March 30, 2015, 10:43:33 AM

Author Topic: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination  (Read 6420 times)

donn

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #15 on: February 15, 2015, 08:23:16 AM »
I've got a new video where I interactively look closely at the resolution at major apertures (f/2.8, 4, 5.6, 8, and 11) in a direct comparison between the new Tamron, the Samyang/Rokinon 14mm f/2.8, and the Tamron 24-70mm f/2.8 VC on the wide end.  The results are pretty amazing.

Take a look:  http://bit.ly/1Aac03H

Nice video. The tamron seemed to perform very well!

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #15 on: February 15, 2015, 08:23:16 AM »

old-pr-pix

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #16 on: February 15, 2015, 08:53:04 AM »
Wow!  40 below - was that degrees C or F?  (Oh wait, it doesn't matter!)  It's only -7F here today with wind chill around -25F.  I probably won't be out shooting.  In film days I used to do shots like that often; but, now I prefer to follow the manufacturer's recommendation on camera operating temperatures - I stay warmer that way.  Any issues with your 6D at those temperatures?

Great Sunday morning inspiration however.  And, the lens looks interesting as well.  Looking forward to full review.  Thanks.
Lots of Canon stuff -- FD, EF, EF-L, EF-S.  Olympus stuff too

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #17 on: February 15, 2015, 09:49:49 AM »
Wow!  40 below - was that degrees C or F?  (Oh wait, it doesn't matter!)  It's only -7F here today with wind chill around -25F.  I probably won't be out shooting.  In film days I used to do shots like that often; but, now I prefer to follow the manufacturer's recommendation on camera operating temperatures - I stay warmer that way.  Any issues with your 6D at those temperatures?

Great Sunday morning inspiration however.  And, the lens looks interesting as well.  Looking forward to full review.  Thanks.

My 6D has never balked at me in any kind of weather conditions.  It really is an excellent camera.
6D x 2 | EOS-M w/22mm f/2 + 18-55 STM + EF Adapter| Rokinon 14mm f/2.8 | Tamron 24-70 f/2.8 VC | 35mm f/2 IS | 40mm f/2.8 | 100L | 135L | 70-300L -----OLD SCHOOL----- SMC Takumar 28mm f/3.5, Super Takumar 35mm f/3.5, SMC Takumar 55mm f/1.8, Helios 44-2 and 44-4, Super Takumar 150mm f/4

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #18 on: February 16, 2015, 09:09:40 AM »
Finally got a peak at the sky last night.  So cold, though, that I didn't linger too long and wasn't in the best of conditions.  Still, I'm pretty impressed with the low coma and the very nice performance for a night sky shot.  I've processed this to make up for the light pollution and allow the stars to shine, but I would say this lens is probably doing as well as the Rokinon other than not having as dramatically wide a field of view.

Frozen Stars - Tamron 15-30 VC by Thousand Word Images by Dustin Abbott, on Flickr

I've got a few more that I will share shortly.  The specs:  ISO 1600, f/3.2, 15 seconds.  The aperture wasn't to add sharpness so much as trying to get the exposure I wanted.
6D x 2 | EOS-M w/22mm f/2 + 18-55 STM + EF Adapter| Rokinon 14mm f/2.8 | Tamron 24-70 f/2.8 VC | 35mm f/2 IS | 40mm f/2.8 | 100L | 135L | 70-300L -----OLD SCHOOL----- SMC Takumar 28mm f/3.5, Super Takumar 35mm f/3.5, SMC Takumar 55mm f/1.8, Helios 44-2 and 44-4, Super Takumar 150mm f/4

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #19 on: February 16, 2015, 09:17:19 AM »
I went into my catalog and compared some nightscapes from the Rokinon and the 16-35 f/4.  The Tamron has less distortion towards the edges, and that caused more stretching on the Rokinon.  The performance from that Tamron is good enough that I feel I could let the Rokinon go in favor of the Tamron and not lose anything.

The 16-35 f/4L was simply not as good for astraphotography, in my opinion. I never got the starpoints to render as sharply, and, of course, you have only half the available light to work with.

One big plus is that the focus window is accurate on the Tamron.  I just put it on infinity before going out to shoot and got a very sharp result. 
6D x 2 | EOS-M w/22mm f/2 + 18-55 STM + EF Adapter| Rokinon 14mm f/2.8 | Tamron 24-70 f/2.8 VC | 35mm f/2 IS | 40mm f/2.8 | 100L | 135L | 70-300L -----OLD SCHOOL----- SMC Takumar 28mm f/3.5, Super Takumar 35mm f/3.5, SMC Takumar 55mm f/1.8, Helios 44-2 and 44-4, Super Takumar 150mm f/4

BeenThere

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #20 on: February 16, 2015, 09:44:08 AM »
Thanks for doing this. When you add a few more, as mentioned, a corner crop in the star field would be really helpful. Thanks again, I always enjoy your reviews.

