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Messages - Drizzt321

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EOS Bodies - For Stills / Re: About Cross Type Focus Points
« on: March 01, 2013, 01:47:06 AM »
Phase detect AF points are actually lines which detect horizontal, vertical or diagonal lines. The normal AF points are generally vertical lines which detects horizontal lines on your subject to determine focus, while the cross-type combines vertical and horizontal AF lines which will detect both horizontal and vertical lines on your subject. The dual-cross points have an additional X shaped lines across the normal horizontal and vertical AF lines, which can help get even better precision.

http://photographylife.com/how-phase-detection-autofocus-works seems to be a decent summary of how Phase detect AF works.

Now Phase detect traditionally cannot be used for AF during Live-View or Video as it requires the mirror to be down to bounce a small bit of light down into the bottom of the mirror box which is where the AF sensor sits. The way it does the Quick AF during Live View is it drops the mirror down briefly, does it's auto-focusing, then pops the mirror back up. Otherwise, during Live View it uses Contrast Detect which is a more accurate, but slower way to get the correct focus. However, you currently can't use that during video recording on Canon DSLRs, excepting the T4i. An advantage of Phase detect over Contrast is that Phase detect can tell you the direction you need to move the focus towards (near or far), while Contrast has to hunt in one direction, and if it doesn't get focus hunts all the way in the opposite direction.

Onto the T4i, that camera happens to have some phase-detect AF sensors put onto it's main sensor, which allows it to use Phase detect to help determine the direction it needs to move the focus in, and Contrast detect to fine tune it and achieve focus. This is likely similar to how the EOS-M does it, since it has the same sensor in it as the T4i.

Now, if we are talking only stills, the Phase detect which is always used when you look through the viewfinder (the mirror is down) or when using Quick Focus in Live-View is generally what is used. It tends to be faster, and usually reasonably accurate. However, if you want extremely accurate, you need to switch to Live View and use the Constrast detect AF. However, this is usually best done from a tripod, unless you have a very large Depth of Focus/Field because hand-held, especially holding it out in front of you to view the Live View, you generally are less steady and have more hand movement. This means you're more likely to move your subject out of focus, especially if it is near to the lens and/or you have a very wide aperture (small f-number).

Lenses / Re: Keep or sell??
« on: February 28, 2013, 06:09:32 PM »
You could always keep it and send me the 135mm f/2L.  ;)

If I could send you one, I would. :) It's so nice. It's really too bad it arrived in winter as I'm dying to get out with it. Soon!!

What's stopping you from getting out and using it? If the snow is 5 feet up over the door and you need to climb out the window to shovel out...alright, I understand. But otherwise? Why not? Winter can be very beautiful!

PowerShot / Re: For DH, need recommendations
« on: February 28, 2013, 03:25:23 PM »
Well, there's the m4/3 cameras, I think there's a new NEX3 that just came out which might be good. I'm not an expert on those, but I know there's a couple which are well regarded. It's a shame the EOS-M doesn't have faster AF, otherwise I'd recommend that. Perhaps when the new version that's rumored to be coming out later this year.

There's also the Canon G series, they tend to be quite good, although without any interchangeable lenses.

Out of curiosity, why does he want an ILC camera? Is it just the idea that he can use different lenses? Or will he _actually_ use a couple of different lenses. Like he wants to do some macro, or go super-telephoto for some birds but still have a normal-range zoom for the rest of the time? Otherwise, I'd just be inclined to say get him one with a good normal-zoom, or even something like the G series which I think goes normal to somewhat telephoto which should be fine for just about anything.

EOS Bodies - For Video / Re: 1D X - Clean HDMI out
« on: February 28, 2013, 12:41:49 PM »
I think the Cinema DSLR line was a bad mistake. They had a revolution with regular DSLR video by now they are cripple city and then $$$$ Cinema DSLR which doesn't make them stand out as much and take over the market.

They had a big surprise when they introduced that, especially on the 5d2. However, it may have started to eat into their higher end video sales, which are both generally higher quality (especially lenses) and more profitable. So they decided they'll charge what the market can bear for a DSLR format video camera, instead of looking a bit closer at the target market and pricing it more like a top end DSLR for the high end of the VSDLR cameras (ala C500). If the C500 was more like $10K-12K, and the C100 was closer to $4k with the rest scaling up in the middle, then they might very well have something.

The Cinema lens prices...there's some extra padding there, but a top quality video lens (no focus breathing among other things) is tough and expensive, so those prices are more in line with other lens prices elsewhere for similar quality.

Third Party Manufacturers / Interesting future ILC concept camera
« on: February 28, 2013, 11:12:47 AM »
Found this from a friend sending it to me, and while the concept video looks intriguing, I'd really need to see it as a real product before even thinking of whether I want one or not, much less how much I'd pay for it.


Third Party Manufacturers / Re: Is this a good deal
« on: February 27, 2013, 08:19:19 PM »
425 is a good deal, especially with 2 lenses. I shot a Pro-S with 6 lenses and 10 backs for quite a while before I went to Hasselblad...

