Jerky_san wrote:
So ran this same test three this time paying attention to the shutter rates and other things a lot more and attempting to remove me from the equation threw it on auto and let the camera figure its thing out. ISO was very low(around 100) shutter speed varies slightly but most around 1/800. It's literally a very bright clear day out so should have no issues. I know I should probably do a mechanical shutter for this test but frankly, I bought an A1 to use the electronic so electronic shutter..
First Test The kid is in the center of the frame jogging at the camera while I pull back the zoom. Out of 10 pictures non were what I would term "sharp", 4 were good if you didn't pixel peep, and 6 were bad. Like totally out of focus. AF-C wide
Second test no pulling back zoom.. just taking pictures as said kid runs at the camera. 35mm when they are out far away it's not as sharp and as they get closer the sharpness improves dramatically till they are basically a foot or two away. AF-C wide
Third test no pulling back zoom.. just taking pictures as said kid runs at the camera. 150mm sharp starting out. As they get closer it becomes less sharp. Only 1 picture out of all of these wasn't clear. AF-C wide
I'm fairly certain there wasn't any camera shake in these.. I took them on my knees and generally held my breath to ensure even my breathing movement wouldn't affect the camera. I need to get my tripod out but just don't have a lot of time. Honestly though feels like the autofocus on the lens just can't keep up. I wish I had more lens to test with but I've not got them ordered yet. If I'm being brutally honest if the Tamron 35-150 goes on sale again at Amazon this is going back. It honestly might just go back anyways and I pay full price for the Tamron. If the subjects are still it does take very good pictures. My wife captured some very nice ones of my kid's when we were taking a walk with my father's dog. All of them were still though. The ones where she tried to capture my son moving were not clear. Hence why I started these tests to see if it was something she was doing or not. Though she is experienced in taking pictures.. Honestly probably more than me. She just doesn't have the time to mess with things these days.
Btw probably expecting to much out of this lens tbh but just guess wanted to post my findings.
If you're wondering why I don't post the pictures I don't feel comfortable posting pictures of my kids online. Sorry.. If I can find a subject(like my dad's dog ) to test with I'll post them up....Show more →
Well, if you want the best tracking you need a Sony lens, e.g. 70-200GM II .
Tamron is not bad at it but it lags behind native Sonys a bit...
This doesn’t sound right at all. I assume your AF was on "human" and the eye AF was engaged?
A few days ago, I took a series of pictures of a medium sized dog running really fast, almost flying, straight at me, using the Tamron 35-150 on A1, shooting at 15 fps. At least two-thirds of the pictures were in focus, that I accept as a very satisfactory performance for a 3rd party lens on a subject moving very rapidly toward the camera (yes, the 70-200 GM II, could do much better).
Your experience might be due to the lens more likely than due to a camera fault. If you have another lens available, preferably one with a proven ability to focus fast, you may want to repeat the test, to definitively rule out the camera as a source of the problems.
Jerky_san wrote:
So ran this same test three this time paying attention to the shutter rates and other things a lot more and attempting to remove me from the equation threw it on auto and let the camera figure its thing out. ISO was very low(around 100) shutter speed varies slightly but most around 1/800. It's literally a very bright clear day out so should have no issues. I know I should probably do a mechanical shutter for this test but frankly, I bought an A1 to use the electronic so electronic shutter..
