I have an AF-S Nikkor 18-105mm f/3.5-5.6G ED lens with my Nikon D90. Do I need a converter to wide angle photography ?
No, you don’t need a converter. You probably need a different type of lens depending on what you define as "wide". 18mm with your crop-sensor Nikon equals 24mm on full frame, which is already in the space called Wide Angle.
However you might be thinking of Ultra Wide Angle, where you can get significant distortion on your subjects. For example like this
For Nikon crop sensor cameras you have some relatively inexpensive options such as:
- Sigma 10-20mm (15-30mm Full Frame equivalent)
- Tamron 10-24mm (15-36mm Full Frame equivalent)
- Tokina 11-16mm (16.5-24mm Full Frame equivalent
This is not a comprehensive list and many other options may be available. Number 1 and 2 should both autofocus on your Nikon camera, number 3 needs to be a specific version (Pro DX II) for AF to work with your camera.
Your 18-105mm lens on an apsc d90 is equivalent to 27-157mm on a ff sensor Normal or standard is 43.26mm So the range is often referred to as 35-60mm is normal or standard
Telephoto is longer focal lengths so 61-600
Wide is consider under 35 so 15-35mm
Fisheye is a warped image and it can be from 5-20mm but a square will now look like a barrel
Ultra wide is considered as wider than 22mm So 14-22 ultra wide 23-35 wide 35-60 std 60-600 tele
Zoom mens lens zooms in/out to various lengths Your lens covers; 27-35 wide 35-60 std 61-157 tele
“Wide” is what you think I feel wide is 20mm Other people dont like wider than 28mm Its a feeling. Like what is fat or skinny
Aside from buying a lens wider than 18mm (A lower number) like 10-22 (equiv 15-33)
You can shoot a panorama (cellphones do thiis well) You can move closer, it makes things LOOK wider You can STITCH together many pics You can buy a cheaper converter lens to screw on.
There are two groups to third party lenses The classics Sigma Tamron Tokina New new comers Rokinon etc The newer ones are cheaper and often manual focus The classics cost more but have Autofocus IF you buy a 12mm non fish eye lens Most things will be in focus. (Wider lenses have more depth of field). You can probably enjoy and get great photos with the manual focus.
The question is,, HOW wide do you want? Then you can get a more precise snswer. IF the add on wide angle converter will fo enough Or if you need a zoom or which fixed focal length prime you want 8mm 12mm 16mm (12mm 18mm 24mm equivs)
I hope this helps