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View Full Version : How big is 9mm to 14mm? (4 Imgs.)


DavidJ1609
11th November 2009, 03:19 AM
Hi,

Just playing with my new toy yesterday, and wanted to establish for myself how much I have gained in 5mm. I was surprised at how much!

My method was to take the same picture at 14mm, then 9mm. I overlayed the 14mm onto the 9mm in Photoshop. Apart from the 3rd one here, it was almost pixel-perfect. I blended with a colour overlay - so the red you see is in fact the real overlayed 14mm view!

Where I used the tripod and/or kept the camera straight, it was easy. Where the 14mm view meant I had to recompose to get the shot, you will see the overlay perspective change. However, I didn't move my body for these, just recomposed by tilting the camera.

I hope this is useful to someone. I thought it was better than the diagram with many lens comparison lines, as it shows real-world differences in the view I could get between 14mm and 9mm.

More images follow in the next post. Amateur, as ever!
Hand held.
http://i4yypa.bay.livefilestore.com/y1p5NpJCWj1s5wJlwC9Wpah1gay89cJgFTVFDJB6VvnX9T211U xnCp7q9gsC5zhtVm_E4npAjP152CIQNm40eS0TTB7PGaHllcD/9_to_14_Overlay.jpg

Tripod.
http://i4yypa.bay.livefilestore.com/y1p3iDehHGlA4mePYygPxBl3NLAsaYJV_tBX8BfyNKtOhq2MYR l_Sz7MOXSUbYG8YfJglGkopFBTqsGhxnC_HL9hMDwZZsBbg7R/9_to_14_Overlay8.jpg

Hand Held.
http://i4yypa.bay.livefilestore.com/y1pVgi-3cAoxEHK5OSIIriGFwJSqFc3g8nisHt05-2Tfqs9tKJNohA99X8X_1qfiFGCeEscpnfysY-NFNU78PornZkwD8gzjQMS/9_to_14_Overlay9.jpg

Hand Held.
http://i4yypa.bay.livefilestore.com/y1pF0nZZbkG8RSes1LLNL-TRAIlTKLqtv_vuZYYvijBL1g-u1PR0fCsZZNLqHE47a9d_VZxJP6cX9hd1gjNZVBQop1vwSQa7x 0u/9_to_14_Overlay4.jpg

More images follow in the next post.

I hope this is useful for people. :)

DavidJ.

DavidJ1609
11th November 2009, 03:22 AM
I know it' repeating, but some subects are closer, so they do show a difference.

Hand Held.
http://i4yypa.bay.livefilestore.com/y1pRlSTVj9nuEhm39V8Gbqy0SwrVVES1ve_4YpQP9pneg4rHIA wixSbv2QgXKV8FLxmReNEUCIWVml9cHRWyuo-53rYE5VCsdDl/9_to_14_Overlay2.jpg

Tripod.
http://public.bay.livefilestore.com/y1p6vqQVRk8qEwaxJ2NcnocVU_5Ou1VHH0zaLosozOj67jDz-BCO1IHGKrs65n0ZYCM0dNwE1U7JUqN_3M2XoX15Q/9_to_14_Overlay3.jpg

Tripod.
http://public.bay.livefilestore.com/y1pbqsSO7KCpk0pdyXP33XxmwBK1eRcrud3745V0fYpjXGsJ3Z b6evKpBsJM1MDjFgt-HB_3qttjPLTIGelkmXA7g/9_to_14_Overlay5.jpg

Hand held.
http://public.bay.livefilestore.com/y1pL3bq24UwuI0GgoBNyCVftqx8Fv0ryywPMUot-mYkyECGMNxMZfjnCNZN5-_caLabJWcrC265EfesY1c32AQJ9Q/9_to_14_Overlay6.jpg

Hand Held.
http://public.bay.livefilestore.com/y1peeOwUDX_3h0zIZgora67v1kPtwtblxYVDh3_tAc5_rgsoqX mcMVO3yXqJhG2J5XyUiro-H2ra3DM9w7kd3JAsA/9_to_14_Overlay7.jpg

DavidJ.

DavidJ1609
11th November 2009, 03:27 AM
By chance I took a shot with 11mm as well.

