What is the typical DR for following?

noisejammer said:
Maximillian, I can offer better than anecdotes. ...
The only really good anecdote about my eyesight is the following:
When I was about 23 my girlfriend at that time was looking for a new spectacles frame. She was shortsighted.
I was bored and stood around in the shop and remembering my last eye test back when I made my drivers license I looked at the test chart at the wall with all the letters on it. I asked the shop owner about the reading distance and he told me right there from where I was standing.
Without cheating I asked him: "what about F, S, T, A, etc. and the small numbers reading 160% on the side of this line."
(don't know the original row of letters I could read back then)
He looked at me with a strange and puzzled look and then said: "Man, that would have been really good - if I had switched on the backlight of this chart. But now I believe I won't make much money with you." And smiled.
Upvote 0

Tamron SP 15-30mm f/2.8 Di VC USD Image Quality Examination

BeenThere said:
TWI by Dustin Abbott said:
BeenThere said:
Based to a large extent on Dustin's early review I purchased the new Tamron. One of my interests is night photography and the night shots from Dustin's review looked promising. I was specifically interested in the Coma performance wide open and did some comparisons with a few other wide angle lenses to see how the new Tamron faired. Bottom line was that it did very well in the comparisons. Perhaps my new favorite starry night lens. My results are posted here:

http://www.ronbrunsvold.com/tools/wide-angle-lenses-for-night.html

Ron, with your permission I would like to link to your findings in my upcoming three way shootout. You've given more time to this than what I will have time to do.

Dustin
I don't have any problem with you linking to my findings. As far as infinity focus goes, when testing, I almost always use live view to find infinity and it is hardly ever exactly at the hard stop or infinity mark. Even the Zeiss 21 mm Distagon that i tested wasn't quite at the hard stop though it was very close.

Ron



P.S. My single greatest challenge with shooting nightscapes with the 16-35mm f/4L IS has been because infinity focus (manually) isn't calibrated properly. You can focus beyond infinity, and as a result get blurry results. This has been true on both copies I've used thus far. With familiarity I would find the proper place to focus, but sometimes during the length of time that I have lenses I don't always get an opportunity to spend a lot of time figuring that out. The Tamron 15-30 was much easier - I just twisted the dial to infinity, went out and shot, and got great results.

That was a strength for the first copy of the Tamron 15-30 that I test. Infinity was right around the hard stop.
Upvote 0

EF 11-24mm f/4L: Our First Impressions

kraats said:
It is not really suites for landscape. The Professional landscape photographers that I know will not bit it. I think it is more suited for architecturen maybe.
I'm interested in using mine for both, particularly once I have 50MP images to crop ;-)

That said, I've had the EF14 2.8L II for several years and found it of more use for architectural work.
Upvote 0

Lastolite Ezybox Hot Shoe Softbox used with Alienbee Strobes???

For the crowd here to better answer your question: will you need to go back and forth between firing AB's and speedlights in the back of this softbox? And is it the smallest of these? I looked in Google images and see at least two sizes. Light stand use or hand-held by assistant?

I have Einsteins and they fit with appropriate ring through the back of a larger QBox but the smallest EzyBox looks too small at the light source end.

Do you already have the AB's and want a little softbox or are you interested in having more light and have not picked the source/gear? The Witstro is a lot of light out of a smaller head and because of its tube -- very good in softboxes of all sizes.

One high-quality manufacturer for some speedlight-to-Buff/Balcar mountings is Kacey Enterprises. These are paired with their own modifiers but might work in your situation.
Upvote 0

Review

I like the scene, I like how you framed, reflections in water of this sort are most always good, even the utility pole array is placed rather unobtrusively.
BUT, it's a great argument against phone cams, there's just no fine detail, any print would have to be tiny.
Regarding the utility pole array, utility poles are a fact of modern landscapes. Choices are to incorporate them as elements of interest which I think was well done here, or alter reality in post which I think would have detracted from this image.

Good, no, great eye, poor camera.
Sure, the best camera is the one with you, but in challenging light a phone cam has great potential to disappoint.
Upvote 0

Redrock Micro To Introduce Auto Focus Tracking System?

bgoyette said:
it seems to be all right here in this microremote to microtape cable

http://store.redrockmicro.com/Catalog/microTape-Sonar-Rangefinder/micro-remote-accessory-cable.html

"This connection provides power from the basestation to the microTape (through the basestation accessory port) and also provides upwards compatibility for future capabilities."

As for cost, RRM makes one of the least expensive quality remote lens drive systems on the market. The Sonar unit seems very reasonably priced as well. But, I think that in the gimbal market, something like Dual Pixel AF with an STM lens on a C100 makes way more sense than something like this that is really designed for cinema lenses. I can barely carry my ronin/c300)17-55 2.8 for more than a minute or two. I can't imagine adding a cinema lens, and a RFF and a sonar unit plus power to that package, just to get something that canon can do with a pancake lens (and have face recognition to boot).
I'd just be wanting to use this on my 5D3 with my normal EF "L" lenses......
Upvote 0

6D autofocus system vs 7D....

