Latest or all posts or last 15, 30, 90 or 180 days.
Upgrade the memory of your 2019 iMac up to 128GB

Tamron SP 15-30mm f/2.8 Di VC USD: Focusing Problems and Lens Skew

Get Tamron SP 15-30mm f/2.8 Di VC USD Lens or Nikon 14-24mm f/2.8G at B&H Photo

Tamron SP 15-30mm f/2.8 Di VC USD

I spent another several hours reshooting some very nice material with vibration control (VC) disabled. I had some high quality material (or so I thought) to compare with the Nikon 14-24.

But the Tamron has delivered focus problems: even though 10X Live View showed crisp focus, the lens somehow delivered focus badly off even as the Nikon 14-24mm remained spot-on (focus shift aside) doing the same darn thing. Multiple instances of errors, not a one-off issue. It’s as if the Tamron lens glitches somehow, and destroys focus. Immensely frustrating. At this point, I’d advise caution on the Tamron, though that’s a weak point: it could just be a bad sample and it looks to have strong optical potential.

At least three scenes show a severe left/right skew in the plane of focus in the 20mm to 24mm range. Maybe it has a loose lens element or some such thing that accounts for both issues.

And so my review of the Tamron SP 15-30mm f/2.8 Di VC USD must be delayed: I’ve requested a replacement sample and that should arrive in mid April (B&H is closed for Passover). No point in testing a bad sample.

As an aside, the Tamron 15-30mm f/2.8 is very much NOT parfocal; the slightest change in zoom throws the focus substantially off.

OWC Thunderblade Thunderbolt 3 SSD
Gen 2!

Blazing fast, 1TB, 2TB, 4TB, 8TB.

Lloyd’s all-time favorite SSD!

√ No more slow and noisy hard drives!
128GB Memory in iMac 5K

Up to 128GB for 2019 iMac 5K!
Up to 64GB for 2015/2017 iMac 5K

Save nearly 50% over Apple pricing

Best Deals, Updated Weekly
B&H Deal ZoneDeals by Brand/Category/Savings
Deals expire in 15 hours unless noted. Certain deals may last longer.
$1089 SAVE $610 = 35.0% $16 FREE ITEMS Canon 18x50 IS Image Stabilized Binocular in All Other Categories
$2797 SAVE $600 = 17.0% $246 FREE ITEMS Nikon Z 7 Mirrorless in Cameras: Mirrorless
$649 SAVE $250 = 27.0% $6 FREE ITEMS Sigma 35mm f/1.4 DG HSM Art in Lenses: Mirrorless
$1329 SAVE $170 = 11.0% ZEISS 18mm f/2.8 Batis in Lenses: Mirrorless
$1169 SAVE $130 = 10.0% ZEISS 25mm f/2 Batis in Lenses: Mirrorless
$1169 SAVE $130 = 10.0% ZEISS 40mm f/2 Batis CF in Lenses: Mirrorless

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.