RSS
 

Posts Tagged ‘F2.5’

The Lomogon 32mm F2.5 lens features perfectly round apertures on a rotating wheel

22 Feb

Lomography has launched the Lomogon 32mm F2.5, a compact lens with full frame sensor coverage and a unique wheel of aperture stops that protrudes from the barrel.

Fitted with the Lomogon Circular Aperture Disk the lens uses a series of five round holes cut into a disk of metal as its aperture control. The toothed disk sticks out from the lens and is turned by the user to drop the desired hole behind the front element – a bit like Waterhouse stops from the 1850s. The holes in this disk correspond to F2.5, F4, F5.6, F8 and F11 – and each is completely round as they aren’t created by an iris.

The Lomogon uses 6 coated elements in 6 groups, has a 62mm filter thread and a closest focus distance of 0.4m. Developed with Russian manufacturer Zenit and built in China, Lomography says the Lomogon uses ‘the finest glass optics’ and is assembled by hand. The result, according to the company, is high micro-contrast and ‘enhanced colors’. It will be available in Nikon F and Canon EF mounts, and adapters can be used for other camera fittings.

Technical Specifications

  • Focal Length: 32 mm
  • Lens Construction: 6 elements in 6 groups
  • Maximum Aperture: f/2.5
  • Regular Apertures: dial aperture stops, f/2.5, f/4, f/5.6, f/8, f/11
  • Image Circle: 44 mm
  • Field of View: 68 degrees
  • Lens Mounting Profile: Canon EF and Nikon F
  • Electronic Contacts: No
  • Closest Focusing Distance: 0.4 m
  • Focusing Mechanism: Helicoid
  • Filter Thread: 62 mm

$ (document).ready(function() { SampleGalleryV2({“containerId”:”embeddedSampleGallery_5983014042″,”galleryId”:”5983014042″,”isEmbeddedWidget”:true,”selectedImageIndex”:0,”isMobile”:false}) });

If all goes well the Lomogon will begin shipping in November 2019 and will have a retail price of $ 499. During the Kickstarter campaign though, it can be had for as little as $ 299.
For more information see the Lomogon Kickstarter page.


Disclaimer: Remember to do your research with any crowdfunding project. DPReview does its best to share only the projects that look legitimate and come from reliable creators, but as with any crowdfunded campaign, there’s always the risk of the product or service never coming to fruition.

Articles: Digital Photography Review (dpreview.com)

 
Comments Off on The Lomogon 32mm F2.5 lens features perfectly round apertures on a rotating wheel

Posted in Uncategorized

 

Voigtlander releases details and price of its 110mm F2.5 Macro APO-Lanthar for Sony E-Mount

03 Jul

Lens manufacturer Cosina has provided more specification for the Macro APO-Lanthar 100mm F2.5 lens that it first announced at CP+ in March. The E-mount lens is due to begin shipping in August 2018, and is quoted on the Japanese website as having a price of ¥148,000 – approximately $ 1350/£1050 before tax.

The new manual focus lens offers 1:1 macro and a closest focusing distance of 35cm. It uses three floating lens groups for focusing to ensure optimal quality at all distances – according the Cosina – and apochromatic correction to produce high resolution and detailed images for the full frame Sony sensors.

With electric contacts the lens can transmit aperture and focusing information to the camera, which will be recorded in the EXIF data of the image as well as being used to inform the 5-axis image stabilization systems of the Sony range. The contacts also allow manual focus assistance to be triggered by turning the focusing ring.

For full specification see the Cosina website.

Manufacturer information

Macro APO-LANTHAR 110mm f/2.5 E-Mount

Voigtländer MACRO APO-LANTHAR 110mm F2.5 is a high performance manual focus 1:1 macro lens optimized for the imaging sensors of Sony mirrorless cameras. Inheriting the APO-LANTHAR designation, the lens is highly corrected to eliminate optical aberrations including longitudinal chromatic aberration. The lens covers the full frame image area, and achieves a maximum image reproduction of 1:1 life size with no additional attachments. In order to ensure subjects from minimum focus distance to infinity are captured with extremely high image quality, a 3-group floating mechanism is employed to adjust three optical groups according to focus distance. The 110mm focal length on full frame format ensures not only a good working distance from subjects for macro shooting, but also its angle of view for portraiture does not look too cropped in comparison with 135mm and 200mm lenses. Another attractive feature is the ability to create images with a strong out-of-focus ‘bokeh’ effect, made possible by the 110mm focal length and F2.5 maximum aperture. This lens is a manual focus and manual aperture design, but also features electrical contacts that enable the lens settings at image capture to be included in the Exif information of the image data. Furthermore, the lens is installed with a distance encoder to enable support for 5-axis image stabilization on bodies with this feature, by providing distance to subject information used to compensate for camera shake. Focus peaking while manual focusing is also supported.

