July 23, 2014, 06:31:43 PM

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 - 3kramd5

Pages: 1 ... 7 8 [9] 10 11 ... 21
121
If you look here:

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=108&Camera=453&Sample=0&FLI=0&API=6&LensComp=108&CameraComp=453&SampleComp=0&FLIComp=0&APIComp=4

it looks like this lens is sharpest around 5.6.  I wouldn't go above F8 unless you really needed the additional DOF.

Good Luck


My 135L is sharpest at F5.0 as per Focal Pro. Is your lens AFMA'd to the body?

For fun you could always try walking up the sync speed too -  it is a function of the camera max sync which was talked about earlier along with the trigger max sync. The worst thing that can happen is you will start to see the banding of the shutter creep into the shot - from there back it off a 1/3 of a stop or so.

I've never had any issues at 1/200s with the 5DIII, so that could help, too.


+1. I shoot my mk3 at 1/200 triggering wirelessly.

I agree with the misfocused theory. It doesn't look like motion blur, it looks like slight back focusing.

122
EOS Bodies / Re: Canon EOS sensors, and technology
« on: April 09, 2014, 01:54:06 PM »
Otherwise more distant future.....I think it maybe a mix of how the Lytro can focus

Doesn't the lytro "focus" mathematically? If you're happy with light field algorithms, why not deconvolving AA filtered images?


"Here is a sample conversation, or reply to my original post... [/snip]"

But your original post comes across as very self-centered and demanding. While that may not have been your intent, it is not inviting of the type of reply you suggest. Rather, people will by and large either move along, or they will argue. And later on, you merely dug yourself a hole by triumphantly citing a non-applicable source.


Sure, it's fun to have a list of dream features. Maybe all I care about is superb OOF rendering, so why not muster my best Arnold accent to demand that canon produce 300mm f/0.7 fixed (round) aperture lenses? Paired with my 58MP 8 color-per-pixel 64-bit sensor, I'm going to get rainbow bokeh like the world has never seen! DO IT NOW!

But really, it seems kinda silly to hope that one company introduces a niche product when there are other companies already serving that niche. Would it be nice to not have to use system 1 for one purpose and system 2 for another? Yah. But is that economically realistic? Not really.  Canon serves a mass market. If they offered a camera without AA filtering, likely many people would unknowingly buy them, and a big upwelling of "my new canon has weird distortion" would ensue online. Nikon has a smaller market and may be less susceptible to people inadvertently purchasing the "E." Sony is frantically trying to get into any market it can. Canon tends to play it safe. Some sports cars allow drivers to disable traction control systems, but I don't think we'd see Hyundai doing that any time soon.

123
PowerShot / Re: Canon EOS Smart 1 Phone - April Fools Joke? :)
« on: March 31, 2014, 10:37:08 AM »
funny stuff.

124
EOS Bodies / Re: EOS-1D X, Dual Back Button AF
« on: March 24, 2014, 03:04:18 PM »
On the 5D3, the DOF preview button is where my right pinky sits naturally, so that works for me. I just wish it were a persistent toggle. It only switches modes while being depressed. It would be far better IMO to have it switch once per press, or alternately to cycle through C modes with that button rather than the dial.

125
EOS Bodies / Re: EOS-1D X, Dual Back Button AF
« on: March 21, 2014, 05:22:17 PM »
I only tend to use DOF preview in live view (manual focus) since the VF isn't really faithful.

126
EOS Bodies / Re: EOS-1D X, Dual Back Button AF
« on: March 21, 2014, 02:53:03 PM »
can the 5D3 do this?  :o
Nope.  Looking at the manual, I think you can set both buttons to start AF, but not to have one do AIServo and the other One-shot AF.

Weird. Though that's a simple firmware thing they could add.

I am accustomed to using the DOF preview button to toggle one shot, but it would be nice for a tactile option (my thumb is here, therefore I am getting one shot) having to visually verify which mode I am in.

127
EOS Bodies - For Video / Re: Understanding Video Autofocus
« on: March 16, 2014, 07:53:19 PM »
i don't own a 5d i own a 1dx so i downloaded the 5d Mk3 manual and on page 228 it explains the issue, i quote below.

Quote
  • The camera cannot autofocus continuously like a camcorder.
  • Autofocusing during movie shooting may momentarily throw the focus far
    off or change the exposure.

I hope that this helps.

Fats

Thanks. My best guess is that it lowers the framerate to allow more time to grab focus. Guess it can't be avoided (well, other than by keeping your thumb off the AF ON button :P)

128
EOS Bodies - For Video / Re: Understanding Video Autofocus
« on: March 16, 2014, 11:27:08 AM »
when you use AF the camera uses contrast detection as it's method to bring the image in to focus.

Now when taking still photos the camera will open the Apature to the widest to get as much light in to the sensor as possible to enable it to find and achieve the focus possible.  Now that is great if the image is a still one but when the camera is shooting video, it can cause problems when filming, the effect for the user is the image goes brighter.  Another item the camera will use to enable it to find focus is the AF assist light that can come on as well to help the camera to find focus.

Except in this case I was already wide open (f/2.8 on an f/2.8 lens), and without a flash installed (5D has no popup). Something else is happening.

129
EOS Bodies - For Video / Re: Understanding Video Autofocus
« on: March 15, 2014, 08:03:49 PM »
What i'm about to say some people will disagree others will agree.

Do not use autofocus when shooting video.

this link will give you the best instructions on how to shoot great video

http://lifehacker.com/5575142/how-to-record-great-video-with-your-hd-dslr-camera

fats



Sure, the few times I've shot video, I focused manually. I understand video AF still lags far behind still AF, but really I am asking why it happens. It seems weird. If would be one thing were I stopped down, but I was shooting wide open. Pressing the AF ON button, the scene brightens dramatically, like more than a stop or two. What causes that to happen?


130
EOS Bodies - For Video / Understanding Video Autofocus
« on: March 15, 2014, 02:22:03 PM »
I rarely shoot video, but was messing around with it today (5D3). I noticed that, if I try to autofocus in video (and probably live view stills too, but I haven't verified), it gets significantly brighter while achieving focus, even if I'm already shooting wide open. What causes that to happen? Does it momentarily drop the frame rate? Can it be avoided? It looks extremely jarring.

Thanks

131
Canon General / Re: $4 Million Photograph
« on: March 03, 2014, 11:08:37 PM »
I don't necessarily think music has gone downhill. Rather, there is just a greater quantity of music, so there is more to sift through.

Just like having 1000 cable channels with 24/7 content necessarily reduces the hit rate of good programming, having a million new musical "artists" every year means good music is harder to find. I suppose the same is true for photography.

132
Canon General / Re: $4 Million Photograph
« on: February 25, 2014, 09:01:40 PM »
.
I know I can't speak for everyone, but I'd hope most folks here would join me in thanking Policar. I appreciate the great insights into photography as art.


Yep. For my dollar (tongue in cheek), this discussion is more interesting than the picture being discussed ;)

Rather than the music analogy, I'll liken it (the print) to another printed medium.

It's hard to freehand a square. You may make something look fairly square, but getting perpendicular corners with straight equal length sides is impossible. A good draftsman likely employs technique that will allow him to get closer to square than I. And size matters. You'll get a better square that's 1mm on the side than one that's 100mm. 1 meter on the side? Forget about it. So, while an expert freehanding a 1m square may have great execution, at the end of the day, he produces a square on a piece of paper. Well done, but patently uninteresting.

Gursky clearly had a concept, and he executed it well (with perhaps the exception of sloppy duplication). However, it's very boring to look at.



And, again, none are that interesting except when printed HUGE.


http://www.its.caltech.edu/~squires/gursky/pics/gursky_chicago.jpg

That one is.

133
Canon General / Re: $4 Million Photograph
« on: February 25, 2014, 11:26:32 AM »
Most people who aren't familiar with the artist don't get the concept. I don't see it and come away with the same feelings of a bleak, sterile god perspective of the world that you do. It may be telling that the photo doesn't speak for itself (I.e. context partially drives your reaction). Or not. I dunno, and it doesn't really matter.

It really does come down to taste. To me, a good photograph need to be interesting to look at. Interest can come from the subject itself or it can come from how a subject is portrayed (composed). The subject is uninteresting, and the composition doesn't add anything to me. Perhaps that is because I don't know what it really looks like and thus can't recognize anything particularly unique about how the scene is portrayed.

Shrug. If someone wants to pay 4million for it, have at it; it's no skin off my back.

134
Canon General / Re: $4 Million Photograph
« on: February 25, 2014, 10:59:09 AM »


I could ask you to describe why Beethoven's 9th is great without using words like "melodious" "beautiful" or discussing texture and composition... Give it a go. You can instantly recognize that it's great, so describe it (don't do any research first, either!) and convince me. Let's say I prefer Wrecking Ball by Miley Cyrus because it has more emotion and lyrics. Convince me otherwise.

Well, I'm not religious, but I certainly recognize the emotions in the lyrical sections of Beethoven's 9th...

Well, there's a convincing argument.  ???

It wasn't meant to be.

I'm just pointing out (in perhaps an obnoxious way) that Beethoven's 9th does in fact have emotionally-charged lyrics (not primarily penned by Beethoven, but the same may the the case for Miley), so it may not be the best sample for your argument.

135
Canon General / Re: $4 Million Photograph
« on: February 25, 2014, 10:30:59 AM »


I could ask you to describe why Beethoven's 9th is great without using words like "melodious" "beautiful" or discussing texture and composition... Give it a go. You can instantly recognize that it's great, so describe it (don't do any research first, either!) and convince me. Let's say I prefer Wrecking Ball by Miley Cyrus because it has more emotion and lyrics. Convince me otherwise.

Well, I'm not religious, but I certainly recognize the emotions in the lyrical sections of Beethoven's 9th...

Pages: 1 ... 7 8 [9] 10 11 ... 21