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Posts Tagged ‘Compared’

Lens reviews update: DxOMark data for 400mm telezooms compared

29 May

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DxOMark has tested two recently-announced announced long telezooms, the Sony 70-400mm F4-5.6 G SSM II and the Nikon AF-S Nikkor 80-400mm f/4.5-5.6G ED VR, as well as the older AF Nikkor 80-400mm f/4.5-5.6D ED VR. As part of our ongoing collaboration we’ve added the test data to our lens comparison widget, and to add a little more context we’ve also included a couple of super-tele primes from Canon. Click through to see how these lenses compare, with links to view the results in our lens widget, and for the full data on DxOMark.

News: Digital Photography Review (dpreview.com)

 
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Sigma’s DP Merrill Cameras Compared – World-Beating Image Quality In Compact Bodies

07 Apr

Sigma, known mainly to photographers for their affordable lenses, recently caused quite a stir among discerning photographers. How? By building three compact cameras around the incredible sensor taken from the SD1, which initially cost $ 10,000. The image quality is simply incredible, and the cameras themselves are small, light and unobtrusive. For photographers seeking the best possible image quality on a budget, they’re unmatched.

Photo1

But there are lots of compromises. Foremost among them is battery life. The small batteries don’t last long so you’ll need to buy spares. Fortunately, they’re cheap. Second compromise; usability. It’s pretty good for a compact camera, and the controls are well laid out for photographers, but there’s some shutter lag, the auto-focus can’t match dSLRs and the huge RAW files take a while to write to the card.

The main compromise we’ll deal with is focal length. Each DP Merrill camera is essentially identical except for the length of the fixed prime lens.

  • The Sigma DP1m has a 19mm lens; equivalent to a 28mm wide-angle on full frame.
  • The Sigma DP2m has a 30mm lens; equivalent to a 45mm standard lens.
  • The Sigma DP3m has a 50mm lens; equivalent to a 75mm short telephoto.

All three lenses have a maximum aperture of f2.8 and a minimum aperture of f16. In my opinion (and not just mine), they are some of the best lenses ever made, including Leica and Zeiss.

In use, being restricted to a single focal length changes the camera entirely. This comparison therefore focusses on which of the Sigma DP series will be right for you. For the cameras themselves, I highly recommend Michael Reichmann’s review at Luminous Landscape.

I’ve used all three cameras for a variety of genres. Now comes time to choose.

Photo2

The Sigma DP1m is very convenient if you want amazing image quality in a tiny package. I was able to take photographs that I otherwise couldn’t have made. This is because it doesn’t look like a serious camera and it’s effectively silent in use. Professional photographers, especially those working where cameras are unwelcome, will appreciate this. Compared to carrying a Nikon pro-body with a wide-angle lens, it’s very much smaller. However, I missed photographs due to the shutter lag and the corners a bit softer than the other two DP cameras.

Photo3

The Sigma DP3m is specialised. I found a 75mm equivalent lens a bit long in use as an everyday camera. However, it is a pocket portrait monster, delivering incredibly sharp files with beautiful bokeh. It’s also got an amazing macro capability which, while not a true 1:1 reproduction, gets close enough for most applications. And there’s no noticeable distortion. The Sigma DP3m really excels when you fuss about and stitch images. 14.85 megapixels is enough for most applications, but if you want to print enormous files, you can increase the image resolution by making mosaics from multiple pictures using software that can stitch panoramas. Because the image quality is so amazing at a 100% level (because it’s not interpolated like a Bayer sensor), the files can be that much better, rivalling medium format cameras worth tens of thousands. For me, this is the niche use the DP Merrill series excels for. I can carry a tiny compact camera, a few cheap batteries and a lightweight CF tripod when I’m doing fine art photography and create the most amazing results.

