Tagged with 18mm - Personal View Talks

18-35mm F1.8 Sigma DC zoom lens

Vitaliy_Kiselev — Thu, 18 Apr 2013 01:53:28 +0000

18-35mm APS-C only
17 elements in 12 groups
Maximum aperture is F1.8
Minimum aperture is F16
72mm filter size
28cm closest focus distance
nine blade rounded diaphragm
Special Low Dispersion (SLD) glass
Internal focusing and zooming
Hyper Sonic Motor (HSM)
Super Multi-Layer Coating
Has AF/MF switch
Size 3.1" x 4.8" , 78x121mm
Weight 28.6oz. , 810g

Vignetting

MTF

Hands on and previews:

PRs

Available at

18-140mm F3.5-5.6 ED VR Nikon zoom lens

Vitaliy_Kiselev — Tue, 06 Aug 2013 01:23:19 +0000

Specs

17 Elements in 13 Groups
Minimum focus - 0.45m
7 blades diaphragm
Minimum aperture F22.0 - F38.0
Silent wave motor
1 aspherical element, one EP element
Filter thread 67 mm
Weight 490 g
$599

A valuable and practical asset for everyday photographers and enthusiasts, Nikon’s newest lens features a 7.8x zoom range that helps capture beautiful images and HD video from a variety of focal lengths. Whether shooting portraits, landscapes, travel or architecture, the 18-140mm offering delivers astounding image quality when shooting wide-angle or far-away telephoto. Equipped with VR image stabilization, the lens also features four stops* of VR image stabilization, helping to ensure sharp photos and video even in low-light situations or while handheld.

The AF-S DX NIKKOR 18-140mm f/3.5-5.6G ED VR lens is built upon core NIKKOR technologies designed to render photos and HD video with the utmost clarity and color reproduction. Constructed with one ED glass element and one aspheric lens element, the 18-140mm lens sports a seven-blade diaphragm for natural image blur and a Silent Wave Motor (SVM) that provides quiet and precise AF operation. Additionally, photographers can operate the lens using one of two focus modes, M/A (AF with manual override) and M (manual) for complete control.

7-14mm Panasonic or 9-18mm Olympus

chocobanana — Mon, 19 Nov 2012 08:00:37 +0000

Hi there,

I'm really interested in a rectilinear Ultra Wide Angle lens for my GH2 but can't decide between these two. I intend to do video and long exposures with it in all conditions (including bright daylight), that's why I'm interested in the ability to fit filters. On the other hand, the idea of going for a wide angle lens is to get that massive perspective, I'm really fond of it for architectural shots.

These two lens seem to be those that offer the widest rectilinear perspectives for the M4/3. I'm not interested in a fish-eye because I would like to shoot 1080p/i without loosing quality after de-fishing. If you aren't already familiar with these two lenses, I would sum up the plus and cons that really matter to me like so:

Panasonic 7-14mm (+ widest reach) (- can't fit filters)

Olympus 9-18mm (+ can fit filters) (- doesn't go as wide)

Price, constant aperture, small quality differences don't really matter to me.

In summary, as far as it goes in terms of what matters to me, what one has the other doesn't. That's why it's so hard to choose for me. Yes, I already researched this comparison thoroughly but never saw it applied particularly to video. Perhaps someone here faced the same dillema and managed to make a decision or could provide a recommendation based on something I'm unable to see here.

Care to comment?

18-105mm F4 PZ OSS E lens

Vitaliy_Kiselev — Sat, 19 Apr 2014 03:39:38 +0000

Specs

16 elements in 12 groups
F4-F22 aperture range
7 aperture blades, circular aperture
0.45-0.95m minimal focusing distance (from wide to tele)
72mm filters
hood included
425g
available for $598 at https://www.amazon.com/Sony-SELP18105G-PZ-18-105mm-OSS/dp/B00ENZRQH8/

http://www.digitbox.fr/test-du-sony-18-105-mm-f4-g-oss-e-pz/

10-18mm F4 Sony lens

Vitaliy_Kiselev — Wed, 12 Sep 2012 01:16:28 +0000

Specifications:

Lens Type : E-mount 10-18mm F4
Aperture : f/4
Aperture (Min.) : f/22
Filter Diameter : 62 mm
Minimum Focus Distance : 9.84" (0.25m)
Aperture Blade : 7 blades (Circular aperture)
Dimensions (Max. Diameter x Length) : 2-7/8 x 2-1/2" (70.0 x 63.5 mm)
Focal Length (35mm equivalent) : 15-27 mm
Lens Construction : 8-10
Lens Weight : 8oz (225g)
Lens-based Image Stabilization (OSS)
Price: $850

Available at:

