Showing posts with label Canon. Show all posts
Showing posts with label Canon. Show all posts

Tuesday, August 9, 2011

Seafair 2011

Took Ry to Seafair this year and managed to get a few photos too.
I decided to try some "slow" shutter speeds to get some panning blur.
Used a 70-200 2.8 IS + EF2xii = 400mm.
I found that when shooting planes: 1/100 mostly junk, 1/200 not enough blur, 1/160 just about right. I think that's because the planes aren't often going exactly perpendicular to me, and are usually pretty far away.
When shooting boats: 1/200 was great. They were often much closer and moving mostly perpendicular.

Chimping instead of shooting, or watching the ominous crane above.

I'm always surprised how low and close together they get. I can only imagine the conversation is constantly "dude, get off me."

Went with fast shutter speeds for the wakeboarding.

It gets really loud over those houses.

This is the event I'm always trying to catch and it keeps me coming back. I think the slow shutter speed helps show it better.

I-90 makes a nice background.

Didn't often get two lined up in the right place at the right time and in focus.

I didn't see this until I was processing later: the tail has departed the 'plane. The best part is the leftover vertical part naturally folds... right into the blazing hot exhaust... which melts it down. I wonder if they recovered the gopro?

Nice to see the tail isn't necessary for a sweet rooster tail or even finishing the race, though he did come in last.


Tuesday, December 21, 2010

December 21 2010 Lunar Eclipse Naples FL

The weather in Naples, FL on December 21, 2010 was clear enough to allow me to get some lunar eclipse photos. I found the NYIP eclipse page very helpful for timing and exposure guidance.
I used a Canon 50D, EF 70-200 f/2.8 L IS and an EF 2x ii.
Exposing for 2 seconds or more was enough to for the moon's movement to blur the photo. With the EF-2x on, apertures wider than F/8 didn't seem sharp enough. ISOs above 800 seemed to lose too much detail to noise. I only used IS while focusing in live view. And a cable release and mirror lock up seemed to help.








Thursday, April 29, 2010

Seattle Space Needle and Full Moon April 2010

Thanks to TPE and google maps for an approximate location, EXIF data on Flickr for an exposure estimate, and DOFMaster for hyperfocal distance calculations for aperture, I was able to work out all the details for this two weeks before it happened. The weather forecast was so bad that night that I almost gave up. When I looked at the sky a few hours before this shot, I figured it might happen so I drove out there. 
Yes this is one real photo (tweaked pretty hard in Lightroom though). 



Sunday, February 15, 2009

High speed sync flash - water drops

Not hard to set up, but difficult to get right. High speed sync is just a button on a flash, but it lets me shoot at 1/8000th of a second. Setting the flash inches from the glass of water allows me to shoot at f/8 too... and it gets the flash wet.
I had the flash connected to the camera with two off camera hot shoe cords. I liked the light coming from behind and aimed up a little. Shutter speed and aperture were 1/8000 & f/8 mostly. ISO between 100-400. The camera was on a tripod and the lens was as close as it could focus. Live view helps a lot. I had one glass filled with water and poured water into it with one hand while I held down the button the cable release with the other. Flash was in manual mode at 1/128 or 1/64. Paper towels were everywhere.






Tuesday, December 23, 2008

Shooting with Gene

A couple Friday's ago, photo-bud-Gene and I went shooting. We started at the Edmonds ferry terminal and waterfront. It was raining the whole time so we eventually gave up and went to Pike's Place Market.














Wednesday, November 5, 2008

Part 4: Canon 50D sRAW Noise and High ISO test

This sRAW thing is fascinating.

I can't reproduce sRAW results from full RAW files. Not even close. I wish I could though.

On the left is a 50D RAW file at ISO 1600, 200mm f/2.8.
On the right is a 50D sRAW2 file at ISO 3200, 400mm f/5.6 (200mm @ f/2.8 + EF-2x)
Both were cropped to the middle 600 pixels with no resizing necessary.

