July 29, 2014, 08:18:47 AM

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Messages - Mr Bean

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Lenses / Re: Selling my two Zeiss lenses. Your advice?
« on: July 28, 2014, 06:31:37 PM »
I would keep the 15mm 2.8 which must be PERFECT for astrophotography (if this is your thing of course).
That's partly why I bought one.

For wide angle landscape, I don't see the need of AF. Plus it is wider than the 16-35 IS.
+1. As a landscape lens, manual focus is fine.

The 15mm is a special lens for me. It might only get used once or twice a month, but when I need it for those UWA shots, it does it's stuff really well. And at the risk of being burnt at the stake, AF is a little over rated in a lens if the subject doesn't move (eg: landscape). For me, landscape is all about the sharpness, contrast and colour rendition, which the Zeiss does really well.

Wow, beaut stuff. One of favorite parts of the world. Great to see it portrayed so well :)

Landscape / Re: Stars above.
« on: July 25, 2014, 06:39:20 PM »
Nice pic's KeithBreazeal and Lloyd. Certainly a different view of Old Faithful :)

Landscape / Re: Stars above.
« on: July 25, 2014, 06:36:12 PM »
Beautiful.  Well done Mr Bean
Thanks Click. I must admit, trying to remove light pollution from an image is a tricky thing. Working out what is "normal" colour takes a good eye and the ability to stand back and say "...nope, that's not right....do it again..."  :)

Landscape / Re: Stars above.
« on: July 25, 2014, 10:01:12 AM »
From my backyard the other night. While I'm only an hour or so from Melbourne, the skies are generally fairly clear. I did tweak this in Photoshop by creating a subtraction mask, to reduce the orange glow from the City lights.

Software & Accessories / Re: Tripod centre column - yes or no
« on: July 02, 2014, 08:58:25 PM »
My Gitzo tripod (can't remember the model) has a central column. I rarely use it to extend the height, because, as others have mentioned, stability issues.

However, for macro work, reversing the column and extending the legs out, works a treat. In fact 90% of my macro work is done that way, as I'm usually photographing things low to the ground. My second tripod, when I get around to buying one, will be a more solid unit without the center column, for tele lenses and landscape work.

Horses for courses really.

Animal Kingdom / Re: Show your Bird Portraits
« on: June 29, 2014, 08:43:51 AM »

Coppersmith Barbet,(Megalaima haemacephala), by alabang, on Flickr

The Coppersmith Barbet, Crimson-breasted Barbet or Coppersmith (Megalaima haemacephala), is a bird with crimson forehead and throat which is best known for its metronomic call that has been likened to a coppersmith striking metal with a hammer. It is a resident found in the Indian Subcontinent and parts of Southeast Asia. Like other barbets, they chisel out a hole inside a tree to build their nest. They are mainly fruit eating but will take sometimes insects, especially winged termites.

Source: http://en.wikipedia.org/wiki/Coppersmith_barbet

Location: http://en.wikipedia.org/wiki/University_of_the_Philippines_Diliman

Very nice Dolina. Great capture :)

Animal Kingdom / Re: Show your Bird Portraits
« on: June 27, 2014, 11:39:11 PM »
Mr Bean, lovely shot Sir.
Thanks Click :)

Photography Technique / Re: E-TTL: To use or not?
« on: June 27, 2014, 11:36:04 PM »
In studio, and situations where the photographer can control the people and objects, fully manual flash is desirable. But in events with different lighting in each place that you point the camera, TTL flash gives a much higher percentage of correct answers. In events you better have some slightly dark (or very light) shots that did not make the photo because I was adjusting the flash power all the time.
+1. Most of my outdoors work with flash is done with ETTL. Saves a lot of guess work. Adjusting the flash by a stop or two is about the only "manual" aspect I might use with ETTL.

Animal Kingdom / Re: Show your Bird Portraits
« on: June 26, 2014, 09:03:35 AM »
New Holland Honeyeater feeding in a neighbors grevillea bush. Fast movers that dart about.

Landscape / Re: Deep Sky Astrophotography
« on: June 20, 2014, 08:46:16 AM »
More Cygnus. I really love this region of sky, it's amazing. Tonight I've been getting image time on IC1318, IC1318B which are large nebulous regions, and NGC6910 which is a nice little open cluster nearby. The full frame of the 5D III is JUST AMAZING. It's more than twice as big as the 7D frame, and the images, once processed, are pretty stunning.

This is my first pass at processing a single-frame image of North America and Pelican nebulas in Cygnus, near the top star. Not entirely satisfied with it...I'd like to stretch it more, bring out some more detail, but I need to get a better handle on noise and color correction (a lot of the color correction routines end up making things noisier as they end up nuking most of the green color channel.)

Usually, getting this entire region requires a 4-panel mosaic with the smallish CCD sensors you can usually find for a reasonable price. Only those with the big money can get comparable full frame CCD cameras...which usually cost about $10,000 or more. I've got a cold box in the works for the 5D III, which should help get my dark current levels under control, and help me get better, deeper, less noisy subs (although still not as good as a cooled CCD...my cold box will probably only get me down to around -10°C, where as a good CCD can get you down to -25°C. With dark current doubling/halving every 5.8°C, a CCD is going to be about about 2.6x less noisy (and even better than that, really, as a mono CCD has a higher fill factor, no sparse color spacing, and CCDs designed for astro tend to have lower dark current to start with...)

Beautiful image jrista. What 'scope or lens are you using?

Landscape / Re: Deep Sky Astrophotography
« on: June 20, 2014, 08:43:09 AM »
Can I post stuff here if it wasn't taken with a Canon?  :P  I've been doing astrophotography for a few years now.

These are taken with a 530mm f/5 telescope, and a camera with a KAF-16803 sensor (4096x4096, 9µm pixel).

Wow, stunning. Love the detail :)

What region of the sky?

Street & City / Re: Your best street shots of any kind.
« on: June 14, 2014, 05:40:12 AM »
A singer, a cafe and a full moon. At our local General Store, Friday night.

Canon EF Prime Lenses / Re: Canon EF 100mm f/2.8L Macro IS USM
« on: May 10, 2014, 04:19:53 AM »
Correa Reflexa. A beaut native Australian bush in flower over winter. Great food source for the Eastern Spinebills, Eastern and Crimson Rosellas.

Animal Kingdom / Re: Show your Bird Portraits
« on: May 04, 2014, 08:49:25 AM »
Eastern Spinebill. Winter approaches. The Correas are in flower and the spinebills are back :)

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