Exclusive Review of the Tamron
18-400mm F/3.5-6.3 Di II VC HLD
In
recent times Tamron has come to be known well for its zoom-telephoto
lenses. For instance, there was a considerable amount of success that
the Tamron 16-300mm enjoyed before the launch of its successor. TheTamron
18-400mm F/3.5-6.3
Di II VC HLDwas launched recently in India and is the company’s evolution from
the 16-300mm F3.5/5.6.
The
16-300mm had a zoom ratio of 18.8x and with the launch of the new
18-400mm, Tamron has launched the ‘world’s
first ultra-telephoto all-in-one zoom lens that offers a 22.2x Zoom
Ratio’. This means it offers
the best of an Ultra-wide 18mm in a combined body with a 400mm
telephoto option.
The manufacturer has launched this at an extremely affordable price
of Rs. 55,000 and aims to target any enthusiasts who are looking for
one single lens to fulfil all their shooting needs.
The
18-400mm is an APSC lens which means it features a crop factor of
1.6x on a Canon mount and 1.5x on a Nikon mount. This means
effectively it turns to a 29-640mm
zoom lens on the Canon mount which we have used for the review. And
for our readers who don’t follow what this means, then in simple
words when you put this lens on a APSC body then it gets converted
from a 400mm lens, which is its maximum range x 1.6 times on a Canon
body giving us a farthest reach of 640mm. And a focal range of 620mm
on a Nikon body with a 1.5x multiplication.
Look,
Body and Feel
When it
comes to the design, structure and the body of the lens then there
are certain pluses and minus. For the sort of range that the lens
provides it is housed in a very compact structure, and Tamron
deserves much credit for the same. It seems pretty light as compared
to the other telephoto zoom lenses in the same category and also the
everything about the materials used in making the product screams
tough, durable and rich.
It
features a Design that houses 16 elements in 11 groups. The lens is
divided into 3 structures in order to make it light and compact. The
3rdstructure houses the lens when its contracted and on extension the
2ndand the third housing is extended. But while Tamron has used this
technology to make the lens compact it also acts as a small spoiler
for the lens that we received for the review. The lens seems a little
stiff when you are extending and using it in a real-world shooting
scenario and this can pose a major challenge. I regularly found
myself having this issue while zooming into the subject. But in time
with the constant use of the same, it did tend to get slightly
smoother in operation.
The lens is
also weather sealed and comes with a ring lock in order to stop it
from accidentally extending when not in use. A feature that many
photographers/enthusiasts will surely appreciate.



Key
Features
There
are number of key features that the lens provides and they are below:
World’s
first 22.2x Zoom ratio:
The lens is
the world’s first lens to provide a zoom ratio of 22.2x with a max
focal length of 400mm and beats the other options in the same
category which includes popular manufacturers like Canon, Nikon and
Sigma to name a few, all of whom have a 300mm lens in their
portfolio.
Perspective
flattening effect
Another
feature that the lens provides is the Perspective flattening effect.
Under this effect the background tends to draw closer and the effect
appears stronger as the focal length gets longer. This makes the
image look more dramatic, something similar to how the Portrait Mode
on the new iPhones work. Now this isn’t different from any
telephoto lens ideally, but this seems more pronounced with the
Tamron lens.
HLD
Motor
The
18-400mm also features the HLD
(High/Low Torque Modulated Drive) motor developed by Tamron and is
used for AF movement. With less mechanical contact compared to DC
motor, both noise level and reliability are improved in HLD motor
according to the manufacturer. The motor also has also enabled the
company to minimise the size of the lens.
Performance:
In terms of the
performance we checked the lens for the overall image quality, zoom
ratio, chromatic aberration, distortion, flare and ghosting and bokeh
among others.
We shot
subjects at different focal lengths of 50mm, 200mm and 400mm and the
performance of the lens in daylight conditions were very good. As
seen in the sample images, the results are very sharp even on zooming
in at 100% and there doesn’t seem to be much loss of detail. The lens
produces well saturated colours and also doesn’t provide any issue
while Focus Hunting.
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But as good
as the lenses performance is in daytime, it seems to lag slightly in
low-light conditions. There tends to be loss in details in the night
time, but we can’t really hold this against Tamron since most
lenses in such situations are almost the same.

Chromatic
Abbreation:
In
terms of Chromatic Aberration, we ran the images through a
benchmarking software which gave us an output of 3.22 pixels, which
is fairly average for the telephoto lenses in this category.

Distortion:
We
checked the distortion by shooting images at both 18mm as well as
400mm. The images showcased a high amount of distortion. As seen in
these images the building appears to be leaning instead in a straight
line which means it has a high amount of distortion.

Anti-Flare
and Anti-Ghosting:
We
pointed the lens to a light source to check its performance in this
department and the lens performed well in this department displaying
very minimal flare and ghosting. Most lens in such categories display
a high amount of flare and ghosting.

Quality
of Bokeh:
The quality
of bokeh in the lens is pretty good and the reason why this is an
important point is because when you are using a longer focal length
and clicking subjects a good quality bokeh gives you a well-rounded
circle which makes the pictures really stand out.
Conclusion
In
conclusion, there are number of things that the new 18-400mm from
Tamron has going for itself. It delivers excellent performance in
day-light conditions with sharp and detailed images combined with a
decent low-light performance. The images are well saturated with the
lens focusing really fast and the quality of bokehs are good.
But while
it has some great things about itself there are also certain cautions
when it comes to buying this lens. It has an average level of
Chromatic Aberration but a high-level of distortion. And we would’ve
liked that zoom ring to be a lot smoother.
So this
brings us to the question whether you should by this lens or not?
This ideally boils down to the what you are planning to use this lens
for. If you are looking for an all-in-one lens that is a decent
performer, then this is the perfect lens for you.
But if you
are looking for a lens which delivers professional level performance
then this might not be the lens for you. But if you are looking for
that level of performance then be ready to shell out lenses which
might cost nearly 2-3 times the Tamron 18-400mm.
Images and
Text:
Bhavya
Desai