I thought the higher ISO and EF-2x should have ruined the one on the right, but sRAW overcame that. I'll have to try that test again with smaller apertures to be sure.

It seems to me that sRAW should be valuable to bird photographers who can't get very close to small birds in low light and wonder if they should crop a raw file or use an extender and trade the stop or two of light for higher ISOs. And indoor or night sports photographers where high ISOs and fast shutter speeds are necessary and will either crop use the extenders and don't need huge prints anyway.

sRAW is NOT for saving space on a memory card. The files are extremely bloated for their small resolution. And they don't relieve the buffer much at all. Probably because sRAW is generated from the RAW file, but that would slow the camera down (and it doesn't)?

I now tend to use sRAW1 when at ISO 6400 and sRAW2 when at ISO 12800.

Here's an example of an indoor low light sports photo. sRAW2, ISO 12800, 1/1000, f/2.5, 85mm, cropped not resized. Exposed to the right, corrected and heavily processed in Lightroom.



Monday, October 27, 2008

Part 3: Canon 50D sRAW Noise and High ISO Test

I shot three sets of black frames for these comparisons. I went from ISO 1600 to 12800 for RAW, sRAW1, and sRAW2. I cropped all photos to 200x200 pixels then resized 200%.

1st set: exposure +4 (max) in Lightroom.
2nd set: exposure 0 + Lightroom noise reduction at 100 (max).
3rd set: exposure at -1.5 with noise reduction at 100 again.

The first set is totally exaggerated and not very useful.
In the second, it looks like ISO 3200 on the 50D is fine and 6400 might be useful.
The 3rd is a good example of how I try to use high ISOs; overexpose by a stop or two and darken in Lightroom. In this 3rd example I'd say 6400 is fine and 12800 might be useful.

sRAW modes seem to improve the sharpness and decrease the noise (more testing to do). I was expecting to see more of a difference between sRAW1 and sRAW2.








Friday, August 29, 2008

Part 2: Canon sRAW Noise and High ISO Test ( 40D reference for the 50D )

The previous test was quick and had a lot of variables I didn't bother to think about. This time I did, so I eliminated what I could.

I'm trying to figure out if the sRAW mode on Canon's recently announced 50D will be useful to me. So I'm testing the sRAW mode on the 40D and here are my next round comparison shots...


I decided to eliminate the resizing variable by changing my focal length so the same number of pixels are covering the same parts of the scene (I just cropped the RAW file to the sRAW dimensions and get the same view). The first pair is underexposed and shows the noise differences well, the middle pair is a normal exposure and shows sharpness differences well, and the 3rd pair doesn't change the focal length so the RAW file had to be re-sized to match the same view.

The previous test proved to me that noise was lower using sRAW. This one agrees. The previous test also made me wonder if sRAW was sharper too. This one seems to agree, but makes me realize that the question is more complicated than that. Yes, 4 sRAW pixels are sharper than 1 RAW pixel. The middle pair shows this very well. But that's not how I'd use the camera. I'd use it like the 3rd pair, and after resizing, they are similar.

This does lead me to a valuable conclusion: I expect that canon's 50D in sRAW mode at 7mp will be sharper, and have significantly less noise than an 8mp 30D. I already expected that, but now I'm convinced the difference will be drastic and worthwhile to me.

That means it's time to upgrade! YESSSS!

Other interesting conclusions: The sRAW file size is typically half the full RAW file size, which is unfortunate because the resolution is 1/4. Also, burst mode did last a little longer. I got about 17 RAW files out at 6.5fps, but could get over 20 sRAW files at 6.5fps and the buffer cleared faster. So sRAW mode isn't so much for when you want smaller files, but for fast action bursts at high ISOs.

Details: 24-70 2.8L at 35mm and 70mm and f/8, 70-200 2.8 L IS at 200mm and f/8, 40D, manual focus with live view, on tripod, using mirror lock up and cable release. RAW and sRAW files processed in Lightroom with everything zeroed. Jpegs at highest quality while cropping and bi-cubic resizing. 40D's high ISO noise reduction was OFF this time.

