Pentax 50mm, f1.4 adapted to Canon dSLR, 5 images w/2 crops/ bandwidth alert.

ziggy53

I finally got a lens shade/hood for this lens and my middle child, Whitney, asked me to go with her to Illinois State University for an Open House.

We got there early, and I had about 20 minutes for taking photos. I used the Pentax 50mm exclusively at f5.6 and using the focus confirmation chip on the adapter.

Just a few snaps. Overcast with no distinct shadows. ISO 800 because I was testing for sharpness.











And a couple of full-resolution crops:





Notes:

A very low contrast day, so moderate USM applied. Sharpness at f5.6 is very good to excellent across the frame. All shots outdoors were in focus, even though I relied on the focus confirmation instead of usual manual focus technique.

I am enough impressed that this lens has replaced the Canon 50mm, f1.8, MKII (plastic) in my standard kit.

Thanks,

ziggy53

Red Bull

Wow! That's pretty darn sharp. I might have to pick up one of these myself! (and an adapter)

Manfr3d

Looks like a real honey pot for sharpness fetichists!

Sewerman

adaptor
Looks very sharp to me.
What type of adapter did you use and which pentax lens did it fit

erich6

Razor sharp!

Erich

gus

Ziggy i have found this post from your redirect. I have a 30D...can i get an older canon or nikon to sit on the 30D at about 11 or 12 mm ?

I sold my 10-22 canon & i have discovered that i miss the wide just too much & really just want a prime of about 12mm.

Sorry to put you on the spot with an odd question but if anyone is going to know then its you.

ziggy53

gus wrote:

Ziggy i have found this post from your redirect. I have a 30D...can i get an older canon or nikon to sit on the 30D at about 11 or 12 mm ?

I sold my 10-22 canon & i have discovered that i miss the wide just too much & really just want a prime of about 12mm.

Sorry to put you on the spot with an odd question but if anyone is going to know then its you.

Gus,

Sorry to take so long to reply,

I am not aware of any prime rectilinear lenses for SLRs or dSLRs in the 12mm range. Nikon made some OK 15mm primes, Canon still makes a 14mm "L" lens (pricey).

The Sigma 10-20mm, f4-5.6 EX DC, seems optimized for the wider end, so it might be more suitable for your applications.

The other method, and the one I'm trying to make work, is to "stitch" multiple images together, to attain the same field of view as a single image provides. The primary advantage is that you can attain more detail, effectively more resolution, which I believe is essential in a vista landscape. It's not easy to do, and I'm still experimenting with the methods available.

This is basically the same approach Max Lyons is using, with spectacular results:

http://www.tawbaware.com/maxlyons/gigapixel.htm
http://www.tawbaware.com/maxlyons/index.html

ziggy53

USAIR

Sewerman wrote:

Looks very sharp to me.
What type of adapter did you use and which pentax lens did it fit

Fred

ziggy53

Sewerman wrote:

Looks very sharp to me.
What type of adapter did you use and which pentax lens did it fit

Yes Fred, I missed another one. rolleyes

The lens is a Pentax screwmount, 50mm, f1.4, SMC.

The adapter is an Adorama screwmount/M42 to EOS.

http://www.adorama.com/CZPUEOS.html?searchinfo=m42%20adapter%20eos&item_no=21

The adapter had a focus confirmation chip attached, per this thread:

http://www.dgrin.com/showthread.php?t=35188

ziggy53