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A SLR with a big sensor?

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nille1234 said:
Thanks a lot for all your help. I've understood now that getting
the right DOF is quite complicated and isn't just a matter of
having a "big" sensor.
I might buy the teleconvertor to be able to zoom in and get a
shallow DOF that way. Although I think it is a bit expensive.

Thanks again

Nille
Click to expand...
Nille, what condition is your C-7070 in and are you located in the US?

I am in the process of selling my Nikon and Fuji DSLR equipment (now using Pentax DSLRs) and I would be willing to make you a VERY good offer on a trade if you're interested in a used Nikon D70 camera in excellent condition. My father is looking for a good Olympus C-series camera and he'd probably love the C-7070.

Email me if you're interested.

--
http://www.jjjphotography.com
 
Your point only confuses the issue being that a 20mm lens is a 20mm lens no matter which camera you put it on. Only the CoC is chosen different.

FOV is of course different between the different format cameras but that doesn't change the DOF. By linking FOV into the understanding of DOF only confuses the main issue of DOF and leads many into the wrong conclusion that when they buy a 14 to 54 mm lens they are buying a 28 to 108 mm lens..

Of course this is my opinion. I never mentally convert imagined focal length based upon FOV.

Ed
Guy Parsons said:
To correct that chart to give the same field of view for the
cameras, the three I reworked turn out like this......

C-7070 20mm actual fl @ f/5.6 @ 5 feet DOF = 1.3 feet

E-1/300 41mm actual fl @ f/5.6 @ 5 feet DOF = 0.75 feet

35mm film 80mm actual fl @ f/5.6 @ 5 feet DOF = 0.38 feet
(didn't have 82mm in their chart so used 80mm)

The APS sized sensors will fall in there somewhere but I'll leave
that to someone else.

So for same field of view at same focus distance the depth of field
does shrink with sensor size getting bigger.

Regards............. Guy
Click to expand...
 
Silly Canonite, getting a shallow DOF is easy with the E series cameras.

Besides, does he really want to pay $3000 for a plastic Canon? Yuck!
Barry Stewart said:
If it's only a problem when on the long end of the zoom, it could
be because your f-stops are automatically tightening because of the
variable aperture (most zoom lenses have this, some worse than
others.)

Though I haven't tried them, there are software filters that can
blur the background.

In Oly 4/3, you may need to get the fastest of the lenses f-2ish to
give your DOF blur. Otherwise, the Canon 5D would be cheapest
full-frame DSLR — at about $3,000 USD.
--
Barry

Equipment in profile.
Click to expand...
--
Dana Curtis Kincaid
http://www.angrytoyrobot.blogspot.com

Olympus E500
Minolta Scan Dual IV film scanner
Contax G1
Contax G2
Contax 167MT
Sony V1
Fuji 2800z
Sony Video Cameras
Canon S9000
Epson 820

Apple PowerMac Dual 2GHz G5
 
If the whole point of this thread is depth of field, and the user wants an image, I can't see that they would worry what lens focal length it is because what they want is say, head and shoulders taken from 5 feet.

So they choose a zoom setting or prime for that particular camera that yields the same image on all those formats at that same distance.

That's what my post was about, the depth of field does shrink using the same field of view from the same distance (giving same perspective), and that's what is the real situation that will have an effect on any portrait shot.

Regards............. Guy
 
Hey, some VERY nice pix there!

-Dana

:-)
Higuma said:
Most of the time it is up to you and your skill set behind the
camera as opposed to what you can buy...

Lourens is quite right - that a 4/3 camera has a lot of capability
to control DOF...

Sometimes less...







Sometimes more...







Cheers...

Click to expand...
--
Dana Curtis Kincaid
http://www.angrytoyrobot.blogspot.com

Olympus E500
Minolta Scan Dual IV film scanner
Contax G1
Contax G2
Contax 167MT
Sony V1
Fuji 2800z
Sony Video Cameras
Canon S9000
Epson 820

Apple PowerMac Dual 2GHz G5
 
If you are, I'm going to ask Kim Jong-il to aim his next missile at your house (before it lands uselessly in the Sea of Japan.... LOL!)

In digital, I'm totally Oly.
***

I was only saying if he really is looking for the full 35mm frame DSLR, he'll have to look down the barrel of a Canon.
--
Barry

Equipment in profile.
 
It is an amazing piece of kit and gives the operator all the tools they might need to produce whatever they want...

I am lucky to have great equipment because with the 4/3 system - as with most things - usually it's only the operator that limits the posiblilties...

Cheers...

 
Oh no! I am so ashamed. :-(

Sorry!

Dana

I love my new E-500!
Barry Stewart said:
If you are, I'm going to ask Kim Jong-il to aim his next missile at
your house (before it lands uselessly in the Sea of Japan.... LOL!)

In digital, I'm totally Oly.
***
I was only saying if he really is looking for the full 35mm frame
DSLR, he'll have to look down the barrel of a Canon.
--
Barry

Equipment in profile.
Click to expand...
--
Dana Curtis Kincaid
http://www.angrytoyrobot.blogspot.com

Olympus E500
Minolta Scan Dual IV film scanner
Contax G1
Contax G2
Contax 167MT
Sony V1
Fuji 2800z
Sony Video Cameras
Canon S9000
Epson 820

Apple PowerMac Dual 2GHz G5
 
In much of my shooting, DOF blur is of little concern to me — but I was going through some of my shots and found an example of the blur you can get in the 4/3 mount. E-1 JPEG, straight off the sensor.



This was at f4.5 (and 1/2000th, I believe). Hoary marmot at the Hope golf course (west coast of Canada).

Do you want even more blur than this? Try the 50-200. f4.5 is the best you can get on the 40-150 — but it's pretty darn good!
--
Barry

Equipment in profile.
 
Was supposed to say > . I hit "post" and the words in " " were hacked off.
--
Barry
 
I inadvertently used keystrokes that this site does not like — and it whacked out important parts of the message.

(I actually made a 3rd reply about an hour ago and it got lost in cyberspace when I hit "post". Weird....)

I was trying to say that even the 40-150 "kit lens" is capable of DOF blur. On the long end, its best f-stop is 4.5, varying up from f3.5 at the wide end. The 50-200 would have even better numbers.

As others have said, the 40-150 makes for a nice light carry-around lens... and it performs well (AF-wise) in outdoor light.
--
Barry

Equipment in profile.
 
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