March 02, 2015, 07:52:14 AM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - RobertG.

Pages: [1] 2 3 ... 11
1
Canon General / Re: Spartans, What is your profession?
« on: February 28, 2015, 01:00:08 PM »
I work in clinical research, currently as a fulltime clinical research coordinator in a large medical practice. Beforehand I worked in contract reseach organizations and pharma companies. Photography is just one of too many hobbies.

2
Black & White / Re: Black and White Landscapes!
« on: February 23, 2015, 07:17:31 PM »
A misty morning in Pai, Thailand

3
Landscape / Re: Telephoto landscapes / seascapes
« on: February 23, 2015, 07:07:57 PM »
Taken with the EF 70-300mm L at 214mm

4
EOS Bodies / Re: Canon EOS 5DS & EOS 5DS R Press Release
« on: February 07, 2015, 10:12:30 PM »
I will be waiting to see what the A7R II looks like. It's hard to beat that Sony sensor, so I wish Canon would have joined them with the 50 mp sensor. I love Canon cameras, but I am not a fan of their sensors.

+1! Couldn't have said it better.

5
I'm just wondering if English Heritage would like some pictures of a pretty, scantily clad maiden suspended in ropes in front of one of their castles ? Hmmm, sounds quite kinky, I'm beginning to warm to the idea. Maybe I should try it at home first.........

Thank you. I had a pretty good laugh. It helped a lot to recover from this ad. Somehow I can't imagine anyone who can effort such a camera or needs such camera and who would be conviced to buy it after seeing this video.

6
Lenses / Re: 17mm TS-E Barrel Distortion
« on: February 06, 2015, 08:15:15 PM »
OK, maybe I misunderstood what is meant exactly by "barrel distortion". English is not my native tongue. But my example shows that there is noticable distortion when full shift is used. Without shift everything is fine. But this is a shift lens.

7
Lenses / Re: 11-24 is here, with images of it compared to Nikon 14-24
« on: February 06, 2015, 08:08:51 PM »
As "privatebydesign" mentioned in his 2nd post, the lens is very useful for all kinds of action shots. It offers a lot of new possibilities.

My focus is on landsape shots. I shoot wide angles pretty often but I stitch these shots to avoid distortion of the perpective. See http://www.magezinepublishing.com/equipment/images/equipment/EF-1124-f4L-USM-5715/highres/Canon-EF-11-24mm-at-11mm-Wide-037A9220-resized_1423140098.jpg and compare the tree in the middle to the 3 trees on the right side. The bend in a lot. Maybe I'm the only one, but I prefer all elements within the frame to be as straight as they were in reality. I also like landscape shots to be equally sharp from edge to edge.

It is an interesting lens but for me it's use would be more limited than my TS-E 17mm and TS-E 24mm. For seascapes it would be pretty useful because stitching doesn't work well with waves. But the lack of a filter thread for the use of grad nd filters or even pol filters is one major reason to wait a while. Let's hope that LEE, Wonderpano etc. come out fast with an adapter.

8
Lenses / Re: 17mm TS-E Barrel Distortion
« on: February 06, 2015, 07:35:38 PM »
For a reference see the horizon above the lake. The cam was leveled. No correction of the horizon was done in post. The attachment in my first post is not a crop. It is the whole picture taken with the TS-E 17mm as it came out of cam. I just reduced the size to 800 x 533 to fit it into the attachment. I'm too lazy to upload it to my server.

The final image was taken with the TS-E 24mm in portrait orientation. 26 shots were stitched with Kolor Autopano  (Exif data: Kolor stitching | 26 pictures | Size: 11514 x 5757 | FOV: 89.90 x 41.51 ~ 9.90 | RMS: 1.88 | Lens: Standard | Projection: Cylindrical | Color: LDR ). It should be a refence to show how the forest on the right side of the attached ouf of cam JPEG should actually look like.

