December 22, 2014, 12:49:58 PM

Author Topic: Canon EF 16-35mm f/4L IS USM  (Read 17500 times)

m8547

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #15 on: July 30, 2014, 08:48:42 PM »
Two Jack Lake

This photo has too much unsharp mask (in my opinion). Notice how the sky gets lighter and the mountains get darker right at the edge? It doesn't actually look like that in real life. If you zoom in past 100% you can see the telltale signs of unsharp mask on the edge (see attached) creating extra contrast at the edge.

It would probably be better to sharpen the original size image, then downsample, then sharpen just a tiny bit more if necessary (depends on the downsampling algorithm). But I don't have the full size image, so I can't try it.

candyman's last image looks kind of similar, but I'm not sure it's too much sharpening. The "&" symbol has a weird glow to it. Maybe it's how the exposure was adjusted to make the scene look natural with the wide dynamic range, or maybe it's HDR?

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #15 on: July 30, 2014, 08:48:42 PM »

dpc

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #16 on: July 30, 2014, 09:57:52 PM »
Two Jack Lake

This photo has too much unsharp mask (in my opinion). Notice how the sky gets lighter and the mountains get darker right at the edge? It doesn't actually look like that in real life. If you zoom in past 100% you can see the telltale signs of unsharp mask on the edge (see attached) creating extra contrast at the edge.

It would probably be better to sharpen the original size image, then downsample, then sharpen just a tiny bit more if necessary (depends on the downsampling algorithm). But I don't have the full size image, so I can't try it.

candyman's last image looks kind of similar, but I'm not sure it's too much sharpening. The "&" symbol has a weird glow to it. Maybe it's how the exposure was adjusted to make the scene look natural with the wide dynamic range, or maybe it's HDR?

Quite right! It was obviously an unfocused attempt to improve an original that probably should have either been left alone or discarded. I'm thinking discarded.

fish_shooter

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #17 on: July 31, 2014, 12:06:10 AM »
And now for an underwater shot done @ 16mm. In the center is a female Pink salmon in the process of excavating her redd (salmon nest). She is assessing her progress in the pic. This is done by probing with her anal fin. Flanking and trailing her in the current are prospective mates. To the right is another female who is guarding her territory in the stream that was within 2 meters. This other female attacked the one in the center a few times while I was shooting.
Tom

candyman

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #18 on: July 31, 2014, 02:04:51 PM »
6D  -  16-35mm f/4 IS  @ 17mm
f/6.3  -  ISO200  -  1/320

candyman

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #19 on: July 31, 2014, 02:16:59 PM »

candyman's last image looks kind of similar, but I'm not sure it's too much sharpening. The "&" symbol has a weird glow to it. Maybe it's how the exposure was adjusted to make the scene look natural with the wide dynamic range, or maybe it's HDR?


Very good spotted: HDR
I may have done a bit too much adjustment but wanted to show a bit of the interior. This shop has an enormous amount of things, little things....
« Last Edit: July 31, 2014, 02:33:55 PM by candyman »

sdsr

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #20 on: July 31, 2014, 04:36:17 PM »
On the off-chance no-one's mentioned this yet, Roger Cicala's test results are now available here:

http://www.lensrentals.com/blog

fish_shooter

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #21 on: July 31, 2014, 05:42:36 PM »
On the off-chance no-one's mentioned this yet, Roger Cicala's test results are now available here:

http://www.lensrentals.com/blog

As well, they have taken one apart:
http://www.lensrentals.com/blog/2014/07/of-course-we-took-one-apart

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #21 on: July 31, 2014, 05:42:36 PM »

dpc

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #22 on: July 31, 2014, 07:00:23 PM »
Flower

dpc

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #23 on: August 02, 2014, 05:58:02 PM »
Abandoned barn in canola field

dpc

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #24 on: August 02, 2014, 05:59:00 PM »
Field of flax

candyman

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #25 on: August 03, 2014, 09:06:26 AM »
Old Europe (sepia)
6D with 16-35mm f/4 IS @ 16mm
f/5.6  -  ISO 200  -  1/60  (M)


mackguyver

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #26 on: August 09, 2014, 08:45:07 PM »
I hadn't noticed the updated photos - great contributions by all of you.  Here's one from this morning - a composite of two photos with some masking to get the digital ND grad effect:

Click

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #27 on: August 09, 2014, 08:48:26 PM »
Lovely shot mackguyver   8)

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #27 on: August 09, 2014, 08:48:26 PM »

dpc

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #28 on: August 09, 2014, 10:36:09 PM »
Not the most exciting of photos, I know, but this is the neighbourhood in which I live. I love this lens.

Jim Saunders

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #29 on: August 11, 2014, 10:40:13 PM »
I've run the numbers and this thread needs a cat.  She looks a bit orange because my obnoxious orange t-shirt reflected some.

Jim
« Last Edit: August 11, 2014, 10:42:47 PM by Jim Saunders »
See what I see: 6500K, 160 cd/m^2, ICC 2, gamma 2.2.

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Re: Canon EF 16-35mm f/4L IS USM
« Reply #29 on: August 11, 2014, 10:40:13 PM »