Log in

View Full Version here: : Playing around with an old lens


rogerg
17-07-2007, 11:52 PM
G'day all,

Took this shot (shots) on Saturday night. Nice night, very good viewing conditions.

I was playing around with my old pentax Asahi lens on my 350D, seeing what kind of results it would produce. It produced perfect images on my Pentax SP1000 with film. I remembered from these shots that I used to stop it down to F/4. Next time I will do that, and it should remove most or all of the distortion visible in this image.

Overall this isn't a spectacular or ground breaking image, in fact the edge 1/3 is very badly distorted. But they can't all be perfect.

There's a 1mb version here at my website (http://www.rogergroom.com/rogergroom/esh_rog_item.jsp?Item=617&ParentNodeId=16).

Pretty amazing what you can get with 60 second subs. Would've been a really nice image doing F/4, 400ASA and 180s exposures.

Roger.

iceman
18-07-2007, 01:52 AM
Wow, that's beautiful Roger.

Is that a mosaic? What's the focal length of the lens?

RB
18-07-2007, 02:18 AM
That's lovely Roger !

erick
18-07-2007, 10:10 AM
Details on Roger's site, Mike:-

Pentax Asahi 55mm, F/2

The Milky Way, 2 frame composite.

5 x 60s + 6 x 60s composite @ 800ASA

ving
18-07-2007, 10:13 AM
nice one roger :)

rogerg
18-07-2007, 10:40 AM
Sorry Mike, I didn't think to put the details in the post ... but yeah, what erik said :)

h0ughy
18-07-2007, 11:00 AM
awesome result!

Garyh
18-07-2007, 12:37 PM
Very nice Roger!!! I like it!!
That pentax lense looks like a keeper!!!
cheers