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Warm and Cold PENTAX lenses
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PostPosted: Wed Feb 18, 2015 8:29 pm    Post subject: Warm and Cold PENTAX lenses Reply with quote

Hello I am an Canon jpg shooter and I like Pentax lenses but on Canon it's only the 50mm f1.4 (Takumar,M) of the lenses I have tried that have given me the warm colors I like.The 55,100,75-150 and 35-70 f2.8 ar all could.
So my question is if there are other PENTAX lenses that are warm like the M 50mm f1.4


Last edited by Zeeke on Wed Feb 18, 2015 9:03 pm; edited 1 time in total


PostPosted: Wed Feb 18, 2015 8:59 pm    Post subject: Reply with quote

If you are talking about PK mount lenses, then you would be getting mostly neutral effects, i.e., not warm at all.
The Pentax 24mm is quite neutral.

The old Super, SMC and other versions of the old screwmount (M42) Takumar can be very warm indeed because of radiation discoloring the rear element. But this is not true of the rest of the M42 Takumars.

Very warm effects of a more natural sort are common with the old Komura lenses. Most of them are quite warm, "golden" rendering.
I highly recommend the 135/3.5


PostPosted: Wed Feb 18, 2015 11:05 pm    Post subject: Reply with quote

Exactly what he said.

the "warmness" is the coating deteriorating Laughing

Having said that, Auto White balance does a good job at a) getting rid of the yellow when I use old Taks, and b) replicating the yellow Laughing


PostPosted: Wed Feb 18, 2015 11:56 pm    Post subject: Reply with quote

I find that my Minolta Rokkor lenses are far warmer than the Takumars, and I like both. If you like bright reds then the old Pentacon 30 / 3.5 has to be a favourite.


PostPosted: Thu Feb 19, 2015 1:22 am    Post subject: Reply with quote

What I'm saying is that the Pentax M,A,Fa 50mm.f1.4 gives warmer pictures than for example M 50mm f1,7 or K55mm.f1,8 it's seems to be the same way with all models of the Pentax 50mm f1,4 and there for I think it's maybe something in the design of the lens and not the coating this time.
It's the same way with C/Y Planar 50mm f1.4 vs Rollei planar 50mm f1.8 the Rollei with HTF is gives much warmer and nicer pictures I think......


PostPosted: Thu Feb 19, 2015 2:41 am    Post subject: Reply with quote

Ah I see, how interesting. I did not find that to the the case with the M/A/k lenses I had.


PostPosted: Thu Feb 19, 2015 5:55 am    Post subject: Reply with quote

Edited

Last edited by bernhardas on Wed Jun 15, 2016 7:25 am; edited 1 time in total


PostPosted: Thu Feb 19, 2015 9:14 am    Post subject: Reply with quote

Yep, that woudl have been my comment too. Do a manual WB setting and things shoudl be fine.


PostPosted: Thu Feb 19, 2015 9:24 am    Post subject: Reply with quote

Zeeke wrote:
What I'm saying is that the Pentax M,A,Fa 50mm.f1.4 gives warmer pictures than for example M 50mm f1,7 or K55mm.f1,8 it's seems to be the same way with all models of the Pentax 50mm f1,4 and there for I think it's maybe something in the design of the lens and not the coating this time.
It's the same way with C/Y Planar 50mm f1.4 vs Rollei planar 50mm f1.8 the Rollei with HTF is gives much warmer and nicer pictures I think......

Did you test this in a reproducible setting?
Tripod, stable lighting, manual WB ...

Or is it "just a feeling" ...


PostPosted: Thu Feb 19, 2015 10:14 am    Post subject: Reply with quote

Even if you find several "warm" lenses I bet they wouldn't be equally warm, so results are going to be mixed.
You said that you're Canon JPG shooter so I could recommend installing MagicLantern addon to the firmware. It is possible with it (among many many other features) to adjust white balance in 50 or 100K increments + adjusting Green/Magenta, all with LiveView in real-time, so you could adjust warmness you like for every lens without using standard Canon's WB presets.

Maybe it's a little bit off topic as you've asked about Pentax primes, but I found Tamron 17A 35-70 to deliver beautifully warm colour tones.


PostPosted: Thu Feb 19, 2015 10:21 am    Post subject: Reply with quote

I don't understand why a slightly warmer rendition is important when you can adjust the colours ad infinitum in post.


PostPosted: Thu Feb 19, 2015 3:38 pm    Post subject: Reply with quote

iangreenhalgh1 wrote:
I don't understand why a slightly warmer rendition is important when you can adjust the colours ad infinitum in post.


the starting point determines leeway, however...


PostPosted: Thu Feb 19, 2015 5:25 pm    Post subject: Reply with quote

Many color effects are not easily achievable in PP software without a great deal of understanding.
Much easier to take them right off with a lens that gives the desired result.
It would drive me crazy (well, I am always at the edge of insanity, but even so) to try to make a Takumar 135 picture look like a Komura 135 picture.