A tale of two lenses.

Being separated is not all that bad.

I had posted before about lens element separation, so I thought I would follow up with real life effect of this. I was fortunate enough to get a hold of another lens that has no lens separation, so I thought I would take some picture using them.

twin_lenses

Both are Minolta Chiyoko Super Rokkor 45mm f/2.8 LTM lenses. The one on the right shows separation of the front element group by the foggy outer ring.

Lets see how usable the lens is … using my Sony NEX-6, APS-C 16Mpixel @ 400ISO.

Wide open at f/2.8 … SOOC. The sun is in front of the camera. No lens hood.

sep_orig

Notice that there is a drop in contrast as there is a lot of internal light reflection, and a slight drop in sharpness.

no_sep

The shot with the good lens looks … good.

I took the first image and used the dehazing tool in Lightroom

sep_correct

Hmm, not bad … some sharpness is still obtainable in the centre … this is a 100% crop

sep_crop

I did take some shots with the lens stopped down to f/16 … I didn’t bother to show examples as the images appeared too similar, just take my word for it.

Soooo, if you have just outer separation you could use the lens for that slightly soft portrait imagery that many people replicate using digital post processing plugins/filters … well you can be the judge of that.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.