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wide - can help me?
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PostPosted: Mon Feb 16, 2009 3:55 pm    Post subject: wide - can help me? Reply with quote

i'm finding a M42 wide lens for an aps-c digital camera (pentax).

suggestions?

russian lens? germany lens? japan lens? others?

(of course a lens wider than 25mm)


Last edited by iridium on Mon Feb 16, 2009 4:04 pm; edited 1 time in total


PostPosted: Mon Feb 16, 2009 4:02 pm    Post subject: Reply with quote

What is your budget?


PostPosted: Mon Feb 16, 2009 4:09 pm    Post subject: Reply with quote

if i find an interesting lens, i can put more money Smile

...but not expensive: max 100-200 euro is my budget


PostPosted: Mon Feb 16, 2009 4:29 pm    Post subject: Reply with quote

The M42 lenses were designed for full frame where 35mm is a good wide angle, so 24mm is already pretty extreme. The ultra wide angle lenses, such as the 20mm Zeiss Flektogon tend to be quite expensive - around the top of your range - and are not very common.


PostPosted: Mon Feb 16, 2009 4:33 pm    Post subject: Reply with quote

iridium wrote:
if i find an interesting lens, i can put more money Smile

...but not expensive: max 100-200 euro is my budget




You have many choices in that range, many really good lenses there.


Next and maybe the most important, How wide?

Check the pics from various focal lengths form 28mm to 14mm.
Plenty to chose from.

It's all compromise; There will be no "perfect" lens but many truly good ones.


PostPosted: Mon Feb 16, 2009 4:43 pm    Post subject: Reply with quote

Iridium,

Just wait for a little while, Pentax is testing new 20mm wide lens
for their dSLR line of cameras. This is not rumor..... Cool

Uh, Oh. That was not 20mm, 15mm. Sorry. see>

http://nedbunnell.blogspot.com/2009/02/harry-pelican.html


PostPosted: Mon Feb 16, 2009 4:53 pm    Post subject: Reply with quote

I have a flektogon 20/4 and I'm happy with it.

Rino.


PostPosted: Mon Feb 16, 2009 4:57 pm    Post subject: Reply with quote

Maybe a Tamron 17/3.5 ? I'm using one in M42 mount both digital and film, not very sharp wide opened but correct when stopped Smile


PostPosted: Mon Feb 16, 2009 5:09 pm    Post subject: Reply with quote

For this sum I also suggest Tamron SP 17mm or Flektogon 4/20.


PostPosted: Mon Feb 16, 2009 5:27 pm    Post subject: Reply with quote

crop frame will make 20mm closer to 32mm for a real wide maybe a 16mm zenitar which will be closer to 25mm


PostPosted: Mon Feb 16, 2009 6:00 pm    Post subject: Reply with quote

hacksawbob wrote:
crop frame will make 20mm closer to 32mm for a real wide maybe a 16mm zenitar which will be closer to 25mm


Being a fish-eye, even wider: something like a 21-22mm.


PostPosted: Mon Feb 16, 2009 6:04 pm    Post subject: Reply with quote

thanks for your info!

i know that the m42 wide are expensive and rare.

please give me info about "name lens" (flektogon...) so i can then find photos. and if you have experiences, tell me Wink


PostPosted: Mon Feb 16, 2009 6:44 pm    Post subject: Reply with quote

Zenitar 16mm. Famous lens!


PostPosted: Tue Feb 17, 2009 8:22 am    Post subject: Reply with quote

horvlas wrote:
Zenitar 16mm. Famous lens!


And it's natively available in K mount - I don't know if it's an auto lens or not though. In M42, it has a pin, so it's auto. I heard it has some automatic features with Nikon mount as well.


PostPosted: Tue Feb 17, 2009 11:54 am    Post subject: Reply with quote

horvlas wrote:
Zenitar 16mm. Famous lens!


i know very well zenitar.
very good at f5.

but i'm finding not a fish eye.

other opinions?
russian lenses?


PostPosted: Tue Feb 17, 2009 12:33 pm    Post subject: Reply with quote

The Mir 20M can be interesting. I have one. It's not so sharp, and is big and heavy, but sometimes (especially when shooting at high ISO) gives good images, with a nice flavour.


PostPosted: Tue Feb 17, 2009 1:32 pm    Post subject: Reply with quote

I don't use this lens. I saw nice pics with it. I have a flektagon 20/4, somebody tell that isn't a good lens (so unsharp at borders and not so sharp at center, etc), but it's good for me with almost 0 distortion.

Show us your pics!! Thanks.

Rino.


PostPosted: Tue Feb 17, 2009 1:38 pm    Post subject: Reply with quote

What's the difference between MIR-20, MIR-47 and MIR-64? Any experience?


PostPosted: Tue Feb 17, 2009 7:07 pm    Post subject: Reply with quote

estudleon wrote:
I don't use this lens. I saw nice pics with it. I have a flektagon 20/4, somebody tell that isn't a good lens (so unsharp at borders and not so sharp at center, etc), but it's good for me with almost 0 distortion.

Show us your pics!! Thanks.

Rino.


OK, here's a fresh shot made with the MIR 20M @ f/5.6 on EOS 350D, 400 ISO. Not art, just a casual test shot.
I made just a conversion using a "neutral" profile in RawTherapee, so there's no sharpen applied, no noise reduction, no color boost, no local contast enhancement, only brightness correction.
The first image is reduced for the web in Gimp, so some sharpen is applied. The others are crops of the jpeg created by RawTherapee.



Center crop:



Border crop:



PostPosted: Wed Feb 18, 2009 8:14 am    Post subject: Re: wide - can help me? Reply with quote

iridium wrote:
i'm finding a M42 wide lens for an aps-c digital camera (pentax).

suggestions?

russian lens? germany lens? japan lens? others?

(of course a lens wider than 25mm)


It's quite difficult to find a good lens in this range on a tight budget. You will find many lenses (like the Flektogon 20/4 or Tamron 17/3.5 suggested by others) but most are somewhat lacking unless stopped down to F/8 at least.

In M42 mount, my suggestion is the old Super-Takumar 20/4.5, which is not very fast, but is very well built and offers good image quality on APS-C format. At least this is the case for my sample of this lens. It is somewhat rare but not too expensive because of its limited aperture and also because the borders are rather soft on full frame format. The lens also exists in a multi coated S-M-C-Takumar version, but the difference in image quality is not worth the significant price difference IMHO.

If you need to go wider, you will not have much choice in manual focus except to go for a fisheye lens. Both the Super-Takumar 17/4 and the Zenitar 16/2.8 are very good lenses that can fit your budget. Don't forget that a fisheye lens offers a much wider field of view than a rectilinear lens of the same focal length. There are many software applications than can straighten fisheye images if needed.

Cheers!

Abbazz