First Test The kid is in the center of the frame jogging at the camera while I pull back the zoom. Out of 10 pictures non were what I would term "sharp", 4 were good if you didn't pixel peep, and 6 were bad. Like totally out of focus. AF-C wide
Second test no pulling back zoom.. just taking pictures as said kid runs at the camera. 35mm when they are out far away it's not as sharp and as they get closer the sharpness improves dramatically till they are basically a foot or two away. AF-C wide
Third test no pulling back zoom.. just taking pictures as said kid runs at the camera. 150mm sharp starting out. As they get closer it becomes less sharp. Only 1 picture out of all of these wasn't clear. AF-C wide
I'm fairly certain there wasn't any camera shake in these.. I took them on my knees and generally held my breath to ensure even my breathing movement wouldn't affect the camera. I need to get my tripod out but just don't have a lot of time. Honestly though feels like the autofocus on the lens just can't keep up. I wish I had more lens to test with but I've not got them ordered yet. If I'm being brutally honest if the Tamron 35-150 goes on sale again at Amazon this is going back. It honestly might just go back anyways and I pay full price for the Tamron. If the subjects are still it does take very good pictures. My wife captured some very nice ones of my kid's when we were taking a walk with my father's dog. All of them were still though. The ones where she tried to capture my son moving were not clear. Hence why I started these tests to see if it was something she was doing or not. Though she is experienced in taking pictures.. Honestly probably more than me. She just doesn't have the time to mess with things these days.
Btw probably expecting to much out of this lens tbh but just guess wanted to post my findings.
If you're wondering why I don't post the pictures I don't feel comfortable posting pictures of my kids online. Sorry.. If I can find a subject(like my dad's dog ) to test with I'll post them up....Show more →
ruthenium wrote:
This doesn’t sound right at all. I assume your AF was on "human" and the eye AF was engaged?
A few days ago, I took a series of pictures of a medium sized dog running really fast, almost flying, straight at me, using the Tamron 35-150 on A1, shooting at 15 fps. At least two-thirds of the pictures were in focus, that I accept as a very satisfactory performance for a 3rd party lens on a subject moving very rapidly toward the camera (yes, the 70-200 GM II, could do much better).
Your experience might be due to the lens more likely than due to a camera fault. If you have another lens available, preferably one with a proven ability to focus fast, you may want to repeat the test, to definitively rule out the camera as a source of the problems.
Yes to the af and human but keep in mind I'm using a Samyang not the Tamron. I'm thinking of sending the Samyang back and just biting the expensive Tamron bullet.
Jerky_san wrote:
Yes to the af and human but keep in mind I'm using a Samyang not the Tamron. I'm thinking of sending the Samyang back and just biting the expensive Tamron bullet.
I can only add your AF results reflect mine when it comes to tracking on those new SY "linear" motors. I'm playing around with SY85/14 AF II, which I think has the same motors as SY35-150, and surprisingly they seem to track worse than my old stepper Sigma 85/1.4 DN (SY is a bit faster though).
j4nu wrote:
I can only add your AF results reflect mine when it comes to tracking on those new SY "linear" motors. I'm playing around with SY85/14 AF II, which I think has the same motors as SY35-150, and surprisingly they seem to track worse than my old stepper Sigma 85/1.4 DN (SY is a bit faster though).
If you figure anything out tell me, please. So far I can't seem to get it to do right and it seems it's just slow at auto focus tbh.
I have a SY 50mm AF II and it has similar AF issues with fast moving subjects. The optics on my second copy are excellent, but the AF with fast moving children, etc is not great. Works fine for slower moving subjects.
dwh1312 wrote:
I have a SY 50mm AF II and it has similar AF issues with fast moving subjects. The optics on my second copy are excellent, but the AF with fast moving children, etc is not great. Works fine for slower moving subjects.
I assume the tamron with it's "linear" af is much better?
Jerky_san wrote:
I assume the tamron with it's "linear" af is much better?
i don't know about "much" better, but yes, because it's a true linear voice coil af motor.
what samyang calls "linear" starts out as a crappy stepper motor, that has to convert circular rotation from the stepper motor into a back-and-forth movement that drives the lens elements in a linear fashion.
they do that with the gear-driven slide arrangement you see in this photo... it's inaccurate and sloppy, and of course there will be wear on the gears, so the performance will continue to deteriorate as you use the lens.
the second photo is of a now-obsolete tamron stepper motor, in a lens that they are selling to nikon, where it's severely marked up... you can see the gear drive better; tamron now uses true linear voice coil af motors.
osv2 wrote:
what samyang calls "linear" starts out as a crappy stepper motor,
I don't understand why they did it? I have the Samyang 85/F1.4 first version that supposed to be the only Samyang with the true linear motor and the AF is ok (still a little bit worse than Tamron). After reading all the user reviews I'll rather go for the Tamron (I have 15 percent discount), as the copy variation seems to be bad and AF use the slow motors.