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #21 on: February 17, 2015, 09:52:52 AM »
Here's a wide open one for you to peep at a bit here.  I've processed it a bit to help the stars pop (and to try to deal with the light pollution everywhere), so at a pixel level there is some extra noise, but it will also make it very easy to check for coma and determine whether it is acceptable for your purposes.

I'm working on the final review right now.  The video review is already done and uploaded, but it is still unlisted until I am ready to go live with everything else.

6D x 2 | EOS-M w/22mm f/2 + 18-55 STM + EF Adapter| Rokinon 14mm f/2.8 | Tamron 24-70 f/2.8 VC | 35mm f/2 IS | 40mm f/2.8 | 100L | 135L | 70-300L -----OLD SCHOOL----- SMC Takumar 28mm f/3.5, Super Takumar 35mm f/3.5, SMC Takumar 55mm f/1.8, Helios 44-2 and 44-4, Super Takumar 150mm f/4

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #21 on: February 17, 2015, 09:52:52 AM »

andrewflo

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #22 on: February 17, 2015, 06:06:09 PM »
Very cool thanks Dustin.
6D | 70-200 ƒ/2.8L IS II | TAMRON 24-70 | 100L IS | SIGMA 15mm ƒ/2.8 Fisheye | 50 ƒ/1.8 II | EOS M | EF-M 22 | EF-M 18-55

Djaaf

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #23 on: February 18, 2015, 04:20:13 AM »
Very nice Dustin.
It seems like there's a bit of decentering, but it's barely noticeable (top left corner is a bit worse than top right corner). And the coma seem to be on par with the Samyang 14mm, which is quite the achievement.

I'll have to see it with my own eyes to see if the size will really be an issue or not, but right now, i'm awfully tempted. :D

Djaaf.
Canon EOS 6D, 24-105 f/4 L, 100 Macro L IS, Voigtlander 20 f/3.5, Samyang 14 f/2.8

TWI by Dustin Abbott

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #24 on: February 18, 2015, 09:31:41 AM »
Very nice Dustin.
It seems like there's a bit of decentering, but it's barely noticeable (top left corner is a bit worse than top right corner). And the coma seem to be on par with the Samyang 14mm, which is quite the achievement.

I'll have to see it with my own eyes to see if the size will really be an issue or not, but right now, i'm awfully tempted. :D

Djaaf.

I don't know if you have seen the Nikon 14-24mm, but it is just marginally larger than that.  Weight wise it falls right between a 24-70 f/2.8 (840g) and 70-200 f/2.8 (1470g); it is 1100g.
6D x 2 | EOS-M w/22mm f/2 + 18-55 STM + EF Adapter| Rokinon 14mm f/2.8 | Tamron 24-70 f/2.8 VC | 35mm f/2 IS | 40mm f/2.8 | 100L | 135L | 70-300L -----OLD SCHOOL----- SMC Takumar 28mm f/3.5, Super Takumar 35mm f/3.5, SMC Takumar 55mm f/1.8, Helios 44-2 and 44-4, Super Takumar 150mm f/4

Rommel

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #25 on: February 26, 2015, 04:50:27 PM »




All at F2.8 on 5D Mk3 and 15mm

wanderer

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #26 on: March 09, 2015, 10:21:09 AM »
Rommel, could you please post RAW files of these photos. Or at least 100% crops. Thanks  :)

mackguyver

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #27 on: March 09, 2015, 10:39:41 AM »
Have you guys seen this from DPReview - it mirrors Dustin's observations:
Prepare to be impressed: Tamron 15-30 F2.8 vs. Nikon 14-24 F2.8

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #27 on: March 09, 2015, 10:39:41 AM »

TWI by Dustin Abbott

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #28 on: March 09, 2015, 11:36:51 AM »
Have you guys seen this from DPReview - it mirrors Dustin's observations:
Prepare to be impressed: Tamron 15-30 F2.8 vs. Nikon 14-24 F2.8

Thanks for sharing.  That was very interesting.  I've got another copy coming in a couple of weeks so that I can do the direct comparison with the Canon 16-35 f/4L (and maybe f/2.8L, too).
6D x 2 | EOS-M w/22mm f/2 + 18-55 STM + EF Adapter| Rokinon 14mm f/2.8 | Tamron 24-70 f/2.8 VC | 35mm f/2 IS | 40mm f/2.8 | 100L | 135L | 70-300L -----OLD SCHOOL----- SMC Takumar 28mm f/3.5, Super Takumar 35mm f/3.5, SMC Takumar 55mm f/1.8, Helios 44-2 and 44-4, Super Takumar 150mm f/4

BeenThere

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #29 on: March 29, 2015, 03:37:21 PM »
Based to a large extent on Dustin's early review I purchased the new Tamron.  One of my interests is night photography and the night shots from Dustin's review looked promising. I was specifically interested in the Coma performance wide open and did some comparisons with a few other wide angle lenses to see how the new Tamron faired. Bottom line was that it did very well in the comparisons. Perhaps my new favorite starry night lens. My results are posted here:

   http://www.ronbrunsvold.com/tools/wide-angle-lenses-for-night.html

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Re: Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination
« Reply #29 on: March 29, 2015, 03:37:21 PM »