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Pune/ India, Irvine/ CA, now Boulder/ CO
Welcome to my blog! I'm Hrishi from Pune, India. I am an earth system scientist currently working as a postdoctoral research associate at Colorado Center for Astrodynamics Research at CU-Boulder. These blogs are mostly about my travels, landscape photography, scientific computing, book and film reviews, fitness, cooking, and science communication. Feel free to navigate based on the labels below. My website: hrishikeshac.wix.com/hchandan


Saturday, June 28, 2008

Super Macro Takumar 50/4 I Field Experience

The manual focusing is silky smooth. As the focusing ring rotates a great deal for even a minute change in focus, it gives the operator full control over focus point. There is a pin on the left side of the lens which enables the lens to get stopped down from wide open to the aperture selected in the aperture ring. This lens gives magnification of 1:2. i.e half life size. Still, with the help of my 25mm extension tube and 2 x Teleconverter, I can go beyond life size. I haven't tried the combinations on the field yet. A brief exposure test made me realise that the lens exposes properly only wide open and tends to progressively under expose at smaller apertures. However I found out that at f/16 with built in flash and camera on M or Av mode and ISO 100 gives me correct exposure every time. I prefer the Av mode because I don't have to press the Green button before every exposure. Also, In the M mode, the meter doesn't read the flash and gives exposure without considering that the flash is on. e.g. Sometimes it gives 3sec exposure which even with the flash fired thus producing blurred image. Keeping the camera in Av mode exposes every shot ( with flash fired) at 1/180.

The technique I followed while taking photos is as follows-

1. Keep the lens at its minimum focusing distance and at f16, built in flash popped up and at +1 of its intensity. Keep 'the stop down pin' down so that the lens is wide open and thus easier to focus.

2. Go close to the subject so that the desired area is in sharp focus.
3. Pull the stop down pin up so that the lens get stopped down at f16 and click the shutter release button immediately. This technique has enabled me to take few very good shots which I could have only dreamt of taking with my non macro lenses.

Though due to lack of money I wont buy this lens, I certainly recommend it! However please consider its limitations which I mentioned.
All the photos posted here are totally unedited except for the border, resizing, small cropping and the copyright.

I would like to mention that the views written in this blog are based on tests which I conducted and other's tests may yield (dunno how!) different results.

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