canon digital camera xt image
bigmaninja
I have a Canon XT (8 mp) Rebel digital camera. It has the 18-55 mm lens that came with it. I need to know the equivalent of a 50mm (35mm camera) setting for my lens. I guess what I'm trying to ask is this: I need to use the digital equivalent of the 35mm format 50 mm lens. I know the 50mm setting on the digital is not the same as the 50mm on a 35mm film camera. Any advice?
Answer
Your camera has a 1.6 crop factor sensor. Your lens set to 30mm will give you the equivalent of 48mm on a 35mm format film SLR.
steve
Your camera has a 1.6 crop factor sensor. Your lens set to 30mm will give you the equivalent of 48mm on a 35mm format film SLR.
steve
Astrophotography, what telescopes are compatible with Canon Digital Rebel XT?
Aphrodite
I have a Canon Digital Rebel XT and am wanting to start astrophotography.
I am not good with crazy terms, but need to know a good telescope to use.
Anyone know of a few I can check out?
Answer
Well, ..., IT's not just the scope that you should be worried about bur rather the mount. In astrophotography the mount is the most important thing you should consider. Also, you're not going to get an astrophotgraphy "ready" scope for under $1000 USD that's all there is to it. The Orion-EQ computerized goto mount is one of the the cheapest goto mounts that I've seen (http://www.telescope.com/Mounts-Tripods/Equatorial-Mounts-Tripods/Orion-Atlas-EQ-G-Computerized-GoTo-Telescope-Mount/pc/-1/c/2/sc/34/p/24338.uts). That's just the mount and does not include the OTA (Optical Tube Assembly) which could run you another $1000 or so (depending on what you want to do, of course).
If you're looking for an Schimidt-Cassegrain Telescope (SCT), then starting price is $2,599 and that doesn't include the equatorial wedge. So you really need to be thinking as follows:
1) 8" Goto Fork Mounted SCT: 2,599.00: http://www.optcorp.com/product.aspx?pid=1-600-603-979-12961&kw=&st=0
2) Equatorial Wedge: 179.00: http://www.optcorp.com/productList.aspx
3) Deep Sky Imaging Camera with Filter Wheel and autoguider: $1389.85: http://www.telescope.com/control/astrophotography/astrophotography-cameras/orion-starshoot-planetary-imager-and-autoguider. (You already have the cannon rebel XT tis a great astrophotgraphy camera out of the box)
4) 4 Astrophotography filters: 205.95: http://www.telescope.com/control/accessories/telescope-and-eyepiece-filters/1*25-inch-lrgb-astrophotography-telescope-eyepiece-filter-set
So adding it up: 2,599.00 + 179.00 + 1389.85 + 205.95 = $4373.80 * 7.5 tax = ~$4701.84.
So it takes a little dough to get started but it's do able. You might want to consider getting into the visual end of astronomy first and then work your way up to astrophotography. BTW, the prices I've given, though actual, may be less if you already have some of the items so in your case it could be less. Especially since you already own a DLSR, then you don't need to invest in an astronomy camera and will only need an autoguider which on runs about $385 (depending on which one you buy).
You might also want to pick up a copy of one of Robert Reeve's books "Astrophotography for Webcams" or "Astrophotography for DSLR's". His books are full of great tips on how to be successful at astrophotogrpahy.
Watch the following video for specifications on 10" Meade LX200 with an equatorial wedge:
Well, ..., IT's not just the scope that you should be worried about bur rather the mount. In astrophotography the mount is the most important thing you should consider. Also, you're not going to get an astrophotgraphy "ready" scope for under $1000 USD that's all there is to it. The Orion-EQ computerized goto mount is one of the the cheapest goto mounts that I've seen (http://www.telescope.com/Mounts-Tripods/Equatorial-Mounts-Tripods/Orion-Atlas-EQ-G-Computerized-GoTo-Telescope-Mount/pc/-1/c/2/sc/34/p/24338.uts). That's just the mount and does not include the OTA (Optical Tube Assembly) which could run you another $1000 or so (depending on what you want to do, of course).
If you're looking for an Schimidt-Cassegrain Telescope (SCT), then starting price is $2,599 and that doesn't include the equatorial wedge. So you really need to be thinking as follows:
1) 8" Goto Fork Mounted SCT: 2,599.00: http://www.optcorp.com/product.aspx?pid=1-600-603-979-12961&kw=&st=0
2) Equatorial Wedge: 179.00: http://www.optcorp.com/productList.aspx
3) Deep Sky Imaging Camera with Filter Wheel and autoguider: $1389.85: http://www.telescope.com/control/astrophotography/astrophotography-cameras/orion-starshoot-planetary-imager-and-autoguider. (You already have the cannon rebel XT tis a great astrophotgraphy camera out of the box)
4) 4 Astrophotography filters: 205.95: http://www.telescope.com/control/accessories/telescope-and-eyepiece-filters/1*25-inch-lrgb-astrophotography-telescope-eyepiece-filter-set
So adding it up: 2,599.00 + 179.00 + 1389.85 + 205.95 = $4373.80 * 7.5 tax = ~$4701.84.
So it takes a little dough to get started but it's do able. You might want to consider getting into the visual end of astronomy first and then work your way up to astrophotography. BTW, the prices I've given, though actual, may be less if you already have some of the items so in your case it could be less. Especially since you already own a DLSR, then you don't need to invest in an astronomy camera and will only need an autoguider which on runs about $385 (depending on which one you buy).
You might also want to pick up a copy of one of Robert Reeve's books "Astrophotography for Webcams" or "Astrophotography for DSLR's". His books are full of great tips on how to be successful at astrophotogrpahy.
Watch the following video for specifications on 10" Meade LX200 with an equatorial wedge:
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