Samples:

http://www.ephotozine.com/article/sony-nex-e-10-18mm-f-4-oss-lens-sample-photos-20128

18-200mm F3.5-6.3 DC Macro OS HSM Sigma lens

Vitaliy_Kiselev — Sun, 19 Jan 2014 11:44:18 +0000

Specifications:

Designed for APS-C
F22 Min aperture
7 blades
16 elements in 13 groups
Min focus distance - 0.39 m
Ultrasonic motor
Filter - 62mm
430 g

Links

1. Contemporary line that covers a wide range of photography

SIGMA is organizing all its interchangeable lenses into three product lines; Contemporary, Art and Sports. Among the three, the Contemporary line is a high performance line which incorporates the very latest technology making it possible to accommodate both high optical performance and compactness for use in various photography situations. Sigma has solved the difficult problem of keeping the size and weight down without compromising optical performance and function with the latest technology. This lens covers frequently used wide-angle to tele-photo, as well as macro photography.

2. New standard zoom up to 200mm

SIGMA has always been producing a high performance standard zoom lens, dedicated for digital DSLR cameras, that covers up to 200mm by reflecting the latest technology.

In 2005, SIGMA released 18-200mm F3.5-6.3 DC as a smallest and lightest all-rounder lens in class that covers from wide-angle to tele-photo range. SIGMA, in 2007, incorporated OS (Optical Stabilization) functionality, and in 2011, has successfully made the size of the lens even more compact.

Now, this new lens has been redeveloped as the standard zoom lens from SIGMA’s new product line, which has higher performance, is even smaller and lighter-weight, and on top of that, includes “the macro feature”. As an entry level interchangeable lens, it is capable of many photographic scenes.

3. Diameter reduced by 4.6mm compared to its predecessor

We pursued the compactness as an ideal everyday lens. From an early stage of development, SIGMA was determined to make the lens size compact, for example, by incorporating double-sided aspherical lens elements and downsizing the motor. As a result, while the predecessor had a diameter of 75.3mm, this lens has reduced it to 70.7mm, which has the difference of 4.6mm. It also achieves -11% in volume ratio compared to its predecessor. It is one of the smallest in its class of lenses with more than a 7x zoom ratio, and is more comparable in size to a generic standard zoom lenses.

4. High rendering performance throughout the entire zoom range

With our Contemporary line, the lens is required to fulfill the maximum potential while achieving a compact and light-weight construction. This lens incorporates SLD (Special Low Dispersion) glass elements that have a high refractive index, and corrects chromatic aberration at the telephoto-end very well. Moreover, aspherical lens elements, including double-sided aspherical lenses, ensure a compact size and excellent correction of distortion. This also helps to produce superior rendering performance throughout the entire zoom range from wide-angle to tele-photo and macro photography.

5. Close-up photography

One of the biggest features of this lens is that it is possible to shoot subjects as close as Macro lenses. This lens features a minimum focusing distance of 39cm and a maximum magnification ratio of 1:3. It offers the versatility for shooting close-ups of fashion accessories, cuisine, flower arrangements and much more without changing the lens. Its working distance is 14.7cm, and it is suitable for shooing images with natural light as it keeps the shadows of camera and lens off of the image. On its lens barrel, it indicates the maximum shooting magnification at each focal length, and it is so convenient for a photographer that the size of the object in the image sensor becomes easily recognizable. Uncompromising in every aspect of lens design, Sigma has even chosen to engrave the product name on the front of the lens to prevent reflections of the letters during close-up photography.

6. Incorporating new composite TSC

In product development of cameras and lenses, it is crucial to lay out main components, metal parts and polycarbonate, to optimize and ensure each feature. This lens has incorporated TSC (Thermally Stable Composite) that has the same level of thermal shrinkage as aluminum and little elasticity, especially in temperature changes. Since thermal shrinkage is low, it has a high affinity to metal parts that contributes to high precision in product manufacturing. It also results in slimmer mechanical parts, such as the zoom ring and scaling.

18-135mm f/3.5-5.6 IS STM Canon lens

Vitaliy_Kiselev — Fri, 08 Jun 2012 01:50:43 +0000

Minimum focusing distance 0.39m.
IS features about four stops advantage, oriented to video recording.
Circular aperture EMD (Electronic drive aperture)
STM (Stepping Motor) AF, dramatically reduced noise and offers smooth movement.
Designed for cameras equipped with a hybrid AF.

Only camera that can have all advantage from STM is EOS 650D.

MTF

Press releases:

http://www.dpreview.com/news/2012/06/08/Canon-creates-EF-S-18-135mm-F3-5-5-6-IS-STM-EF-40mm-F2-8-STM

Previews and reviews:

Preorders

http://www.adorama.com/CA18135ISR.html