Main Features

  • Full frame Sony E-mount with electrical contacts
  • Apochromatic optical design that eliminates chromatic aberrations
  • Optical design optimized for digital imaging sensors
  • Maintains high image quality at all shooting distances with a 3-group floating mechanism
  • Extremely solid and durable all-metal barrel
  • Manual focus for precise focusing
  • Maximum reproduction ratio of 1:1 at a minimum focus distance of 35 cm

Articles: Digital Photography Review (dpreview.com)

 
Comments Off on Voigtlander releases details and price of its 110mm F2.5 Macro APO-Lanthar for Sony E-Mount

Posted in Uncategorized

 

Writer’s Favorite Lens – Canon 50mm f/2.5 Compact Macro

20 Dec

Canon 50mm f/2.5 Compact Macro

Sometimes, picking a favorite is hard. If you ask me to choose a favorite song or movie, it just can’t be done. Lenses; however, are different beasts. Ask most photographers what their favorite lens is, and you’ll probably get little hesitation before they start gushing and waxing lyrical.

At least that’s how I am, and when it comes to picking my favorite, all you have to do is ask which lens is probably on my camera body right now. That is almost always the Canon 50mm f/2.5 Compact Macro.

This lens is a gem that offers great quality in terms of sharpness, ease of use, durability and versatility, and even though I’ve acquired some fairly serious glass since I bought it 12 years ago, it’s still my go-to lens.

Making the choice

Regarding lens choice, one of the most common things new photographers are told is to start with a 50mm f/1.8, often referred to as “thrifty fifties”. The logic here is more or less irrefutable. These lenses are cheap, reliable, versatile, and their large aperture makes them much faster than anything else in that price range. Their versatility makes them perfect for portraits and most other subjects outside of the extremes such as landscapes, which favor wide-angle lenses, and sports, which favor telephoto lenses.

Boba

When I was starting out, I spent a lot of time photographing things like food, flowers, toys, and other small things with fine details. I had little interest in other types of photography, and no interest in portraiture.
As such, the biggest limitation I got from my kit lenses was the focusing distance. I was forever trying to get closer to my subjects using the long end of kit lenses, and falling short every time.

When it was time to consider upgrading that first lens, research made it clear that neither the thrifty fifty nor the 85mm f/1.8 would do much good towards those aims. On the other hand, a dedicated 100mm macro lens was far out of my price range. Because of all this, I put off upgrading my kit lenses for a long time.

It was only by chance that I eventually found the 50mm Compact Macro while browsing through Canon lenses on a retailer’s site. To be honest, there wasn’t a lot of research involved. I saw the lens, the price, and the focusing distance of nine inches, and I bought it within the week.

Pros and cons

The Canon 50mm Compact Macro is the workhorse of my camera bag and it’s certainly been put through its paces over the past decade. For my purposes, there are no flaws; however, it does have a few qualities that may make it unsuitable for some photographers.

Pro – Build quality

It can’t be helped that the first thing you notice about this lens is the build quality. This is particularly true if your previous experiences are with kit lenses. The solid metal casing makes it feel sturdy and the extra weight feels great in your hand.

It may be worth mentioning that when I did get to use a 50mm f/1.8 a few years ago, I thought that I was being handed a Holga lens. This isn’t in any way an attempt the demean the 50mm f/1.8, but rather as an illustration of how far apart these lenses are in terms of build quality.

Pro – Durability

favourite-lens-canon-50mm-macro-2081

Durability may fall under build quality, but experience makes me feel it’s worth mentioning separately.

This lens has been dropped on concrete, cobble stone, and Tarmac, and it has been in the ocean. It has been in ash storms, torrential rain, hail storms, and there was one terrifying incident where it was left to stew in a half litre puddle of shower gel for a few hours. Despite all of this, this lens has not once shown any performance issues.

Pro – Sharpness

As should be expected from a lens created for the purpose of macro photography, the Canon 50mm f/2.5 Compact Macro cannot be faulted in terms of sharpness. While I’m unable to compare it to the other 50mm offerings from Canon, I can compare it with the excellent 85mm f/1.8 and 70-200 f/4 L IS USM. The differences are almost indistinguishable.

