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08/07/2004 08:29:01 PM · #1 |
Check out my pics with the new lens. I'm still a little shaky, but I'm already facinated with it.
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08/07/2004 08:59:54 PM · #2 |
| Great stuff. I recently bought the same lens but had to send it in to Canon (it was backfocussing). |
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08/07/2004 09:08:27 PM · #3 |
| Very crisp shots Bruce but they do appear a little noisy, any chance of settings? And, I know you love the Oly C740 (I have a 730) but you still have it as your main cam. |
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08/07/2004 09:11:41 PM · #4 |
These look nice, but my estimation is that they are crops from the originals due to the noise level in the out of focus background possibly. When evaluating a lens, a cropped image doesn't tell the story unless you are looking at the quality of a 100% crop. You may want to post the originals to get better feedback on the quality of the lens :)
These are nice though... I like to watch the birds that visit my feeders :) These look common to my area also...
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08/07/2004 09:27:12 PM · #5 |
Originally posted by hopper:
Great stuff. I recently bought the same lens but had to send it in to Canon (it was backfocussing). |
What does 'backfocusing' mean? |
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08/07/2004 11:59:41 PM · #6 |
Back and front focusing anomolies are where the lens appears to find its focus point just in front of or just behind the intended focus point. It's actually difficult to detect, but it can be an issue on close range shallow depth of field photos.
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08/08/2004 12:50:47 AM · #7 |
Originally posted by jmsetzler:
Back and front focusing anomolies are where the lens appears to find its focus point just in front of or just behind the intended focus point. It's actually difficult to detect, but it can be an issue on close range shallow depth of field photos. |
I sometimes wonder if this is happening to me... is there any kind of test for this that we can do to prove it?
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08/08/2004 01:09:09 AM · #8 |
Originally posted by dwterry:
I sometimes wonder if this is happening to me... is there any kind of test for this that we can do to prove it? |
Do you focus and then re-compose? If so, that is a major source of focus issues. |
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08/08/2004 08:03:46 AM · #9 |
Here are the originals that were reduced in size but not cropped. The shutter speed was 1/1600, aperture was F5.0, and ISO 400. I was shooting from inside a dark shed if that makes a difference. I also had the Rebel in Sport mode and at times the AF was very active. Thanks for the feedback so far. I'm try to transition from P&S to DSLR, but I'm having withdrawal anxiety with my Oly sitting on the shelf.
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08/08/2004 08:19:38 AM · #10 |
Focus Testing
Originally posted by dwterry:
Originally posted by jmsetzler:
Back and front focusing anomolies are where the lens appears to find its focus point just in front of or just behind the intended focus point. It's actually difficult to detect, but it can be an issue on close range shallow depth of field photos. |
I sometimes wonder if this is happening to me... is there any kind of test for this that we can do to prove it? |
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08/08/2004 09:51:38 AM · #11 |
I just got this lens also. On my first shots, it impressed me.
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08/08/2004 09:58:57 AM · #12 |
Thanks for the link! I just browsed the site and plan to give it a try. Even if it doesn't show anything wrong, it would make me feel better. :-)
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08/08/2004 10:08:35 AM · #13 |
A more accurate focus test chart is available here with more detailed instructions here.
The key being that you want the chart at a 45-degree angle to allow for DOF, but you want the actual focus target parallel to the camera. So you want to "cut out" the actual focus target. The "official" Canon focus testing setup is constructed like this.
Also, David, you didn't answer my question about whether or not you focus-lock and then re-compose your shot. If you do this, you are likely to have focus issues.
Message edited by author 2004-08-08 10:11:43. |
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08/08/2004 10:47:29 AM · #14 |
My favorite lens as well. I was amazed the sharpness.
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08/08/2004 11:01:04 AM · #15 |
Great shots! Did you use the same lens on the dragon fly also? If so I'd like to know the settings. Beautiful shot. Here is one I just snapped at work. Good thing I'm on the WIldlife Habitat Committee and have to document the flora and fauna.]
[quote=scalvert] My favorite lens as well. I was amazed the sharpness.
[/quote |
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08/08/2004 11:12:20 AM · #16 |
Yep- same lens.
Handheld at 200mm. 1/1000 sec, f/4.0, ISO 200, and a -2 exposure bias (oops!) |
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