Register · Search · Software · Join Upload & Sell · Hosting

	Moderated by: Fred Miranda
	Username   Password FM Forum Rules Canon SLRs, primes, and zooms lenses reviews FM Forums | Canon-mount SLRs | Join Upload & Sell    Search Used end    Archive 2009 · 7d viewfinder, pincushion distortion?

capital Offline Upload & Sell: Off p.1 #1 · 7d viewfinder, pincushion distortion? Is it normal that the 7d's finder exhibits some pincushion distortion? Oct 09, 2009 at 08:05 PM

Gochugogi Offline Dedicated FM Upload & Sell: Off p.1 #2 · 7d viewfinder, pincushion distortion? Depends on the lens as the VF image is simply a transmission of the image from the lens. The wide end of zooms usually suffer pincushion distortion, especially really wide ones and/or those with a large zoom ratio. I know I can see pincushion distortion in my 5DII VF when I use the 24mm side of the 24-105 L. Don't notice any with the 50 1.2L. Oct 09, 2009 at 09:10 PM

capital Offline Upload & Sell: Off p.1 #3 · 7d viewfinder, pincushion distortion? hmm.. But I see pincushioning in the VF and none in live view.. Plus, my lens is has some barrel distortion, not pincushioning Oct 09, 2009 at 09:29 PM

Yakim Peled Offline Dedicated FM Upload & Sell: On p.1 #4 · 7d viewfinder, pincushion distortion? Is it so with all your lenses? Is it so with all apertures? If you have a zoom lens, is it so with all FL? Welcome to FM. Happy shooting, Yakim. Oct 09, 2009 at 10:00 PM

capital Offline Upload & Sell: Off p.1 #5 · 7d viewfinder, pincushion distortion? Yea all lenses/apertures, and it doesn't change at all when switching focal length on a zoom Oct 09, 2009 at 10:33 PM

brainiac Offline Dedicated FM Account Locked p.1 #6 · 7d viewfinder, pincushion distortion? When you make a 1.6 crop non-focussing screen look as big as the one in the 5D2 something's gotta give. Oct 09, 2009 at 10:46 PM

Yakim Peled Offline Dedicated FM Upload & Sell: On p.1 #7 · 7d viewfinder, pincushion distortion? capital wrote: Yea all lenses/apertures, and it doesn't change at all when switching focal length on a zoom Then I'd consider going back to the store and check another copy. Happy shooting, Yakim. Oct 10, 2009 at 12:25 AM

capital Offline Upload & Sell: Off p.1 #8 · 7d viewfinder, pincushion distortion? Yea, I eventually will.. I thought crowd sourcing would be more efficient though. All I need is for someone who has a 7D to look though there viewfinder! Oct 10, 2009 at 01:59 AM

Gochugogi Offline Dedicated FM Upload & Sell: Off p.1 #9 · 7d viewfinder, pincushion distortion? capital wrote: Yea, I eventually will.. I thought crowd sourcing would be more efficient though. All I need is for someone who has a 7D to look though there viewfinder! Shot all afternoon with one and still can't see any pincushion. Lots of bright red flashes, a really bright VF data display (actually distracting) and the focusing screen texture is a little too apparent to my eyes, even with a F2.8 lens. Oct 10, 2009 at 04:44 AM

jenius Offline Upload & Sell: Off p.1 #10 · 7d viewfinder, pincushion distortion? Hi capital, I got to this thread via Googling. My 7D VF does exhibits pincushioning too. I haven't checked another copy yet, but might do so tomorrow. Effectively, the corners of my VF are not exactly 100% because the pincushioning takes away some of it. It is not a problem to me so far. But after some googling, I begin to worry that it might be a problem on only my copy and a few others, since very few have brought this up. The pincushioning is very obvious if you try to align something straight to the bottom or top of the VF. The shot will come out undistorted and with the missing corners back. Nov 06, 2009 at 02:30 PM

Gochugogi Offline Dedicated FM Upload & Sell: Off p.1 #11 · 7d viewfinder, pincushion distortion? One of the problems with a 100% VF is they're almost too accurate. I can see vignetting in the corners when I use my EF-s 17-55 2.8. Not noticeable with teles or longer zooms designed for FF. Nov 06, 2009 at 05:14 PM

jenius Offline Upload & Sell: Off p.1 #12 · 7d viewfinder, pincushion distortion? Gochugogi wrote: One of the problems with a 100% VF is they're almost too accurate. I can see vignetting in the corners when I use my EF-s 17-55 2.8. Not noticeable with teles or longer zooms designed for FF. I am using 17-55 too! =) When I first see the pincushion at 55mm, I thought the 100% VF is so good that it reveal the flaws of the lens. But when aligning the bottom to a straight object, the output image will come out without pincushion and the missing corners from the VF back. I hope you can try it out too and let us know the result. Thanks! Nov 07, 2009 at 04:48 AM

molson Offline Dedicated FM Upload & Sell: On p.1 #13 · 7d viewfinder, pincushion distortion? My eyeglasses exhibit slight barrel distortion (must be the Nikon lenses) so the 7D viewfinder optics compensate for them perfectly. Nov 07, 2009 at 11:47 PM

	FM Forums | Canon-mount SLRs | Join Upload & Sell end

You are not logged in. Login or Register

Username   Password   Lost your password?