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Pastimes : Digital Photography -- Ignore unavailable to you. Want to Upgrade?

To: Uncle Frank who wrote (15960)	1/11/2007 2:47:21 AM
From: Elsewhere	Respond to of 21647

Thanks all! Camera was D70. Lenses: in the dark I usually start with my fastest one, the 50/1.8. I used it for the first three. For the Reichstag the 50/1.8 wasn't wide enough, I had to employ my widest option, the 18-70 kit lens @ 18 mm. I used f/8 (6 s) with aperture priority which yields about the same resolution as the 17-55/2.8 pro lens. Barrel distortion is a strong 3.5% at 18 mm, I am glad there is PTLens. For the husky team I used the 28/2 AIS (manual focus, manual exposure on the D70). [Brandenburg Gate] I'd like the first one even more if it were rotated 0.2 degrees clockwise. Sorry, but my eye is very sensitive to tilts. Thanks for the close observation. I have become sensitive to tilts, too. I assume you derive your remark from the horizontal lines at the top of the gate. I spent about 10 minutes aligning the verticals of the columns at the left and the right with the grid lines of PTLens. They look vertical to me now. I chose a position slightly closer to the right edge of the gate to introduce a bit of an asymmetry and tension. As a result the roof ascends a bit from left to the right ("it's not a bug - it's a feature"). But you are right - I should add a take with exact symmetry the next time I am there. Two crucial tools were a new tripod and remote control ML-3. My old tripod was stable enough but the new one has a bag so that it's easier to carry. I picked it up for $20 new at eBay. Similarly I already had a remote control. Some time ago I posted about adapting a universal RC to the D70. But it's too big. The advantage of the ML-3 is that it fits into a little bag attached to the camera strap so that it's always available. Family walks are still a bit demanding. I carried the camera bag, the tripod and had to push the buggy with Linus. But "something is better than nothing." One or two years ago even such a walk would have been impossible.

To: Uncle Frank who wrote (15960)	1/11/2007 5:58:02 AM
From: Elsewhere	Read Replies (3) \| Respond to of 21647

I'd like the first one even more if it were rotated 0.2 degrees clockwise. I have reprocessed the Brandenburg Gate image and created a special Uncle Frank edition: For the very first time I have applied the horizontal shift function of PTLens to ensure that the point of view of the camera is perpendicular to the front plane of the gate. In other words: PTLens has "pushed back" the right part of the image a bit, the roof horizontals are now parallel to the image border. This operation introduces a slight optical error as there is no 3D information in the image and some details can still be seen which wouldn't be visible after a physical position change. To illustrate the performance of the 50/1.8 here's a 100% crop: