doug_nelson5

<p>I use an Olympus 24 and a Nikkor 20 on my 6D. I set AV and keep the aperture at f5.6 or f8. Set the infinity mark on the aperture you've chosen and you don't need to focus. (If you do want to focus, use your Canon's Live View). Do a test shot using your histogram readout to make any exposure adjustment. These old manual focus lenses are great, but for fine focus at large apertures and any uses requiring accurate focus, Canon EF-S's and EFs zooms or primes would serve you better.</p>

<p>If weight and /or bulk are issues, you're not going to get anything smaller/lighter than the bodies you have, unless you switch to the SL1 from the 7D. To me, the problem would be these massive beer bottle zooms. I travel with a 40mm f 2.8 STM on my 5D2 and an SL 1 body. Any good 50mm will give you about 80mm coverage on the SL1.The EF 40 is a nice 62 or so on the SL1. I use an 30 year old Olympus OM 24mm f 2.8 via an adapter on the full-frame body. 16mm is a problem; maybe the EF-s 10-18 STM zoom?<br> A big problem with my set-up would be changing lenses in dust and moisture. Everything's a trade-off.</p>

<p>The EF 40mm f 2.8 is sharp, very much up to the demands of the 6D's sensor, gives minimal barrel distortion and focuses very close. And did I mention cheap?</p>

<p>I have my five-year old 5DII here with me, after just getting off the phone with Canon support. After downloading an important wedding shoot (my daughter's), I tried to format my cards in the camera. They won't format. When I put in a CF card I didn't use, it tells me it cannot be formatted. When I turn the 5D2 on, the screen doesn't come on. I have to send it in for an estimate. Canon tells me it might be a bent pin in the card compartment. Hells bells, the darned CF card only goes in one way, and it's a snug fit. <br /> I've never heard of this problem with SD cards. The 6D is quieter, lighter, and returns a cleaner higher ISO image (so I'm told). I would not hesitate to buy a 6D. Based on my experience, I wouldn't recommend the 5D2.</p>

<p>I just read a review (photozone.de) and I am astounded at the specs on your EF-S 10-22. You wouldn't even see barrel distortion except at the 10mm (15mm equiv) setting. I don't see why you're even considering a different camera or lens. Dan's comments are dead-on.</p>

<p>Keep your 7D. For real estate, you need wide-angle capability. Your EF-S 10-22 should be fine, but, if you shoot and use RAW, invest the in time and modest cost of Lightroom, because barrel distortion at the wider focal lengths might be noticeable and so needs to be corrected. If you do jpg's, the distortion might be corrected in the camera. If you notice a lot of this, frame a little big to allow for the image area lost in distortion correction. For this use, I agree with others here that resolution might not be the prime consideration. </p>

<p>I'd find the 24 and 35 L's too heavy and bulky for carry-around use like travel, although I'd have them if I shot professionally, such as press work or weddings. I like wide-angles, but rarely, if ever, need the super wide apertures of the L's. Would the 24mm f 2.8 IS USM and/or the 35mm f2 IS USM do what you need just as well? </p>