Lenses are cheap - look at KEH.com. I'd also suggest getting a Beattie Brightscreen/Intenscreen for it, makes the world of a difference in being able to see and focus well. I actually preferred the waist level over the prisms, as the prisms are darker, heavier and there just ain't anything like shooting with a waistlevel. FP-100C is beautiful off the 6x7 back. As far as the backs go, I wouldn't worry about light leaks - it's cheap to get them refoamed. Just order some foam strips, sharpen a chopstick and use some alcohol to scrape out the old foam. Then, stick in the new strips and you're done.

The 90mm is the standard length for the view, equiv to a 50mm in small format, 80mm in Hasselblad. The bellows make it nice as you don't need tubes to get closer than normal. HOWEVER, do rack out the focus and check to be sure the bellows aren't crinkled or have pinholes - that'll do more damage than bad foam!

I dragged my RB all over the country, with a 50mm, Sekonic L-327 and Fuji Acros/Provia. Heavy, but with a op-tech prostrap, it wasn't bad.

Thanks for the suggestions and recommendations. I'll try it out a bit first and see where I want to go with it. I'm actually doing a video/photo fun shoot with a beautiful musician and her artist/graphics friend on Sunday, so when we head up and I pull this out with the Polaroid back, should make for some fun and interesting photos! Not sure if it has the waist-level view or not. The CL images don't show it, I'll ask when I go to pick it up. Even if he doesn't, looks like Keh.com or ebay to pick one up easily for an OK price.

UPDATE: So, I went ahead and bought it. Oh excited I am!! There's a few rolls of quite old (not stored in freezer) 110 color and b&w film that came with it. Perfect for learning how to load the backs :)  I'm going to stop by Samy's tonight and pick up some of the Fuji instant-develop film, and start using that to start with for a pack or two, and then on the weekend actually loading some of the old 110 film and find a place that develops locally, if I can.

Third Party Manufacturers / Re: Is this a good deal
« on: February 27, 2013, 01:45:30 PM »
So got in touch, probably picking it up tonight. The seller ran some film through all 3 backs and there are no light leaks :)   He's a pro, so it's likely it's well used, but also well cared for. I'll look at some basics, the lenses, and make sure it functions mechanically. Yahoo! Kinda good timing, I'm actually going to be experimenting with some friends on Sunday, and since it comes with the polaroid back I can stop by Samy's and pick up some Fuji instant film.

Third Party Manufacturers / Re: Is this a good deal
« on: February 27, 2013, 01:10:10 PM »
Nope, I have enough cash around for that :)  Now I'll just have to see if I want to find some other lenses. I found this thread with a nifty chart that gives me an idea of the FoV of what I'm used to in mm for 35mm. The 90 & 180mm lenses that comes with it will probably be great to start with.

Lenses / Re: Canon EF 12-24 f/2.8L [CR1]
« on: February 27, 2013, 12:18:07 PM »
I think my number one concern would be corner sharpness. Based off of recent lens releases they'll get the center nice and sharp, but especially with their super-wides Canon has had some trouble getting the corner and edge sharpness up.

As for f/2.8 vs f/4, I'd rather f/2.8 since I can stop down to f/4 or beyond to increase quality when I need, but sometimes I just plain need as much light as possible. Although it will make it cost a lot more, and undoubtedly weigh a lot more. *sigh*  Tradeoffs, it's always about tradeoffs.

Third Party Manufacturers / Re: Google Glass
« on: February 26, 2013, 08:29:44 PM »
Wow, awesome! Congrats on that. I do software myself, and thought about maybe applying for that...but then decided I've got enough other 'projects', and the chances of me actually following through and producing stuff for it are slim so it should go to someone who will actually try and make use of it.

Third Party Manufacturers / Is this a good deal
« on: February 26, 2013, 08:28:14 PM »
Not sure I'm ready to pull the trigger, but out of curiosity, would this be considered a good price for this equipment? At some point in time it might be nice to try out some MF, although digital is way to expensive for me to get into, some used film gear like this might be where I'd want to go.


EOS Bodies / Re: eos solution disk
« on: February 26, 2013, 07:18:20 PM »
Just a word of warning buddy. The "Upload to web service" feature of the 6d will not work if you install the online update and work around the update-check.

You'll be needing some certificate that comes only with the installer from the CD.


I've already emailed canon about this. Maybe one day they'll do something about it.

There's no download from the Canon 6D website for the certificates? Weird. Have you tried googling for them?

Black & White / Re: Portraits of Poverty...
« on: February 26, 2013, 05:17:53 PM »
Great shots. For these type of shots, are you just walking the street and ask someone if you can take their photo? It seems to me they know you in some way, and have some level of trust in you.

EOS Bodies / Re: eos solution disk
« on: February 26, 2013, 05:14:36 PM »
You can download the latest versions of the software from Canon, and then follow one of the many online guides for installing the software without having a previous version, or the CD. It's freaking stupid, IMHO, but for some reason Canon still does it that way.

Lenses / Re: Brand spanking new
« on: February 26, 2013, 05:13:34 PM »
Wow, that was fast, basically all of the L lenses in that refurb sale are already out of stock. I'm kinda glad, I'm saving up for another lens that they didn't have in the sale, so just as well :)

But yea, fast shipping! Congrats, the 135L is a fantastic lens!

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