Pro – Large aperture

The compact Macro may have a smaller aperture than Canon’s other 50mm lenses, but it is still a fast lens and works well in all but the dimmest of settings.

In terms of background blur, if you take into account that depth of field is also affected by the distance of the camera from the subject (the closer you are, the shallower the depth of field) you can see that you will achieve a comparable amount of blur to the faster lenses.

Pro – Focusing

Whether it’s in auto focus or manual focus, it’s really hard to find fault with this lens. In normal situations, the auto-focus is fast and accurate. The large aperture of f/2.5 allows for a bright image in the viewfinder, making manual focus easy and quick.

Pro – Focus distance

Uke

With a focusing distance of just nine inches (23cm), you can get extremely close to your subjects. Yes, this may be the sole reason for this lens’ existence, but the versatility this adds is wonderful. For example, you are able to take a close-up of someone’s eye, then move a few steps back and take a normal 50mm portrait seconds later.

Cons

As mentioned, it wasn’t easy to come up with any negative aspects of this lens. There are; however, a few considerations that could mean this may not fit your specific photographic needs.

Con – Weight

At 9.88 ounces (280 grams), the Compact Macro weighs more than twice as much as Canon’s 50mm f/1.8 lens (4.6 ounces/ 130g). If you’re trying to keep your kit bag as light as possible, and the macro functionality isn’t that important, then you may want to consider the alternatives.

Con – Price

While I will attest that this lens offers tremendous value for the money, at $ 299 it is a big jump in price from the 50mm f/1.8 at $ 125. If you’re just starting out, and do not yet know what subjects you’re interested in, or whether or not you will stick with photography for long, it may be worth considering a more wallet friendly option.

Editor’s note: at the time of this article the 50mm f/2.5 Compact Macro lens is listed on Canon’s site as Out of Stock. You may be able to find it used on Amazon.com or go for the even higher priced 60mm f/2.8 Macro at $ 419 USD.

Con – Light

There is a slight downside to the lens’ closest focusing distance. When you’re standing that close to your subject, you and the camera effectively block any light coming from the front. Often, this is easily countered with side lighting techniques, or by using a dedicated macro ring flash, but it can be tricky to overcome at other times.

Con – Magnification

What may be considered as a deal breaker for a lot of photographers is that the 50mm f/2.5 Compact Macro is not a true macro lens. With a magnification ratio of 1:2, it only creates images at half life-size. This can be rectified with a converter that allows for 1:1 magnification.

favourite-lens-canon-50mm-macro-5347

In the end

I know I’ve been gushing quite a bit, but my experiences with this lens have been outstanding, despite the heavy use and torture I put it through. If you’re in a position where you’re deciding to buy a 50mm, and you like the idea of getting really close your subjects, do consider the Canon 50mm f/2.5 Compact Macro. It really is a treat.

googletag.cmd.push(function() {
tablet_slots.push( googletag.defineSlot( “/1005424/_dPSv4_tab-all-article-bottom_(300×250)”, [300, 250], “pb-ad-78623” ).addService( googletag.pubads() ) ); } );

googletag.cmd.push(function() {
mobile_slots.push( googletag.defineSlot( “/1005424/_dPSv4_mob-all-article-bottom_(300×250)”, [300, 250], “pb-ad-78158” ).addService( googletag.pubads() ) ); } );

The post Writer’s Favorite Lens – Canon 50mm f/2.5 Compact Macro by John McIntire appeared first on Digital Photography School.


Digital Photography School

 
Comments Off on Writer’s Favorite Lens – Canon 50mm f/2.5 Compact Macro

Posted in Photography

 

Just Posted! Panasonic GH2 14mm F2.5 preview samples gallery

09 Oct

Just posted: Our Panasonic GH2/14mm F2.5 samples gallery. Panasonic’s latest video-focused Micro Four Thirds camera features an entirely new 18MP multi-aspect-ratio sensor and has been released alongside a 14mm F2.5 pancake lens. We’ve got hold of production examples of both and have taken them out shooting to get a flavor of how they perform with a variety of lighting conditions, subject distances and apertures. Rather than shooting the same scene at all ISO settings, we’ve shot an outdoor scene at ISO 160 to ISO 800 and indoors 1600 to 12,800 to give a more realistic impression of what you can expect in situations you might actually encounter.
News: Digital Photography Review (dpreview.com)

 
Comments Off on Just Posted! Panasonic GH2 14mm F2.5 preview samples gallery

Posted in Uncategorized