London/UK - Looking for more lenses to test

feronovak · 06-12-2007, 05:22 PM

Hello guys (and girls),

I have been reading so many discussion regarding 18-5mm vs 16-45mm vs sigma 17-70mm that I have decided to do serious lenses shootout.

I have got these lenses already:

Pentax 16-45mm f4
Pentax 18-55mm f3.5-5.6
Sigma 17-70mm f2.8-4
(might use flektogon as well)

What I am looking for is:

Sigma 18-50mm f2.8
Sigma 18-125mm
Tamron 18-250mm

Ideally I am looking for someone who would be able and willing to borrow me these lenses for one weekend (late june, early july?). I am honest person and I dont have need to cheat or be unfair, few people already know me from dpreview (dsowner, over 1100 posts).

Why? I would like to build database of same pictures made by different lenses in exactly same conditions. That means the more lenses I have for one shootout the better. Tests will include sharpnes, distortion, CA, flare, colour cast.

Some of you might say that we dont need new measurbators but I disagree. I prefer taking pictures instead measubarting but this would help new Pentaxians tremendously. I also plan to compare long zooms like 50-200mm, Sigma 70-300 (those I have already).

Than you for your help. Any other ideas are more then welcome.

Fero

feronovak · 06-13-2007, 01:20 AM

Bumb for Londoners/UK Pentaxians (wrote it after midnight yesterday)

feronovak · 06-13-2007, 08:11 AM

Sorry didnt realized it was wrong forum

carpents · 06-13-2007, 08:06 PM

Originally posted by feronovak

Some of you might say that we dont need new measurbators but I disagree. I prefer taking pictures instead measubarting but this would help new Pentaxians tremendously. I also plan to compare long zooms like 50-200mm, Sigma 70-300 (those I have already).

Hi Fero!

You and I have the same idea. I think it is a good one, and I hope you can find some of the lenses you'd like to test. (I don't have any zooms, sorry!)

(See https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/8318-lens-test...-any-good.html)

--Sean

06-12-2007, 05:22 PM	#1
feronovak Senior Member Join Date: Apr 2007 Location: London, UK Photos: Gallery Posts: 123	London/UK - Looking for more lenses to test Hello guys (and girls), I have been reading so many discussion regarding 18-5mm vs 16-45mm vs sigma 17-70mm that I have decided to do serious lenses shootout. I have got these lenses already: Pentax 16-45mm f4 Pentax 18-55mm f3.5-5.6 Sigma 17-70mm f2.8-4 (might use flektogon as well) What I am looking for is: Sigma 18-50mm f2.8 Sigma 18-125mm Tamron 18-250mm Ideally I am looking for someone who would be able and willing to borrow me these lenses for one weekend (late june, early july?). I am honest person and I dont have need to cheat or be unfair, few people already know me from dpreview (dsowner, over 1100 posts). Why? I would like to build database of same pictures made by different lenses in exactly same conditions. That means the more lenses I have for one shootout the better. Tests will include sharpnes, distortion, CA, flare, colour cast. Some of you might say that we dont need new measurbators but I disagree. I prefer taking pictures instead measubarting but this would help new Pentaxians tremendously. I also plan to compare long zooms like 50-200mm, Sigma 70-300 (those I have already). Than you for your help. Any other ideas are more then welcome. Fero

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06-13-2007, 01:20 AM	#2
feronovak Senior Member Join Date: Apr 2007 Location: London, UK Photos: Gallery Posts: 123 Original Poster	Bumb for Londoners/UK Pentaxians (wrote it after midnight yesterday)

06-13-2007, 08:11 AM	#3
feronovak Senior Member Join Date: Apr 2007 Location: London, UK Photos: Gallery Posts: 123 Original Poster	Sorry didnt realized it was wrong forum

06-13-2007, 08:06 PM	#4
carpents Veteran Member Join Date: Sep 2006 Location: West Chester, PA Photos: Gallery \| Albums Posts: 1,420	Originally posted by feronovak Some of you might say that we dont need new measurbators but I disagree. I prefer taking pictures instead measubarting but this would help new Pentaxians tremendously. I also plan to compare long zooms like 50-200mm, Sigma 70-300 (those I have already). Hi Fero! You and I have the same idea. I think it is a good one, and I hope you can find some of the lenses you'd like to test. (I don't have any zooms, sorry!) (See https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/8318-lens-test...-any-good.html) --Sean