9mm to 11mm to 14mm.

http://public.bay.livefilestore.com/y1pg-SQ_EkFsOkqnjGVALWd9c4SCsUOYiJeS_EroZYb8Ku7ghFMA9fW fPJMRk6qc7wOEXTTJrW9U5GGbdOjUIh7Ig/9_to_11_to14_Overlay.jpg

DavidJ.
PS. Feel free to pass the photos on to various sites/use/modify/copy as you see fit. Creative commons (Attribute) licence on these; just refer to "David J. Barber" as the author on any of my images you use.
Cheers.

StephenL
11th November 2009, 07:42 AM
An interesting exercise to see in the flesh, as it were. Thank you. I think it also demonstrates the lack of distortion at 9mm.

Ian
11th November 2009, 09:38 AM
That's a really interesting set of comparisons - thanks for sharing :)

Ian

stevednp3
11th November 2009, 11:56 AM
Thanks very much David, what a great idea, thanks for sharing, as i was looking to purchase a wider lens at some point and this will be a great guide for me and others *chr

DavidJ1609
11th November 2009, 01:29 PM
An interesting exercise to see in the flesh, as it were. Thank you. I think it also demonstrates the lack of distortion at 9mm.

Yes. Rectilinear I think they call it. I was impressed with the lack of distortion also.

I thought the overlay idea was suitable. I could match the actual 14mm picture, even with perspective.

For anyone interested, I copied and pasted the entire 14mm picture over the 9mm as a layer in Photoshop, then opacity 50% allowed me to "transform" the 14mm layer/image to fit exactly over the 9mm. Then, because they become invisible as you match the pixels, I selected a layer blend as colour with low opacity - so the 14mm image is identified easily.

Thanks to all for your comments. It's nice to give a bit back. :)

Now - anyone got a 7-14mm? I think that 2mm also give a lot.

DavidJ.

Crippledsandwich
15th May 2011, 09:27 PM
really helpful mate thanks for sharing

francois
15th May 2011, 09:33 PM
Thanks for sharing, very interesting.

Zuiko
15th May 2011, 10:45 PM
Excellent idea, David, and very well presented. :)

DavidJ1609
16th May 2011, 01:22 AM
Wow! This is an old thread.

I'm glad people find this useful. I always just saw one picture with comparison lines for various focal lengths, and was not really able to judge as too many lines was confusing.

Glad to see others agree this is more of a "real world" visual aid.

David.

Chevvyf1
16th May 2011, 06:59 AM
Thanks very much David, what a great idea, thanks for sharing, as i was looking to purchase a wider lens at some point and this will be a great guide for me and others *chr

Age is not the problem, the facts are still current ! Thanks so much :D I shall buy a 9-11

OlyPaul
16th May 2011, 07:02 AM
A great way to show different angle of views.

An interesting exercise to see in the flesh, as it were. Thank you. I think it also demonstrates the lack of distortion at 9mm.

Not really Stephen I'd prefer to see a image with a straight horrizon in the top third of the picture with no pp to judge distortion, it's the reason I will not change from the 11-22mm to the 12-60mm. :)

catkins
16th May 2011, 11:25 AM
Love the work that's gone into this and the last overlay with the comparison of 3 sizes is the one for me. A simple idea in principle but I can only guess what work has gone into this - thanks!

Regards
Chris

Phill D
17th June 2012, 08:37 AM
It's a real shame that the images have gone from this thread. Any way it can be restored and kept as a technical archive somehow.

DekHog
17th June 2012, 10:12 AM
It's a real shame that the images have gone from this thread.

Yeah, this is a real pet hate of mine, and people using Flickr are normally the biggest offenders where missing images are concerned - I use TinyPic as a dumping ground for forum post images, and never delete anything from it, so all my post images are always available.....

DavidJ1609
17th June 2012, 11:21 AM
I'm the originator of the thread, and they seem to be missing from Skydrive.

I must have accidentally deleted them. I hate that too! :-)

I have a few days at the end of the coming week. I'll repeat the exercise and repost to a permanent server.

David.

DavidJ1609
23rd June 2012, 07:23 AM
New post with new pictures.

http://e-group.uk.net/forum/showthread.php?p=173084#post173084

Regards,

David.