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Forum: Pentax SLR Lens Discussion
04-03-2010, 03:44 PM
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Ahh, good point. Well, I looked at both the K-x and K-7, but neither of them can record 1080p at 30fps, and one of the few things I do occasionally get paid for is video coverage of first flights and other important aviation events out here in Seattle, so a good smooth movie mode is pretty key. I thought about waiting for the next generation of either of those cameras, because surely Pentax will give them 1080p, but that's likely more than a year off. Then, of course, there's image quality. Some of this comes down to personal preference of course, but in side by side comparisons, I felt that the t2i was pretty darn close to perfect (in my opinion), while both the K-7 and K-x seemed a little soft (comparisons are here: Imaging Resource "Comparometer" ™ Digital Camera Image Comparison Page)
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Forum: Pentax SLR Lens Discussion
04-03-2010, 02:23 PM
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Well, budget for one thing, my lens budget is about $200 (yes, I know, sounds stupid, but I plan on getting a better lens next year, just gotta make due for THIS year). I can find this Pentax lens for under $100 pretty easy.
The other reason I don't go with a Canon 70-200 is that that's a pretty short lens for airshows. I'm used to shooting with a 520mm (53mm equivalent) right now, and I'd like to stay in that range. That pentax lens on the t2i will give me about 480mm (35mm equivalent) which is close enough.
I understand that I'll have no IS or AF, and no control of the aperture or focus through the camera itself. So basically... it'll be like the camera I grew up with, an old Pentax all-manual 35mm SLR. I also understand that I'll need to get in a lot of practice with the lens/camera combination, so that I can focus track and get shots quickly when I have to. I'm willing to put in the "work" ;)
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Forum: Pentax SLR Lens Discussion
04-03-2010, 02:00 PM
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Not the most helpful response, I'm not sure how to interpret it. Do you believe I will have trouble keeping the lens in focus throughout the day?
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Forum: Pentax SLR Lens Discussion
04-03-2010, 09:21 AM
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Briefly, I'm on a shoestring budget, but I really want to start shooting with a DSLR. My primary use for a camera is aviation photography, be it 787s taking off and landing out here in Seattle or warbirds at EAA AirVenture, so the vast majority of my subjects are distant (1/8 mile to 1/2 mile) and fast-moving (60mph to 500mph), but well-lit in a sunny sky. I shoot about equal parts photos and videos.
I'm looking at getting a Canon T2i body and kit lens for general shooting, and then using the old Pentax SMC 100-300mm f4.7-5.8 (silver) (Pentax Lens Review and Specification Database - 100-300mm F4.7-5.8) lens via an adapter with AF confirmation circuitry as my "airshow lens". I like that it is lightweight, but even more I like that the majority of owners say it is extremely sharp, especially on an APS-C sized camera. I'm a little worried that squeezing 18 megapixels out of it might soften it up a bit, but I can always shrink/sharpen the photos.
So my primary question is this: Do you think I will have any trouble with this lens/body combination at an airshow? I'm assuming that in the morning I'll be able to zoom in to 300mm or so, set the aperture wide open, focus on infinity, stop down the aperture for the lighting conditions, set the camera in Av mode, and then just be able to shoot airplanes, without having to constantly refocus (aside from some minor tweaks now and then)?
The action at an airshow can get fast and furious, so if I would need to open up the aperture, refocus, close down the aperture, and then shoot each time my subject changes, then that would pretty much be a deal breaker. Likely/unlikely?
Thanks very much for your help :)
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