again, I need to go out and shoot and test to see, esp Omega23 said it is a killer under good light.
jasonyjw
Member
i bought mine at SLRR. cheapest among all funan shops.
How much Bro?
chicken chop
Member
Can this len be use on Nikon D3100?
cichlid
Senior Member
kingpin8
New Member
magicianhisoka
Senior Member
amazing...then again even canon is busy. my calibration going to take 3-5 days
serverxeon
New Member
is calibrating FOC for grey sets? or local but out of warranty sets?
anyway how do i test for the focusing, backfocus, sharpness etc problems at home?
anyway how do i test for the focusing, backfocus, sharpness etc problems at home?
uranium2k
Member
chooster
New Member
I think for this lens, you should seriously consider a local set. There are people who post here that they were charge $80 for calibration. Some people went in to calibrate twice. So better play safe. Just in case you want to change body, then have to calibrate again.
- Status
Similar threads