Thursday, August 28, 2008

Canon sRAW Noise and High ISO Test ( 40D reference for the 50D )

When Canon announced the 50D, the specs that caught my attention were the sRAW modes. I liked the idea of sRAW mode on the 40D but couldn't manufacture a reason to shoot a 10mp sensor at 2.5mp. It looks like the 50D will shoot it's 15mp sensor at 7mp. For some of the things I shoot that sounds worthwhile. Then I wondered if those sRAW files would be less noisy at high ISO and just had to test it...

At first I shot a variety of exposures of the same scene and cropped the full size files to match the sRAW size. A noise difference didn't jump out at me at all. What did was how much sharper the sRAW files were. It looks like I either had image stabilization on in one shot and off in the other (which I didn't), or I used a much smaller aperture to get more depth of field (which I didn't). I'll have to try this again with a tripod and manual focusing.


Then I shot black frames (lens cap on at normally fast shutter speed) at ISO 1600 and 3200 in RAW and sRAW. That's where I see a huge difference in noise. Here's the ISO 3200 comparison. I see blatant noise reduction in sRAW. The noise in sRAw seems to be all luminance and no chroma too (someone please explain that to me). I also see more noise in the 40D at 3200 than the 30D at 3200 which is not what I expected (or was advertised). And I should mention that I had to beat the heck out of these black frames to get them to look this bad/obvious.


I did this test in 5 minutes. Please leave comments if you have suggestions for improving the method.
Details:
AWB, Manual Mode, ISO 3200 and 1600, 24-70 f/2.8 @ 70mm & f/4.5 on the 40D, 70-200 f/2.8 IS @ 70mm & f/4.5 on the 30D, handheld, autofocus on middle point at closest flower, raw files 'barely processed' in Lightroom, no manipulation (everything zeroed) on the flower shots, for the black frames only exposure slider set to +4, output was full jpg at max quality.
jpgs from sRAW files cropped to 800x800 near middle of frame. 300x300 corner for black frames.
jpgs from RAW files bicubic downsized to match sRAW dimensions (1944x1296) then cropped to 800x800 near middle of frame.
for exaggerating black frame noise: cropped 300x300 bottom right corner (because noise appeared strongest there in the 40D) then up rezed 200%, brightness +50 and contrast +25 to exaggerate for visibility.

I have high hopes for the 50D and its sRAW modes now.


Tuesday, August 12, 2008

Mountain Meadows Farm Company Picnic

This was my first time to Mountain Meadows Farm for a company picnic. I hope they do it there every year. I loved it. I was impressed with the food, games, and entertainment. Mt. Si in the background was fabulous too.
The thing I wanted to do the most was to get some fly fishing instructions since I heard there would be some. They had a few rods laying around and a pair of instructors to help whoever wanted to try. The instructors were great but I was really bad. Even C tried helping me after she figured it out. I told her I needed to try it in Alaska. Ha! I got the string tangled on the pole twice. That's pretty bad.
On our way out we stopped by the giant basketball court. That was totally cool. I don't think I ever made a basket but it was too fun to worry about things like that.



Monday, March 17, 2008

Mukilteo Waterfront

On a rare, beautiful day in the Pacific Northwest, I got to hang out on the Mukilteo waterfront to watch the sun set. I only had my infrared camera at the time though.





Wednesday, December 26, 2007

Christmas Dinner 2007

C and I went to Marc & Heidi's on Christmas Day. They have two really cute kids and two fabulously friendly cats. Purvis is grey, and Cooper is orange. C says her arm is sore from carrying Isadora around. It snowed an inch or two while we were there so we were all excited. I spent a lot of time shooting the cats.



See the rest of the pictures here.


Sunday, December 16, 2007

The Paramount

C and I went to see Collective Soul, David Gray, and KT Tunstall at the Paramount last night. They were all really great. The keyboard guy for KT banged on a trash can lid for the last song, and Collective's lead singer looks like Sammy Hagar now. Between sets I had to pull out the digicam and shoot the amazing ceiling.