9
Lenses / Re: 17mm TS-E Barrel Distortion
« on: February 06, 2015, 07:21:16 PM »
Without shift I didn't notice any barrel distortion. With maximum shift of 12mm barrel distortion is easily noticable as well as a lack of sharpness and resolution. Of course there is strong vignetting too.

See the attached out of cam JPEG as an example. The file was just reduced to 800 x 55 pixel. Full 12mm of shift was used and the lens was shifted to the right. It was a test shot, after my panorama shot was done.

The final picture taken with the TS-E 24mm in portrait orientation and later on stitched looks like this:


All shots were with the TS-E 17mm (attachment) and the TS-E 24 were taken with a tripod. Just the cam was moved on a panorama plate.

10
Lenses / Re: CPN: David Noton on the new EF11-24mm lens
« on: February 06, 2015, 07:10:02 PM »
It's an interesting article. A landscape photographer who doesn't even mention once the word "filter". The new zoom lens doesn't accept any kind of filter. Maybe I'm old-fashioned and with the improved DR of the new Canon sensors you can fix all blown out skies later on. Oh wait, they didn't improve DR in 8 years or so...

I'll stick to my TS-E lenses - all of them offer shift and the use of filters. I can't remember a landscape shot in the daytime in the last couple of years where the use of filter(s) or shift for perspective correction or both would not have helped to improve the shot. But maybe I'm biased because of the available equipment at hand.


11
Lenses / Re: Is 2015 the real Year of the Lens?
« on: February 06, 2015, 06:25:49 PM »
I'm still waiting for an updated TS-E 45mm lens. Or at least a decent update to the EF 50mm f1.4. I guess none of them will come... after more than 20 years.

12
EOS Bodies / Re: Who is going to buy the new 5Ds's?
« on: February 06, 2015, 05:58:24 PM »
I just read Brian's update over at TDP and he has a lot of detail from Chuck Westfall.  One cool thing I learned is that the 5Ds has the Auto ISO exposure compensation in M mode just like the 1D X.  That along with some of the new 7DII features seems like there are a lot of little goodies to go along with the new body.  I think I'll be trading in my 5DIII for one as soon as they're available.
My disappointment is fading a bit, so I have started to look for things to be happy about. And there are some.

A couple of important ones to me are having support for a high precision focusing screen for manual focus and spot metering following the AF point. Anyone seen anything about that?

See http://www.usa.canon.com/cusa/professional/products/professional_cameras/digital_slr_cameras/eos_5ds#Specifications

"Focusing Screen
Fixed"

"•AF point-linked spot metering not provided"

13
EOS Bodies / Re: Bingo! New Canon 5Ds has 50.6 MP new rumored specs
« on: February 06, 2015, 05:24:49 PM »
All I wanted was Sony/Nikon like dynamic range, great color, clean low ISO's.
Looks like we aren't getting that and a release 4+ months away! - pretty typical Canon.
Pretty disappointed, I thought they were finally coming around, but not very surprised after all.

I'm getting a Sony a7r for the time being for my TS-Es and see what happens.
I will most likely be getting that 11-24 though if its as good as it looks.

+1!

14
EOS Bodies / Re: DPReview Interview with Chuck Westfall of Canon USA
« on: February 06, 2015, 05:04:55 PM »
I'm disappointed. It all sounds like this new sensor is a full frame version of the 70D / 7D II sensor. Same DR as my 5D II but even slightly worse low ISO noise. All for the sake of 50 MP :(
Let's hope for the 5D IV. But first I will wait for an updated Sony A7R for my landscape shots. The Pentax 645Z is too bulky, unfortunately too expensive and lacks the great TS-E lenses...

15
EOS Bodies / Re: Who is going to buy the new 5Ds's?
« on: February 04, 2015, 03:36:05 PM »
I'm interested in the 5Ds. But all I want is a significant improved tonal range, DR and low ISO performance. Ideally it should be equal or even better than the Pentax 645Z. I'll also wait for the new Sony A7R II before deciding which new camera to buy.

Pages: [1] 2 3 ... 11