Sigma 10-20mm on full frame

K

koffiejunkie

Executive Member
Joined
Aug 23, 2004
Messages
9,756
Reaction score
998
Location
Australia
Some time someone here (ldmelsa maybe?) posted an image that someone else had taken with a Sigma 10-20mm on a 5D, which showed some very heavy vignetting. I thought it was in this thread but now I can't find it. :confused:

Can someone point me to it?
 
BigAl-sa said:
Here are some nasties:

http://www.flickr.com/groups/sigma10-20/discuss/72157601140167638/
http://www.pentaxforums.com/forums/pentax-slr-lens-discussion/35875-sigma-10-20-full-frame.html

Having the hood on makes it pretty much unusable.
Click to expand...

Ah great. I don't know if I'm maybe just restricted by the Rebel's viewfinder coverage, but I don't see that weird-ass framing that the second image has. Not even at 10mm. In fact, from 14mm I see nothing at all!

My first roll is in for development, will get it later today, then I'll be able to see how it comes out.
 
This was at 14mm, 1/320, f/11 on Fuji Superia 800:



I guess the poor frame coverage on the rebel accounts for the corners. I didn't take any shots at 10mm or 20mm, I'll give that a try some time.

I'm somewhat disappointed with the 800 ISO film. It's more grainy than I expected, and the colour isn't great if the content did already have very highly saturated colours.
 
yeah 800 sucks
200 FTW:


1:1 crop:
3473311325_e6c069c23d_o.jpg



:D:
 
Yeah, I have no problems with 200. It's just that I take so many of my shots where 200 ISO just doesn't cut it if you have to shoot hand-held and your subjects are moving (think parties, etc).

Here's that has some dark, detail-less areas. This was with the 50mm f/1.8, at 1/1000 and f/11:



For interest's sake, I went Jessops today to pick up the film, and saw they had a 30D in the window for under £400. I had a play with it, and, aside from the smaller screen and the much simpler, it could have fooled me - it's just like the 40D.

But then I had a play with the 50D. Sigh...

EDIT: made the image a link to the full size
 
Yes, that's their "high res"

None of my pics are under exposed. Just about all of them are over by half a stop to a full stop. The Rebel's metering is pretty poor. I have it on -1EV permanently now.
 
koffiejunkie said:
I meant after seeing the results of this film. -1EV means under by one stop, no?
Click to expand...

no - now you're really underexposing :D
you'll get grainy results and crushed blacks

+1 means longer exposure - if your cam is underexposing use +

+ means you want it brighter
don't be afraid to overexpose print film
this is +2EV:
3459430857_24cdc2ab4f_m.jpg

see, print film skrik nie vir overexposure

skrik nie eers vir "The Bean" nie :D
 
Last edited:
koffiejunkie said:
Because every shot is over by about at least a stop - some way more.
Click to expand...
that's very strange
how can you tell with print film?
are sure it's not the shop's scanning?
the only way you can test the camera's exposure meter is with slides
the way negs expose coupled with the minilab's scanning means that you can't tell with negs

koffiejunkie said:
Why does both the body and lens have MF/AF switch?
Click to expand...
beats me
 
ldmelsa said:
that's very strange
how can you tell with print film?
Click to expand...

Like I said - I compared the metering to the 40D. You know, point both cameras at the same thing, and see what the meter says. With the same aperture and ISO setting, the rebel always needs a stop or two slower shutter to put the exposure meter right in the middle. The K1000, gives the same result as the 40D, most of the time.

ldmelsa said:
are sure it's not the shop's scanning?
Click to expand...

I doubt. The film from the K1000 always looks more-or-less right. The shop doesn't know which camera I used.
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X