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Aerial Photography and Video > sigma dp1
 
 
SeismicCWave
Senior Heliman
Location: Hilo, Hawaii

It is raining over here still. I just converted a mechanical shutter trigger mount from my Leica D-Lux 3. I really doubt the USB port will support the Blip remote.

I was playing around in the studio today shooting with the DP-1 in RAW. I just converted one image to Jpeg from the original RAW file. This was shot with a Pocket Wizard attached to the hot shoe and with four studio flashes.

05-09-2008 07:02 AM
 
 
Hogster
Key Veteran
Location: Surrey, UK

Looking good Seismic! Looking forward to seeing some AP shots taken with it!

As you have the G9 (a camera I'm looking at), could you do some sample shots of the same subject with that and the DP1? I'm interested to see how they compare side by side ....

Cheers!


David
05-10-2008 12:19 AM
HOMEPAGE  
 
 
monterey_tip
Veteran
Location: Monterey, Ca - USA

Hey, since we're making requests, would you mind shooting it against a lower end Dslr if you have one available? I hope we're not asking too much of you.

Thanks a lot.

Tip
05-10-2008 12:23 AM
HOMEPAGE  
 
 
Hogster
Key Veteran
Location: Surrey, UK

Hehe, by buying the DP1 before everyone else, he should have seen this coming

Thanks!


David
05-10-2008 12:29 AM
HOMEPAGE  
 
 
SeismicCWave
Senior Heliman
Location: Hilo, Hawaii

You guys are not going to be able to tell much. So four cameras. 1) Sigma DP1, 2) Canon G9, 3) Olympus Evolt e-420 (low end for now), 4) Canon 1DsMk3 (high end for control).

Sigma has a 28 mm equivalent lens so I try to match the rest of the camera. The Oly 420 has a 28 mm equivalent. The Canon G9 was at the widest which is a 35 mm equivalent and the 1DsMk3 has a 35 mm prime lens.

I shot all largest and finest jpegs since that is the only way to keep all the images constant. If I shoot RAW I will be using 3 separate image processing programs.

I hand held all four shots.

05-10-2008 01:19 AM
 
 
SeismicCWave
Senior Heliman
Location: Hilo, Hawaii

If you look at the title of each image you will know what camera I used. I used auto WB on the Oly so the image looked a bit cold. The other cameras I remembered to set them to Flash as the WB.

I hope it helps but I couldn't tell the difference in picture quality from my monitor.;-)
05-10-2008 01:23 AM
 
 
SeismicCWave
Senior Heliman
Location: Hilo, Hawaii

OK, I managed to rush home after work today. I got the heli up and got off a few shots with the DP-1. I set camera to shutter priority at 1/800th of a second. I let the camera choose the aperture and it was at side open f4. The rest of the frames were similar until the end of the flight. A dark cloud was moving in fast and the contrast went away.

I set the focus to manual and kept it at infinity.

So, here it is my first aerial with the Sigma DP1.



I also loaded one I took with a Nikon D60 and a 20 mm lens for comparison.
05-10-2008 04:53 AM
 
 
monterey_tip
Veteran
Location: Monterey, Ca - USA

wow, you've been busy! Thanks for sharing your results. The DP-1 aerial looks more detailed than the D60...a little less saturated, but pretty impressive. Is that a Jpeg as well, or did you shoot Raw on that one?

Your studio shots make me think I need a 1DsMk3

Tip
05-10-2008 05:59 AM
HOMEPAGE  
 
 
SeismicCWave
Senior Heliman
Location: Hilo, Hawaii

>>you've been busy! <<

That's all I do all day. Play with cameras. ;-)

>>The DP-1 aerial looks more detailed than the D60...a little less saturated<<

Probably my fault. I was rushing it. The D60 image I took last week and I had done some color adjustments before sending the image to my friends. I don't remember doing any sharpening on the file so I pushed the sharpening to the same as the Sigma file prior to posting on here.

The Sigma file went through some sharpening but I didn't do any color adjustments. The image looked different after I loaded them.

The D60 was shot RAW and I converted to jpeg after I did some photoshop editing. The Sigma file was shot as fine jpeg and I didn't open it in photoshop. I just did some sharpening in camera raw.

>>Your studio shots make me think I need a 1DsMk3 <<

Thank you. I love that camera but it is a tank to lug around. I took it out of the studio once and promptly put it back.;-)
05-10-2008 06:45 AM
 
 
Hogster
Key Veteran
Location: Surrey, UK

Thanks for this Seismic! Any chance of seeing the full-resolution aerial shot from the DP1? It's hard to tell the difference in image quality from any camera unless one can see the original image

Many thanks again!


