135mm + 1.4 extender _VS_ 70-200mm f/2.8 IS mkI

the 135L isn't the sharpest partner for a 1.4x TC:

http://the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=108&Camera=453&Sample=0&FLI=3&API=1&LensComp=687&CameraComp=453&SampleComp=0&FLIComp=3&APIComp=0

The 1.4x TC is a much cheaper (and lighter) option than the 70-200 II, but if you can afford it and don't mind the weight, the 70-200 II really is something else.
Upvote 0

B+W UV filter XS Pro broken by Canon 17-40L lens cap

Hello,

I read some discussions about UV / clear filters for the 17-40L and wanted to share my experience.

I recently purchased 5DIII + 17-40L + B+W Filter UV (010) XS Pro Digital MRC Nano D77mm.

Yes, though it's a slim filter you CAN still attach the original Canon lens cap provided with the 17-40L. But the lens cap does NOT fit completely. The front thread is not deep enough.

So there was a problem : the DSLR is stocked all day in a top loader bag, pointing down. And there was a pressure on the lens cap due to body + lens weight. 3 days ago, I found the filter completely broken. And I could CLEARLY see that the starting point of the broken zone is on the border where the lens cap pushed...

Now, I'll buy a F-Pro mount...

Just to share my experience...

Cheers,

Sigma 35MM F/1.4 DG HSM Worth the price

Mikael Risedal said:
I'm waiting for the Sigma lens and test it out on a d800, Im going on a long work trip in Vietnam,Kambodja and Laos in march and decided to have Nikon gears with me this time instead of Canon. First time since 2006 I will rely on Nikon and maybe also a Sigma 35mm. Compared to Nikon 35/1,4 and Canon 35/1, 4, all tests looks stunning good so far .

I think you will be impressed by the Sigma. I haven't found a weakness yet. It's sharp across the frame at all aperatures, fast and accurate AF and I haven't even gotten it to flare so far. I think the bokeh issue is silly and subjective. Is March the rainy season? I mention this because the fit and finish of the lens makes it appear to be weather sealed, but, for some reason sigma didn't put a gasket at the lens mount...
Upvote 0

Glacier National Park - New lens?

FatDaddyJones said:
Diverman said:
I will definitely bring a CP with me, as well as a ND.

A neutral density filter is what I forgot the last time I went to a national park... Yellowstone, in my case. NDs are a must for taking proper exposures of all the awesome waterfalls and rapids, if you want that soft, velvety water look. At glacier, you'll use it a LOT.

Good point, but I kind of stopped using mine. A CP and careful settings seems to do just fine most of the time. Definitely not a bad idea to have one, though. Glacier is, IMHO, a water park at its heart.


-----------

http://michaelhodgesfiction.com/
Upvote 0

Canon 6D review

michaelstringer said:
I think you may have misread my review (or I wasn't very clear). The 5D IIIs AF is excellent and fast in all situations - including low light. Very low light is obviously more of a challenge but mostly it locks fine. The 6D however has a slightly better centre point in near darkness - it locks a bit quicker and doesn't seem to hunt at all (yet).

Thanks for the clarification, but it was actually others in this thread that were complaining about the 5D3's low light focusing performance. =)
Upvote 0

The grass is greener?

I think I found the lens - the new 24-70mm :)
Incredible base sharpness and the RAW files handle very well to even more sharpening.

This is probably the best lens I've tried to date and the fact it's a zoom amazes me.
I guess I need to see what the 12-24 is like if it is announced next week.

What I HAVE discovered is that only the very newest released lenses seem to bring out the best from the 5D MK3...

ET
Upvote 0

Does a 39.3mp Sensor Exist? [CR1]

LetTheRightLensIn said:
dilbert said:
Many people (including myself) thought that the 5D3 would use 3x3 binning for video.

It doesn't.

Then how come it doesn't have the nasty moire of the 5D2 and 6D?

It is a bit soft, but I'm guessing that is because the AA filter was designed for 1x1 single photosite sizes for stills and doesn't help any for 3x3 blocks so they do a little AA in software to mush away some of the aliasing from that??? Not really sure though.
As a bayer sensor has 2x2 blocks to give the full colour info - one red, one blue and the two green, a 5D mk III 3x3 block downsampled into one video pixel, while better than what could be downsampled from a 21 or 20MP sensor (hence their use of pixel binning), it's not ideal. A multiple of 2x2 is theoretically much better, such as the 39.3MP 4x4 downsample.

I would have guessed some sort of of merging of the resulting pixels occurs in software, probably to do with compensating for the inconsistent colour info across each 3x3 block.
Upvote 0

Filter

Forum statistics

Threads
37,474
Messages
975,177
Members
24,816
Latest member
GLBDD

Gallery statistics

Categories
1
Albums
29
Uploaded media
372
Embedded media
1
Comments
25
Disk usage
1 GB