June 25, 2018, 04:47:07 AM

Author Topic: SL2  (Read 2816 times)

Mt Spokane Photography

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« on: August 30, 2017, 08:15:06 PM »
I bought a old Sigma 600mm Mirror lens today from a Craigslist seller for $75 and mounted it to my SL2 just to see how bad the images were with a high MP body.  First I tried hand holding at 1000 sec.  No Go, blurry images.  So I drug out my big heavy tripod with geared head and put it on my back porch.  The top of Mt Spokane was totally hidden by smoke, so I focused on my garden a few hundred feet away.

I did not expect much, and I was rewarded.  The wind was blowing enough to make it difficult.  At ISO 2000, the sensor noise was starkly apparent, so I dropped the shutter speed down to 1/125.  Slight blurring looked better than noise or the image with NR.

For a manual lens, I set it to Tv with auto ISO and -2/3 stop correction. 

This made the image come out at 1/125 sec ISO 100.  The lens is fixed at f/8.  Sounds like the old rule of 8 eh.

I really liked the swivel LCD, I could touch the spot I wanted to view at 1X, 5X or 10X and manually focus on that spot.  I should have set a shutter delay, but with the wind blowing, it likely did not matter.

In any event, here it is.  I did adjust lighting, sharpness, etc of the image to my taste.  The focus was on the corn silk.  It actually looked better than I expected, the old lens is certainly not up to the digital age, but I could not argue with the price.

I was surprised by the shallow depth of field

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« on: August 30, 2017, 08:15:06 PM »