David
05-10-2008 10:12 AM
HOMEPAGE  
 
 
SeismicCWave
Senior Heliman
Location: Hilo, Hawaii

Sure David. How do I get you the full resolution shot?
05-11-2008 04:13 AM
 
 
Hogster
Key Veteran
Location: Surrey, UK

Here is Seismic's full-resolution AP shot:


(click to enlarge)

Looks very good!


David
05-11-2008 08:06 PM
HOMEPAGE  
 
 
SeismicCWave
Senior Heliman
Location: Hilo, Hawaii

Thanks David.
05-11-2008 10:24 PM
 
 
monterey_tip
Veteran
Location: Monterey, Ca - USA

Yeah, it does look good. Pretty close/on par with a low end Dslr. Of course, no comparison to a pro lens on a pro body, but still very good. What's your opinion of it Seismic? It's nice that you've had a chance to try out so many cameras.

Tip
05-12-2008 01:32 AM
HOMEPAGE  
 
 
SeismicCWave
Senior Heliman
Location: Hilo, Hawaii

It is pretty difficult to haul up a pro setup in a Trex 600, Logo 600 or smaller RC heli. With the smaller helis the user is pretty much stuck with a high quality point and shoot or the Canon 450D XSi, the Nikon D60, D40, the Olympus e-410/420 or the Pentax K100D or K200D.

The DSLR will offer the burst mode in AP if the job calls for such a requirement like a pano shot. Otherwise the Sigma DP-1 seems to be perfectly capable and the image quality is definitely equal of those dslr mentioned earlier.

I have hauled up a Canon 350D XT and the Nikon D60 in the Trex 600. I am not convinced that they create an image quality any better than the Sigma DP-1 at this time. I felt that the additional weight of these dslr setup really subtract from the safety margin of the AP machine.

There is definitely NO dslr with a 28 mm equivalent lens in the market that can match the weight of the Sigma DP-1. The Oly e-420 with the 25 mm pancake lens is the lightest but that is an equivalent of a 50 mm lens. The Pentax has a 21 mm pancake wide angle but the K100/K200 body is heavier than the Nikon D60. The lighter setup is actually the plastic kit zooms that come with the small dslrs.

As far as an everyday point and shoot the Sigma DP1 is not bad either. I do carry it around with me for the last couple of days and the slower write speed didn't bother me much at all. Where as the slower AF speed on the Oly e-420 bothered me a lot more.

So the bottom line in my opinion is that the DP-1 is very well suited for general purpose AP use.
05-12-2008 01:47 AM
 
 
monterey_tip
Veteran
Location: Monterey, Ca - USA

Very encouraging and thanks again for the demo and opinions. So when you say the delay doesn't bother you...are you talking about the delay in Jpeg, or Raw?

Tip
05-12-2008 02:01 AM
HOMEPAGE  
 
 
SeismicCWave
Senior Heliman
Location: Hilo, Hawaii

Both. The Sigma DP-1 does take longer to write to the card than other cameras including the Canon G9. So it is pretty hard to try and snap off three quick shots in a row. Also the contrast detection AF is very typical in most point and shoot with live view. It takes a while before the focus will lock in. Not a problem in AP because I simply use the manual focus and set it to infinity.
05-12-2008 02:15 AM
 
 
Seablade
Veteran
Location: floating around

here's a good review of the Sigma DP1:

http://www.luminous-landscape.com/r...sigma-dp1.shtml

"Vini, Vidi, Velcro"
05-12-2008 02:23 AM
 
 
SeismicCWave
Senior Heliman
Location: Hilo, Hawaii

Yes it is a pretty good review. I did buy the DP-1 after the review and the reviewer is pretty accurate in his assessment.
05-12-2008 04:59 AM
 
 
monterey_tip
Veteran
Location: Monterey, Ca - USA

That was a pretty good review. I was especially impressed with the iso 400 comparisons.
The reviewer had a good sense of humor in his conclusion:

"The subtitle of the review called the DP1 a "conundrum", and indeed its design is a bit of mystery. Firstly, it was announced at Photokina in September, 2006 yet didn't begin to ship until March of 2008. Elephants don't gestate that long. "

Tip
05-12-2008 05:24 AM
HOMEPAGE  
 
 
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Aerial Photography and Video > sigma dp1
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