I've owned a 6D since the first week they came out and love it. When I purchased the 6D I also owned a 7D. I kept both for roughly six months and finally sold the 7D, as I found I was very seldom using it. I found the 6D autofocus to be more accurate and consistent than the 7D. About the only thing I used the 7D for was kids sports using AI servo and that was less than 5% of what I shoot.

The 6D autofocus gets a bad rap in my opinion. Sure, its not as good as the 5D Mk3 or 1Dx, but I find its autofocus system to fine for almost everything except shooting subjects that are moving directly toward or away from you.
Upvote 0

EF 16-35mm f/2.8 II Replacement [CR1]

I use 16-35 2.8II for professional real estate shoots, including for magazines, events and general landscapes etc., and none of my customers have ever complained about soft corners, and I don't really see them either.
Sure, I use Lightroom and it easily fixes most faults.

Unless this new version is absolutely amazing, I'll just keep using my 2 year old lens for a few more years.

I've often found that once the lens has been in production for a couple of years, the later batches often perform a lot better than the first or second batches.
I bought mine, new, about 2 years ago, so any teething bugs had been worked out, or I'm lucky enough to get a good copy.
Upvote 0

Best Backup Strategy?

Slides: single copy, take a chance, scan the important one so it become digital asset.
Digital assets:
- Images I currently work on: LaCie 2Big 2x3TB RAID1 as main data disk on MacPro; SSD is only used for OS, application, and scratch disk.
- Local backup. LaCie 4Big 4x4TB RAID 1
- Off-site (70 miles away): LaCie 2Big 2x6TB RAID 1

Buying hard drives is quite affordable and convenient. RAID1 protects against single disk failure. I used to have Buffalo Tech NAS drives, but with better LANs and better transfer rates over USB3 and thunderbolt, ethernet is no longer a good option.

I used to have CDs/DVDs but 1 TB = some 140 DVDs, plus they degrade over time. Short of a widespread electromagnetic blast, I should be fine. And then a few images will be the least of my problems.
Upvote 0

Samyang To Announce 100mm Macro This Summer

lintoni said:
mrzero said:
quiquae said:
NancyP said:
Depends who you count as "big boys". If it has the IQ of the Zeiss 100 f/2.0 makro-planar, and goes 1:1, and has auto aperture, there are people who would consider 800 bucks reasonable in comparison to the manual focus Zeiss, generally regarded as a stellar lens.
Samyang has never made an automatic aperture lens, and besides, this is said to be an f/2.8 lens, not f/2.0.

Actually, they released a version of the 35/1.4 for Nikon that has the focus confirmation chip and electronically controlled aperture. http://www.bhphotovideo.com/c/product/859180-REG/Samyang_SY35MAE_N_35mm_f_1_4_Wide_Angle.html

I don't understand why they haven't made this an option on more of their lenses. I want to get the 14mm, but I'd really prefer the convenience of auto aperture, and I don't want to have to sell a used one if that model comes out in a few months.
The 14mm is a great lens, regardless of how aperture is controlled, don't use that as an excuse to deprive yourself! :)

I'm full of excuses! If they hadn't announced that 35 with the auto aperture, I'm sure I would have bought one by now. I just figured that it was coming on the 14 any time now, given its popularity. And, although I am good at buying things on ebay, I am not as good at selling them.
Upvote 0

Anyone receive 11-24 yet (or shipping notice)

Private is right - the geometric distortion is well controlled, but bending all that light to fit in a 3:2 / 16:9 frame causes projection distortion on the sides & corners. In terms of video, have you seen this video from Canon:

www.youtube.com/watch?v=jXTSrxuZ43A

If not, it should give you a better idea about its use. Also, how did you get a hold of a 5Ds?
Upvote 0

Sigma 24mm f/1.4 Art first resolution testing posted - LensTip

Pixel said:
One more note on the Sigma off center AF problem, I went down to the camera store and tested a different 24 1.4A in addition to a 35 1.4A on a 7D2 off of their shelf (not mine) and noticed the exact same problem in those two lenses when shooting off center AF. There must be hardware or firmware problems in relation to the 7D2. That's my only conclusion.
I'd love to hear other thoughts and test results.

I've shot the 35 Art and I constantly used off-center AF points. With that lens, I shot off-center plus-shaped clusters (i.e. '+' pattern of 5 points) or often single AF points given that f/1.4 can be unforgiving to larger AF selection areas.

But I'd give that AF a B. Consistency and speed were quite good but not world class. As an amateur, I had misses, but most of them were from misusing such a wide aperture on relatively close subjects and not due to the AF.

But I can't speak for the 24 Art. I've never shot it.

- A
Upvote 0

Filter

Forum statistics

Threads
37,445
Messages
973,900
Members
24,808
Latest member
Djiran

Gallery statistics

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