I am not happy by that, I own 85/F1.4 and 135/F1.8, both are very good, but it seems as the 35-150 zoom is too complex for the rather poor Samyang quality control.
Puppy2022 wrote:
I don't understand why they did it? I have the Samyang 85/F1.4 first version that supposed to be the only Samyang with the true linear motor and the AF is ok (still a little bit worse than Tamron). After reading all the user reviews I'll rather go for the Tamron (I have 15 percent discount), as the copy variation seems to be bad and AF use the slow motors.
I am not happy by that, I own 85/F1.4 and 135/F1.8, both are very good, but it seems as the 35-150 zoom is too complex for the rather poor Samyang quality control.
#_# yeah.. it's my first samyang lens and I was hoping for a game changer given some of the videos I watched but guess I was hoping for too much or something. Just to ask is the 15% off open to everyone or some sort of employee discount? (assuming it's not open to everyone but figured I'd ask)..
Jerky_san wrote:
Just to ask is the 15% off open to everyone or some sort of employee discount? (assuming it's not open to everyone but figured I'd ask)..
It is a limited offer of local photo gear shop for people who attend their promo events.
Puppy2022 wrote:
It is a limited offer of local photo gear shop for people who attend their promo events.
Doh.. well was worth asking lol.. I do see they have edu discounts.. and seems like they will allow teachers to buy it. I bet I could go that route. Won't be 15% but hey.. discount is a discount..
Puppy2022 wrote:
I don't understand why they did it? I have the Samyang 85/F1.4 first version that supposed to be the only Samyang with the true linear motor and the AF is ok (still a little bit worse than Tamron).
My theory is that they got good results from using their current motors in the tiny series and it's cheaper to stick to 1 motor type when it comes to R&D / improving software, even though going with the linear motor from the 85mm would have been a better choice for the larger lenses. I owned it both on Canon RF and then on Sony after I switched, and it was the most reliable/accurate results I've had with their lenses, whereas on every other model of theirs I had fewer keepers in more difficult situations compared to Tamron and Sigma.
Did original SY85/1.4 AF really have linear motor? I compared it to 85DN (stepper) at the time and it didn't seem more precise or faster...
Hmm, according to Samyang it did:
Fast and efficient autofocus with DLSM Technology
DLSM (Dual Linear Sonic Motor) works with ultrasonic vibrations, which cannot be heard by human ears, to successfully give a silent autofocus performance. The accurate high frequency signals, controlled with Samyang’s own protocols, precisely operate the DLSM. Specialists in optics, mechanical engineering, and electronics, have researched cooperatively to give these powerful results for a short telephoto lens. The introduction of DLSM technology on an 85mm lens means you can comfortably and silently capture the subjects you want, with quick efficiency.
I'm sending mine back for a refund soon. Going to just get the Tamron as the AF speed just isn't there. I regret not buying the Tamron when it was 300$ off on Amazon but honestly, a lens isn't worth anything if it misses the shot. The creep is back though not nearly as bad but it's mostly about the AF at this point and it missing shots constantly or not being as sharp as I'd expect.
Btw
&lc=Ugw2fTWvRXkARDzENqJ4AaABAg <- found this over the weekend..
Jerky_san wrote:
I'm sending mine back for a refund soon. Going to just get the Tamron as the AF speed just isn't there. I regret not buying the Tamron when it was 300$ off on Amazon but honestly, a lens isn't worth anything if it misses the shot. The creep is back though not nearly as bad but it's mostly about the AF at this point and it missing shots constantly or not being as sharp as I'd expect.
Btw
&lc=Ugw2fTWvRXkARDzENqJ4AaABAg <- found this over the weekend..
That looks similar to some short clips I recorded on SY85II. I'd say there is some hope left as SY is known to release multiple fw updates for their lenses...
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