Photo4

The Sigma DP2m is a bit of a compromise. I’d recommend getting both the Sigma DP1m and the Sigma DP3m; they work very well together as a pair. But if this isn’t an option, the DP2m is your camera. It’s neither too wide-angle nor too telephoto. You can stitch images if you choose as there’s no real distortion, but the standard-lens approach works well for a range of subjects. The important thing is that you get access to that incredible X3 Foveon sensor. Download some Sigma DP Merrill sample images here; they speak for themselves.

Ben Evans teaches Barcelona Photography. Learn the most important things about photography in one hour for (and for less than the price of a lunch) with the best-selling ‘Photography: The Few Things You Need To Know’ Audiobook – www.GreatBigBear.com/Audiobook

Post originally from: Digital Photography Tips.

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Sigma’s DP Merrill Cameras Compared – World-Beating Image Quality In Compact Bodies


Digital Photography School

 
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Canon T3i & T3 Compared To The 60D

16 Jan

TheRecoveringBanker.com | Nic Coventry | The Recovering Banker I’m going to be buying this Canon T3i, hopefully this week, and I’d like to have you check out this video and let me know what you think… The T3 is only 0 bucks, but it only shoots 720p and it doesn’t have the flip out screen. The t3i shoots 18 megapixed pictures, and it also shoots 1080p video. It also has the flipout lcd screen. — Canon has unveiled the Rebel T3i (EOS 600D) upper entry-level DSLR. It continues to use the 18MP CMOS sensor seen in the Rebel T2i (550D) but gains a tilt and swivel 1040k dot LCD monitor like the one offered on the more expensive 60D. It also gains the ability to remotely control flashguns using its internal flash, a feature previously only featured on higher-end models. Alongside the camera, Canon is also launching the 18-55mm F3.5-5.6 IS II, a cosmetically revised version of its optically stabilized kit lens. We’ve had a chance to use pre-production versions of both and have prepared a Hands-On Preview of the EOS 600D including beta samples gallery. Canon announces the launch of the EOS 600D — a compact, lightweight Digital SLR (DSLR) that makes capturing exciting, fun and creative images easier than ever. The perfect choice for aspiring photographers looking for a combination of outstanding image quality and ease-of-use, the EOS 600D sits at the top of Canon’s entry-level EOS line-up, above the existing EOS 550D and the new EOS 1100D. Capturing stunning images and Full
Video Rating: 2 / 5

A few modifications to the GigaPan Epic 100 robotic imager improve its function with large lenses, heavy cameras, and long exposure times. Also, a new battery holder system is described. See gigapans made with this system here: gigapan.org
Video Rating: 5 / 5

 
 

How Bird Wings Work (Compared to Airplane Wings) – Smarter Every Day 62

12 Nov

To learn more click here — bit.ly — To take a DEEP DIVE into how wings work! Click here to tweet DeepDive2 bit.ly I hope you never look at a bird in flight the same way again. I know I won’t! Artist Info: Sarah Xu, a student at the Vancouver Film School made the awesome introduction Drawing. captainpillow.blogspot.ca Gordon, the guy in charge of “Scary Parrot Monsters” at the end of the video wrote this song. It’s called “Black Rhino”… and is available for download online: ashellinthepit.bandcamp.com ~~~~~~~~~~~~~~~~~~~~~~~~~~~ How to get there yourself!: I coordinated the travel with Rainforest Expeditions www.perunature.com Tell them Destin sent you. You can checkout what they do on their Facebook page: www.facebook.com/Rainforest.Expeditions They ran me up and down the river in a boat, gave me lenses, a clean bed, awesome food etc. It was pretty amazing! See the research project’s website here: macawproject.org The project is led by Dr. Don Brightsmith Schubot Exotic Bird Health Center Department of Veterinary Pathobiology College of Veterinary Medicine Jeff Cremer was my hook-up for all things photography once I got on site. He’s very good at technical photography and is more than capable of handling anything you can throw at him. Check out his chops and tell him Destin sent you: bit.ly ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ SMARTER EVERY DAY – DEEP DIVE #2 How Bird Wings Work – Smarter Every Day bit.ly How Wings Work — A reference for creature props bit.ly How do

 
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